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Profile Name ERBB2 G660R
Gene Variant Detail

ERBB2 G660R (gain of function)

Relevant Treatment Approaches HER inhibitor (Pan) HER2 Inhibitor

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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
ERBB2 L1157R cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited growth of transformed cells expressing ERBB2 (HER2) L1157R in culture (PMID: 32366937). 32366937
ERBB2 L1157R cancer no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L1157R did not demonstrate sensitivity to growth inhibition by Iressa (gefitinib) in culture (PMID: 32366937). 32366937
ERBB2 L1157R cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of transformed cells expressing ERBB2 (HER2) L1157R in culture (PMID: 32366937). 32366937
ERBB2 L1157R cancer no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L1157R did not demonstrate sensitivity to growth inhibition by Tarceva (erlotinib) in culture (PMID: 32366937). 32366937
ERBB2 L1157R cancer sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of transformed cells expressing ERBB2 (HER2) L1157R in culture (PMID: 32366937). 32366937
ERBB2 L1157R cancer sensitive HER2 Inhibitor Pelitinib Preclinical - Cell culture Actionable In a preclinical study, Pelitinib inhibited growth of transformed cells expressing ERBB2 (HER2) L1157R in culture (PMID: 32366937). 32366937
ERBB2 L1157R cancer sensitive HER inhibitor (Pan) Canertinib Preclinical - Cell culture Actionable In a preclinical study, Canertinib (CI-1033) inhibited growth of transformed cells expressing ERBB2 (HER2) L1157R in culture (PMID: 32366937). 32366937
ERBB2 G776delinsVC lung non-small cell carcinoma conflicting HER inhibitor (Pan) Afatinib Clinical Study Actionable In a retrospective analysis, Gilotrif (afatinib) treatment resulted in an objective response rate of 0% (0/3) in non-small cell lung cancer patients harboring ERBB2 (HER2) G776delinsVC (PMID: 30527195). 30527195
ERBB2 G776delinsVC lung non-small cell carcinoma conflicting HER inhibitor (Pan) Afatinib Preclinical - Cell line xenograft Actionable In a preclinical study, Gilotrif (afatinib) inhibited proliferation and induced cell-cycle arrest and apoptosis of a non-small cell lung cancer (NSCLC) cell line harboring ERBB2 (HER2) G776delinsVC in culture and inhibited tumor growth in NSCLC cell line xenografts carrying ERBB2 (HER2) G776delinsVC (PMID: 26545934). 26545934
ERBB2 G776delinsVC lung non-small cell carcinoma no benefit Lapatinib Clinical Study Actionable In a retrospective analysis, Tykerb (lapatinib) treatment resulted in an objective response rate of 0% (0/1) in non-small cell lung cancer patients harboring ERBB2 (HER2) G776delinsVC (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor resistant HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Tarloxotinib (TRLX) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC lung non-small cell carcinoma no benefit HER inhibitor (Pan) Dacomitinib Clinical Study Actionable In a retrospective analysis, Vizimpro (dacomitinib) treatment resulted in an objective response rate of 0% (0/2) in non-small cell lung cancer patients harboring ERBB2 (HER2) G776delinsVC (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor predicted - sensitive Ganetespib Preclinical - Cell culture Actionable In a preclinical study, Ganetespib inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor resistant Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Tykerb (lapatinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC breast cancer sensitive HER inhibitor (Pan) Ado-trastuzumab emtansine + Poziotinib Preclinical - Cell culture Actionable In a preclinical study, addition of Poziotinib (HM781-36B) enhanced growth inhibition by Kadcyla (ado-trastuzumab emtansine) treatment in breast cancer cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Clinical Study Actionable In a retrospective analysis, Poziotinib (HM781-36B) treatment resulted in an objective response rate of 50% (1/2) in non-small cell lung cancer patients harboring ERBB2 (HER2) G776delinsVC (PMID: 30527195). 30527195
ERBB2 G776delinsVC lung non-small cell carcinoma no benefit Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, Kadcyla (ado-trastuzumab emtansine) treatment demonstrated limited efficacy in patients with relapsed non-small cell lung cancer harboring ERBB2 (Her2) mutations, resulting in progressive disease in a patient harboring ERBB2 (HER2) G776delinsVC (PMID: 29313813). 29313813
ERBB2 G776delinsVC lung adenocarcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall responses of partial response in 44% (8/18) and stable disease in 39% (7/18), and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations, and a subset of patients specifically harboring ERBB2 (HER2) G776delinsVC had a 100% (2/2) partial response rate (PMID: 29989854; NCT02675829). 29989854
ERBB2 G776delinsVC lung non-small cell carcinoma no benefit Erlotinib Clinical Study Actionable In a retrospective analysis, Tarceva (erlotinib) treatment resulted in an objective response rate of 0% (0/1) in non-small cell lung cancer patients harboring ERBB2 (HER2) G776delinsVC (PMID: 30527195). 30527195
ERBB2 G776delinsVC lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Case Reports/Case Series Actionable In a Phase II trial, Poziotinib (HM781-36B) treatment resulted in a partial response in one patient and stable disease in another patient with lung adenocarcinoma harboring ERBB2 (HER2) G776delinsVC (PMID: 30149884; NCT02979821). 30149884
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Vizimpro (dacomitinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Gilotrif (afatinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC breast cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited Erbb2 (Her2) phosphorylation and viability of breast cancer cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Nerlynx (neratinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, a patient with non-small cell lung cancer harboring ERBB2 G776delinsVC demonstrated a partial response and an ongoing progression-free survival when treated with Pyrotinib (PMID: 30596880; NCT02535507). 30596880
ERBB2 G776delinsVC Advanced Solid Tumor resistant HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Imbruvica (ibrutinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC lung non-small cell carcinoma resistant Gefitinib Preclinical Actionable In a preclinical study, non-small cell lung cancer cells harboring ERBB2 (HER2) G776delinsVC demonstrated resistance to treatment with Iressa (gefitinib) in culture (PMID: 26545934). 26545934
ERBB2 G776delinsVC Advanced Solid Tumor conflicting Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor conflicting Osimertinib Preclinical - Cell culture Actionable In a preclinical study, Tagrisso (osimertinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor predicted - sensitive Luminespib Preclinical - Cell culture Actionable In a preclinical study, Luminespib (AUY922) inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC lung cancer no benefit Gefitinib Preclinical Actionable In a preclinical study, bronchial epithelial cells expressing ERBB2 (HER2) G776delinsVC did not demonstrate sensitivity to Iressa (gefitinib) in culture (PMID: 26545934). 26545934
ERBB2 G776delinsVC lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Clinical Study - Cohort Actionable In a retrospective study, Gilotrif (afatinib) treatment resulted in an objective response rate (ORR) of 15.6% (5/32) and a disease control rate of 68.8% (22/32) in patients with lung adenocarcinoma harboring ERBB2 (HER2) mutations, patients harboring G776delinsVC (n=5) or G778_P780dup (n=5) achieved longer median progression-free survival (7.6 mo) than those with Y772_A775dup (n=14, 1.2 mo) or missense mutations (n=8, 3.6 mo), with an ORR of 40% (4/10) and a DCR of 100% (10/10) (PMID: 32162827). 32162827
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor conflicting HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Pyrotinib in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor sensitive AZ5104 Preclinical - Cell culture Actionable In a preclinical study, AZ5104 inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC lung non-small cell carcinoma no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 8.5 months in a patient with non-small cell lung cancer harboring ERBB2 (HER2) G776delinsVC (PMID: 29420467; NCT01953926). 29420467
ERBB2 G776delinsVC Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVC Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited growth of a transformed cell line expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 29686424). 29686424
ERBB2 G776delinsVC Advanced Solid Tumor resistant HER2 Inhibitor Tucatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC were resistant to Tukysa (tucatinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC Advanced Solid Tumor decreased response Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC demonstrated decreased response to Tarceva (erlotinib) compared to Poziotinib (HM781-36B) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC lung cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited Erbb2 (Her2) phosphorylation and downstream signaling in bronchial epithelial cells expressing ERBB2 (HER2) G776delinsVC in culture (PMID: 26545934). 26545934
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant HER2 Inhibitor Tucatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Tucatinib (ARRY-380) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor predicted - sensitive Ganetespib Preclinical - Cell culture Actionable In a preclinical study, Ganetespib inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Nerlynx (neratinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Pyrotinib in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Gilotrif (afatinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Tarceva (erlotinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor predicted - sensitive Luminespib Preclinical - Cell culture Actionable In a preclinical study, Luminespib (AUY922) inhibited growth of transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Vizimpro (dacomitinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Tykerb (lapatinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant AZ5104 Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to AZ5104 in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVC and an acquired ERBB2 (HER2) C805S were resistant to Tagrisso (osimertinib) in culture (PMID: 30527195). 30527195
ERBB2 G776delinsVC ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, ERBB2 (HER2) C805S was identified as a secondary mutation in transformed cells expressing ERBB2 (HER2) G776delinsVC that acquired resistance to Poziotinib (HM781-36B) in culture (PMID: 30527195). 30527195
ERBB2 R678Q Advanced Solid Tumor no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R678Q did not benefit from treatment with Tarceva (erlotinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 R678Q Advanced Solid Tumor no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R678Q did not benefit from treatment with Iressa (gefitinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 R678Q endometrial cancer no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 5.5 months in a patient with endometrial cancer harboring ERBB2 (HER2) R678Q (PMID: 29420467; NCT01953926). 29420467
ERBB2 R678Q colorectal cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.6 months in a patient with colorectal cancer harboring ERBB2 (HER2) R678Q (PMID: 29420467; NCT01953926). 29420467
ERBB2 R678Q Advanced Solid Tumor predicted - sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R678Q demonstrated decreased cell proliferation and reduced survival when treated with Gilotrif (afatinib) in culture (PMID: 30449325). 30449325
ERBB2 R678Q cervical cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), a heavily pretreated cervical cancer patient harboring ERBB2 (HER2) R678Q demonstrated stable disease when treated with Nerlynx (neratinib) (PMID: 32723675; NCT01953926). 32723675
ERBB2 R678Q Advanced Solid Tumor predicted - resistant Cetuximab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R678Q demonstrated resistance to treatment with Erbitux (cetuximab) in culture (PMID: 30449325). 30449325
ERBB2 R678Q Advanced Solid Tumor predicted - sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R678Q demonstrated decreased cell proliferation and reduced survival when treated with Nerlynx (neratinib) in culture (PMID: 30449325). 30449325
ERBB2 R678Q breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 R678Q demonstrated growth inhibition when treated with Tykerb (lapatinib) (PMID: 23220880). 23220880
ERBB2 R678Q Advanced Solid Tumor predicted - sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R678Q demonstrated decreased cell proliferation and reduced survival when treated with Tykerb (lapatinib) in culture (PMID: 30449325). 30449325
ERBB2 R678Q Advanced Solid Tumor predicted - sensitive Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R678Q demonstrated decreased cell proliferation and reduced survival when treated with Herceptin (trastuzumab) in culture (PMID: 30449325). 30449325
ERBB2 R678Q gastroesophageal junction adenocarcinoma predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.7 months in a patient with gastroesophageal cancer harboring ERBB2 (HER2) R678Q (PMID: 29420467; NCT01953926). 29420467
ERBB2 R678Q breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) R678Q demonstrated growth inhibition when treated with Nerlynx (neratinib) (PMID: 23220880). 23220880
ERBB2 V773A Advanced Solid Tumor sensitive HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, AEE788 inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) V773A in culture (PMID: 22046346). 22046346
ERBB2 V773A Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, higher dose of Tykerb (lapatinib) inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) V773A in culture (PMID: 22046346). 22046346
ERBB2 G776delinsLC Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) G776delinsLC in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsLC were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor resistant Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsLC were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor resistant HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsLC were resistant to Imbruvica (ibrutinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsLC were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor sensitive HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited survival of transformed cells expressing ERBB2 (HER2) G776delinsLC in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsLC were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) G776delinsLC in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC lung cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited Erbb2 (Her2) phosphorylation and downstream signaling in bronchial epithelial cells expressing ERBB2 (HER2) G776delinsLC in culture (PMID: 26545934). 26545934
ERBB2 G776delinsLC lung cancer no benefit Gefitinib Preclinical Actionable In a preclinical study, bronchial epithelial cells expressing ERBB2 (HER2) G776delinsLC did not demonstrate sensitivity to Iressa (gefitinib) in culture (PMID: 26545934). 26545934
ERBB2 G776delinsLC Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsLC were resistant to Vizimpro (dacomitinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsLC Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) G776delinsLC in culture (PMID: 31588020). 31588020
ERBB2 T733I Advanced Solid Tumor resistant Lapatinib Preclinical Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) T733I demonstrated resistance to treatment with Tykerb (lapatinib) (PMID: 18413839). 18413839
ERBB2 T733I biliary tract cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 3.7 months in a patient with biliary tract cancer harboring ERBB2 (HER2) T733I (PMID: 29420467; NCT01953926). 29420467
ERBB2 T733I Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) T733I in culture (PMID: 18413839). 18413839
ERBB2 P489L cancer sensitive HER2 Inhibitor Pelitinib Preclinical - Cell culture Actionable In a preclinical study, Pelitinib inhibited growth of transformed cells expressing ERBB2 (HER2) P489L in culture (PMID: 32366937). 32366937
ERBB2 P489L cancer sensitive HER inhibitor (Pan) Canertinib Preclinical - Cell culture Actionable In a preclinical study, Canertinib (CI-1033) inhibited growth of transformed cells expressing ERBB2 (HER2) P489L in culture (PMID: 32366937). 32366937
ERBB2 P489L cancer no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) P489L did not demonstrate sensitivity to growth inhibition by Tarceva (erlotinib) in culture (PMID: 32366937). 32366937
ERBB2 P489L cancer sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of transformed cells expressing ERBB2 (HER2) P489L in culture (PMID: 32366937). 32366937
ERBB2 P489L cancer no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) P489L did not demonstrate sensitivity to growth inhibition by Iressa (gefitinib) in culture (PMID: 32366937). 32366937
ERBB2 P489L cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited growth of transformed cells expressing ERBB2 (HER2) P489L in culture (PMID: 32366937). 32366937
ERBB2 P489L cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of transformed cells expressing ERBB2 (HER2) P489L in culture (PMID: 32366937). 32366937
ERBB2 L726F breast cancer resistant Lapatinib Preclinical Actionable In a preclinical study, breast cancer cells expressing ERBB2 (HER2) L726F demonstrated resistance to Tykerb (lapatinib) in both culture and xenograft models (PMID: 25435280). 25435280
ERBB2 L726F Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical - Cell culture Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) L726F in culture (PMID: 18413839). 18413839
ERBB2 L726F Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, transformed cells over expressing ERBB2 (HER2) L726F demonstrated reduced sensitivity to Tykerb (lapatinib) in culture (PMID: 18413839). 18413839
ERBB2 mutant lung non-small cell carcinoma sensitive HER2 Inhibitor Neratinib Phase I Actionable In a Phase I study, Nerlynx (neratinib) administered with temsirolimus was tolerable and demonstrated antitumor activity in ERBB2-mutant non-small-cell lung cancer (PMID: 24323026). 24323026
ERBB2 mutant lung non-small cell carcinoma sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in an objective response rate of 3.8% (1/26), a clinical benefit rate of 42.3% (11/26), and a median progression-free survival of 5.5 months in patients with non-small cell lung cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant invasive bladder transitional cell carcinoma predicted - sensitive Cisplatin + Gemcitabine + Sorafenib Phase II Actionable In a Phase II trial, ERBB2 (HER2) mutations were only detected in patients with muscle-invasive urothelial bladder cancer that responded to Nexavar (sorafenib), Platinol (cisplatin) and Gemzar (gemcitabine) combination therapy (J Clin Oncol 35, 2017 (suppl 6S; abstract 345)). detail...
ERBB2 mutant lung non-small cell carcinoma sensitive HER2 Inhibitor Pyrotinib Phase II Actionable In a Phase II trial, Pyrotinib treatment in non-small cell lung cancer patients harboring an ERBB2 (HER2) mutation resulted in a partial response in 54.5% (6/11) of patients and stable disease in 27.3% (3/11) of patients, and a PFS of 6.2 months (Journal of Thoracic Oncology, Vol. 12, Issue 1, S359). detail...
ERBB2 mutant lung adenocarcinoma sensitive HER inhibitor (Pan) Afatinib Phase II Actionable In a Phase II trial, treatment with Gilotrif (afatinib) resulted in objective response in 3 lung adenocarcinoma patients harboring ERBB2 (HER2) mutations (PMID: 22325357). 22325357
ERBB2 mutant lung cancer sensitive HER2 Inhibitor Neratinib Phase I Actionable In a Phase I clinical trial, Nerlynx (neratinib) administered with Torisel (temsirolimus) was tolerable and demonstrated antitumor activity in ERBB2 (HER2)-mutant non-small-cell lung cancer (PMID: 24323026). 24323026
ERBB2 mutant gastroesophageal junction adenocarcinoma no benefit HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in no objective response, a clinical benefit rate of 20% (1/5), and a median progression-free survival of 1.7 months in patients with gastroesophageal cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant colorectal cancer no benefit HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in no objective response, a clinical benefit rate of 8.3% (1/12), and a median progression-free survival of 1.8 months in patients with colorectal cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant Her2-receptor positive breast cancer sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial, Nerlynx (neratinib) treatment resulted in complete response in 12.5% (3/24) and partial response in 20.8% (5/24) of ERBB2 (HER2) mutant but not amplified breast cancer patients (Cancer Res 2017;77(4 Suppl):Abstract nr PD2-08). detail...
ERBB2 mutant Her2-receptor negative breast cancer sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in an object response rate of 24% (6/25), a clinical benefit rate of 40% (10/25), and a median progression-free survival of 3.5 months in patients with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant lung non-small cell carcinoma sensitive HER2 Inhibitor AV-412 Preclinical Actionable In a preclinical study, non-small cell lung cancer cells harboring an ERBB2 (HER2) mutation demonstrated sensitivity to AV-412, resulting in decreased phosphorylation of Erbb2, Akt, and Erk (PMID: 19459856). 19459856
ERBB2 mutant endometrial cancer no benefit HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in no objective response, a clinical benefit rate of 28.6% (2/7), and a median progression-free survival of 2.6 months in patients with endometrial cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant cervical cancer predicted - sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in an objective response rate of 20% (1/5), a clinical benefit rate of 60% (3/5), and a median progression-free survival of 20.1 months in patients with cervical cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant urinary bladder cancer no benefit HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in no objective response, a clinical benefit rate of 18.8% (3/16), and a median progression-free survival of 1.8 months in patients with bladder cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant biliary tract cancer predicted - sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in an objective response rate at 8 weeks of 22.2% (2/9), a clinical benefit rate of 33.3% (3/9), and a median progression-free survival of 2.8 months in patients with biliary tract cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mutant lung non-small cell carcinoma no benefit Trastuzumab Guideline Actionable Herceptin (trastuzumab) is not recommended as a monotherapy in guidelines for non-small cell lung cancer patients with ERBB2 mutations (NCCN.org). detail...
ERBB2 mutant breast cancer predicted - sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial, Nerlynx (neratinib) demonstrated activity in metastatic breast cancer patients harboring ERBB2 (HER2) mutations, with treatment resulting in a clinical benefit rate of 31% (5/16; 1 complete response, 1 partial response, and 3 patients achieving stable disease for 24 weeks or more) and a median progression-free survival of 16 weeks (PMID: 28679771). 28679771
ERBB2 mutant lung non-small cell carcinoma no benefit HER inhibitor (Pan) Afatinib Guideline Actionable Gilotrif (afatinib) is not recommended as a monotherapy in guidelines for non-small cell lung cancer patients with ERBB2 mutations (NCCN.org). detail...
ERBB2 mutant lung non-small cell carcinoma sensitive Ado-trastuzumab emtansine Guideline Actionable Kadcyla (trastuzumab emtansine) is included in guidelines for non-small cell lung cancer patients with ERBB2 (HER2) mutations (NCCN.org). detail...
ERBB2 mutant lung squamous cell carcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Phase III Actionable In a Phase III trial (LUX-Lung 8), secondary analysis demonstrated favorable outcomes with Gilotrif (afatinib) treatment compared to Tarceva (erlotinib) in lung squamous cell carcinoma patients with ERBB (HER) family mutations, and ERBB2 (HER2) mutations predicted an OS (HR=0.06, p=0.02) and PFS (HR=0.06, p=0.02) benefit for Gilotrif (afatinib) over Tarceva (erlotinib) treatment (PMID: 29902295; NCT01523587). 29902295
ERBB2 mutant lung non-small cell carcinoma predicted - sensitive Trastuzumab + Vinorelbine Case Reports/Case Series Actionable In a clinical study, treatment with Herceptin (trastuzumab) in combination with chemotherapy resulted in an objective response rate of 67% (4/6) in non-small cell lung carcinoma patients harboring ERBB2 (HER2) mutations that progressed during previous therapies (PMID: 28167203). 28167203
ERBB2 mutant ovarian cancer no benefit HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in no objective response, no clinical benefit, and a median progression-free survival of 2.1 months in patients with ovarian cancer harboring ERBB2 (HER2) mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 mut PIK3CA mut breast cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), 6 of 7 patients with ERBB2 (HER2)-mutant breast cancer who progressed on Nerlynx (neratinib) harbored either a PIK3CA (n=5) or PIK3R1 (n=1) mutation (PMID: 31978326). 31978326
ERBB2 D769N Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) D769N were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 D769N cervical cancer no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 3.5 months in a patient with cervical cancer harboring ERBB2 (HER2) D769N (PMID: 29420467; NCT01953926). 29420467
ERBB2 D769N Advanced Solid Tumor sensitive HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor sensitive Osimertinib Preclinical - Cell culture Actionable In a preclinical study, Tagrisso (osimertinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, Tykerb (lapatinib) inhibited growth of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor sensitive Nazartinib Preclinical - Cell culture Actionable In a preclinical study, Nazartinib (EGF816) inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor sensitive HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, Imbruvica (ibrutinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 D769N Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) D769N in culture (PMID: 31588020). 31588020
ERBB2 V697L endometrial cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.6 months in a patient with endometrial cancer harboring ERBB2 (HER2) V697L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V697L triple-receptor negative breast cancer sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial, a triple-negative breast cancer patient harboring ERBB2 V697L demonstrated a response to treatment with Nerlynx (neratinib) (PMID: 29247016). 29247016
ERBB2 V697L Advanced Solid Tumor predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial, a patient with cancer of unknown primary involving the head and neck that harbored ERBB2 (HER2) V697L demonstrated a response to treatment with Nerlynx (neratinib) that lasted 13 months (PMID: 29247016). 29247016
ERBB2 G660R Advanced Solid Tumor predicted - sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660R demonstrated decreased cell proliferation and reduced survival when treated with Tykerb (lapatinib) in culture (PMID: 30449325). 30449325
ERBB2 G660R Advanced Solid Tumor predicted - sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660R demonstrated decreased cell proliferation and reduced survival when treated with Gilotrif (afatinib) in culture (PMID: 30449325). 30449325
ERBB2 G660R Advanced Solid Tumor predicted - sensitive Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660R demonstrated decreased cell proliferation and reduced survival when treated with Herceptin (trastuzumab) in culture (PMID: 30449325). 30449325
ERBB2 G660R Advanced Solid Tumor predicted - resistant Cetuximab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660R demonstrated resistance to treatment with Erbitux (cetuximab) in culture (PMID: 30449325). 30449325
ERBB2 G660R Advanced Solid Tumor no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660R did not benefit from treatment with Iressa (gefitinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 G660R Advanced Solid Tumor no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660R did not benefit from treatment with Tarceva (erlotinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 G660R Advanced Solid Tumor predicted - resistant Pertuzumab Preclinical - Cell culture Actionable In a preclinical study, treatment with Perjeta (pertuzumab) in transformed cells expressing ERBB2 (HER2) G660R was not effective in inhibiting cell proliferation and survival as compared to other activating ERBB2 (HER2) mutations in culture (PMID: 30449325). 30449325
ERBB2 G660R Advanced Solid Tumor predicted - sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660R demonstrated decreased cell proliferation and reduced survival when treated with Nerlynx (neratinib) in culture (PMID: 30449325). 30449325
ERBB2 D769H Her2-receptor negative breast cancer no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 3.5 months in a patient with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) D769H (PMID: 29420467; NCT01953926). 29420467
ERBB2 D769H colorectal cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.9 months in a patient with colorectal cancer harboring ERBB2 (HER2) D769H (PMID: 29420467; NCT01953926). 29420467
ERBB2 D769H Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769H breast cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 D769H reverted to normal morphology in culture upon Herceptin (trastuzumab) treatment (PMID: 23220880). 23220880
ERBB2 D769H Advanced Solid Tumor sensitive HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769H Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) D769H were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 D769H Advanced Solid Tumor sensitive HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, Imbruvica (ibrutinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769H Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769H breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) D769H demonstrated growth inhibition when treated with Nerlynx (neratinib) (PMID: 23220880). 23220880
ERBB2 D769H Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) D769H were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 D769H Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769H breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 D769H demonstrated growth inhibition when treated with Tykerb (lapatinib) (PMID: 23220880). 23220880
ERBB2 D769H Advanced Solid Tumor sensitive Osimertinib Preclinical - Cell culture Actionable In a preclinical study, Tagrisso (osimertinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769H Advanced Solid Tumor sensitive Nazartinib Preclinical - Cell culture Actionable In a preclinical study, Nazartinib (EGF816) inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 D769H Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769H in culture (PMID: 31588020). 31588020
ERBB2 V773L breast cancer sensitive Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) V773L were sensitive to Herceptin (trastuzumab) in culture, resulting in decreased colony formation (PMID: 27697991). 27697991
ERBB2 V773L breast cancer sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) V773L were sensitive to Tykerb (lapatinib) in culture, resulting in decreased colony formation (PMID: 27697991). 27697991
ERBB2 V773L breast cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) V773L were sensitive to Nerlynx (nerlatinib) in culture, resulting in decreased colony formation (PMID: 27697991). 27697991
ERBB2 G776V cervical cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), a heavily pretreated cervical cancer patient harboring ERBB2 (HER2) G776V demonstrated stable disease when treated with Nerlynx (neratinib) (PMID: 32723675; NCT01953926). 32723675
ERBB2 G776V Advanced Solid Tumor sensitive HER2 Inhibitor AP32788 Preclinical - Cell culture Actionable In a preclinical study, AP32788 inhibited growth of transformed cell lines over expressing ERBB2 (HER2) G776V in culture (AACR, Cancer Res: April 2016; Volume 57, Abstract #2644). detail...
ERBB2 G776V PIK3CA H1047R ovarian cancer resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, expression of PIK3CA H1047R conferred resistance to Nerlynx (neratinib) in an ovarian cancer cell line harboring ERBB2 (HER2) G776V in culture (PMID: 31978326). 31978326
ERBB2 G776V PIK3CA H1047R ovarian cancer sensitive HER2 Inhibitor Everolimus + Neratinib Preclinical - Cell culture Actionable In a preclinical study, the addition of Afinitor (everolimus) to treatment with Nerlynx (neratinib) inhibited viability of an ovarian cancer cell line harboring ERBB2 (HER2) G776V and expressing PIK3CA H1047R in culture (PMID: 31978326). 31978326
ERBB2 V604_E619del breast cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited Erbb2 signaling and viability of transformed breast epithelial cells expressing ERBB2 (HER2) V604_E619del in culture (PMID: 31135266). 31135266
ERBB2 V604_E619del breast cancer sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, Tykerb (lapatinib) inhibited Erbb2 signaling and viability of transformed breast epithelial cells expressing ERBB2 (HER2) V604_E619del in culture (PMID: 31135266). 31135266
ERBB2 G660D Advanced Solid Tumor predicted - sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660D demonstrated decreased cell proliferation and reduced survival when treated with Tykerb (lapatinib) in culture (PMID: 30449325). 30449325
ERBB2 G660D Advanced Solid Tumor predicted - resistant Cetuximab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660D demonstrated resistance to treatment with Erbitux (cetuximab) in culture (PMID: 30449325). 30449325
ERBB2 G660D lung cancer no benefit Gefitinib Preclinical Actionable In a preclinical study, bronchial epithelial cells cells expressing ERBB2 (HER2) G660D did not demonstrate sensitivity to Iressa (gefitinib) in culture (PMID: 26545934). 26545934
ERBB2 G660D Advanced Solid Tumor no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660D did not benefit from treatment with Tarceva (erlotinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 G660D Advanced Solid Tumor no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660D did not benefit from treatment with Iressa (gefitinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 G660D Advanced Solid Tumor predicted - resistant Pertuzumab Preclinical - Cell culture Actionable In a preclinical study, treatment with Perjeta (pertuzumab) led to induced growth and colony formation of cells expressing ERBB2 (HER2) G660D in culture (PMID: 30449325). 30449325
ERBB2 G660D lung cancer sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical study, a patient with lung cancer harboring a germline mutation, ERBB2 (HER2) G660D, demonstrated improved symptoms within 30 days of Gilotrif (afatinib) treatment, as well as a 21% reduction in tumor volume in 12 weeks and a durable response that lasted for more than 15 weeks (PMID: 30449325). 30449325
ERBB2 G660D lung cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited Erbb2 (Her2) phosphorylation and downstream signaling in bronchial epithelial cells expressing ERBB2 (HER2) G660D in culture (PMID: 26545934). 26545934
ERBB2 G660D lung cancer sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical case study, Gilotrif (afatinib) treatment resulted in partial response in the lung lesion and stable bone metastasis for over 16 months in a patient with familial lung cancer harboring germline ERBB2 G660D mutation (PMID: 29146616). 29146616
ERBB2 G660D Advanced Solid Tumor predicted - sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660D demonstrated decreased cell proliferation and reduced survival when treated with Gilotrif (afatinib) in culture (PMID: 30449325). 30449325
ERBB2 G660D Advanced Solid Tumor predicted - sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660D demonstrated decreased cell proliferation and reduced survival when treated with Nerlynx (neratinib) in culture (PMID: 30449325). 30449325
ERBB2 G660D Advanced Solid Tumor sensitive Trastuzumab Preclinical Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G660D treated with Herceptin (trastuzumab) demonstrated decreased proliferation, reduced survival, and inhibition of colony formation in culture, and in mouse models led to improved survival compared to control models with wild-type ERBB2 (HER2) (PMID: 30449325). 30449325
ERBB2 S310F ERBB2 G660D ampulla of Vater carcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical case study, Gilotrif (afatinib) treatment resulted in stable disease with slight lymph node metastasis reduction in a patient with ampulla of Vater carcinoma harboring ERBB2 S310F and G660D, but the disease eventually progressed after 4 months (PMID: 29146616). 29146616
ERBB2 G776delinsIC lung non-small cell carcinoma no benefit HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, a patient with non-small cell lung cancer harboring ERBB2 G776delinsIC did not respond to treatment with Pyrotinib and developed progressive disease (PMID: 30596880; NCT02535507). 30596880
ERBB2 V842I colorectal cancer resistant Cetuximab Preclinical Actionable In a preclinical study, colorectal cancer cell lines over expressing ERBB2 (HER2) V842I were resistant to Erbitux (cetuximab) in culture (PMID: 26243863). 26243863
ERBB2 V842I breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 V842I demonstrated growth inhibition when treated with Tykerb (lapatinib) (PMID: 23220880). 23220880
ERBB2 V842I breast cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 V842I reverted to normal morphology in culture upon Herceptin (trastuzumab) treatment (PMID: 23220880). 23220880
ERBB2 V842I Advanced Solid Tumor sensitive HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, Imbruvica (ibrutinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V842I in culture (PMID: 31588020). 31588020
ERBB2 V842I Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V842I were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 V842I colorectal cancer conflicting HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease in 2 patients and progressive disease in 1 patient with colorectal cancer harboring ERBB2 (HER2) V842I (PMID: 29420467; NCT01953926). 29420467
ERBB2 V842I colorectal cancer conflicting HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of colorectal cancer cell lines over expressing ERBB2 (HER2) V842I in culture (PMID: 26243863). 26243863
ERBB2 V842I Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V842I in culture (PMID: 31588020). 31588020
ERBB2 V842I Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V842I were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 V842I Advanced Solid Tumor sensitive HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited survival of transformed cells expressing ERBB2 (HER2) V842I in culture (PMID: 31588020). 31588020
ERBB2 V842I colon cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited colony formation in transformed mouse colon epithelial cells over expressing ERBB2 (HER2) V842I in culture (PMID: 26243863). 26243863
ERBB2 V842I Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) V842I in culture (PMID: 31588020). 31588020
ERBB2 V842I breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) V842I demonstrated growth inhibition when treated with Nerlynx (neratinib) (PMID: 23220880). 23220880
ERBB2 V842I Advanced Solid Tumor resistant Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V842I were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 V842I endometrial cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.8 months in a patient with endometrial cancer harboring ERBB2 (HER2) V842I (PMID: 29420467; NCT01953926). 29420467
ERBB2 V842I colon cancer resistant Trastuzumab Preclinical Actionable In a preclinical study, transformed mouse colon epithelial cells over expressing ERBB2 (HER2) V842I were resistant to Herceptin (trastuzumab) in culture (PMID: 26243863). 26243863
ERBB2 V842I colorectal cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of colorectal cancer cell lines over expressing ERBB2 (HER2) V842I in culture (PMID: 26243863). 26243863
ERBB2 V842I colorectal cancer resistant Panitumumab Preclinical Actionable In a preclinical study, colorectal cancer cell lines over expressing ERBB2 (HER2) V842I were resistant to Vectibix (panitumumab) in culture (PMID: 26243863). 26243863
ERBB2 V842I Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) V842I in culture (PMID: 31588020). 31588020
ERBB2 V842I Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V842I in culture (PMID: 31588020). 31588020
ERBB2 V842I Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V842I were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 S310F ERBB2 V842I cervical cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), a heavily pretreated cervical cancer patient co-harboring ERBB2 (HER2) S310F and ERBB2 (HER2) V842I demonstrated a partial response when treated with Nerlynx (neratinib) (PMID: 32723675; NCT01953926). 32723675
ERBB2 S310F ERBB2 V842I breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial, Nerlynx (neratinib) treatment resulted in a clinical benefit rate of 31% (5/16) in metastatic breast cancer patients harboring ERBB2 (HER2) mutations, with 1 patient harboring ERBB2 (HER2) S310F and V842R achieved stable disease over 6 months (PMID: 28679771; NCT01670877). 28679771
ERBB2 V777L ERBB2 V842I colorectal cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.8 months in a patient with colorectal cancer harboring ERBB2 (HER2) V777L and V842I (PMID: 29420467; NCT01953926). 29420467
ERBB2 E717K Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) E717K in culture (PMID: 18413839). 18413839
ERBB2 E717K Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, transformed cells over expressing ERBB2 (HER2) E717K demonstrated reduced sensitivity to Tykerb (lapatinib) in culture (PMID: 18413839). 18413839
ERBB2 V773M Advanced Solid Tumor sensitive HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, Imbruvica (ibrutinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V773M in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V773M were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor resistant Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V773M were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V773M were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) V773M in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V773M in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V773M in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V773M were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor sensitive HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited survival of transformed cells expressing ERBB2 (HER2) V773M in culture (PMID: 31588020). 31588020
ERBB2 V773M Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) V773M in culture (PMID: 31588020). 31588020
ERBB2 Y803N Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) Y803N in culture (PMID: 18413839). 18413839
ERBB2 Y803N Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, transformed cells over expressing ERBB2 (HER2) Y803N demonstrated reduced sensitivity to Tykerb (lapatinib) in culture (PMID: 18413839). 18413839
ERBB2 R456C ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a clinical study, Nerlynx (neratinib) treatment resulted in partial response in 2 of 6 and disease stabilization in 4 of 6 breast cancer patients with ERBB2 (HER2) amplification and an ERBB2 (HER2) mutation, including stable disease in a patient harboring ERBB2 (HER2) R456C (PMID: 30301790). 30301790
ERBB2 E719G Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) E719G in culture (PMID: 18413839). 18413839
ERBB2 E719G Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, transformed cells over expressing ERBB2 (HER2) E719G demonstrated reduced sensitivity to Tykerb (lapatinib) in culture (PMID: 18413839). 18413839
ERBB2 G776delinsVV Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor resistant HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Pyrotinib in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor resistant HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Imbruvica (ibrutinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Nerlynx (neratinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor sensitive Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) G776delinsVV in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Vizimpro (dacomitinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G776delinsVV were resistant to Gilotrif (afatinib) in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) G776delinsVV in culture (PMID: 31588020). 31588020
ERBB2 G776delinsVV Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited growth of a transformed cell line expressing ERBB2 (HER2) G776delinsVV in culture (PMID: 29686424). 29686424
ERBB2 D821N Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) D821N in culture (PMID: 18413839). 18413839
ERBB2 D277G ERBB2 S310F urinary bladder cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.7 months in a patient with bladder cancer harboring both ERBB2 (HER2) D277G and S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 L915M Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical - Cell culture Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) L915M in culture (PMID: 18413839). 18413839
ERBB2 L726I breast cancer resistant Gefitinib Preclinical Actionable In a preclinical study, an ERBB2 (HER2) L726I mutation was detected in a murine breast cancer cell line that acquired resistance to Iressa (gefitinib) in culture (PMID: 17638894). 17638894
ERBB2 K753E breast cancer resistant Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) K753E were resistant to Herceptin (trastuzumab) in culture (PMID: 27697991). 27697991
ERBB2 K753E breast cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) K753 were sensitive to Nerlynx (neratinib) in culture, resulting in decreased colony formation (PMID: 27697991). 27697991
ERBB2 K753E breast cancer resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) K753E were resistant to Tykerb (lapatinib) in culture (PMID: 27697991). 27697991
ERBB2 amp lung cancer sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, Tykerb (lapatinib) treatment reduced viability of a lung cancer cell line harboring an ERBB2 (HER2) amplification in culture (PMID: 30674502). 30674502
ERBB2 amp gastrointestinal system cancer sensitive HER inhibitor (Pan) Dacomitinib Preclinical Actionable In a preclinical study, Vizimpro (dacomitinib) demonstrated significant growth-inhibitory effects in HER2- amplified gastric cancer cells (PMID: 18606718). 18606718
ERBB2 amp esophagus adenocarcinoma no benefit Lapatinib Phase III Actionable In a Phase III clinical trial, the addition of Tykerb (lapatinib) to Xeloda (capecitabine) and Eloxatin (oxaliplatin) combination treatment did not significantly prolong overall survival compared to placebo, but did improve progression-free survival and response rate in esophagus adenocarcinoma patients harboring ERBB2 amplification (PMID: 26628478). 26628478
ERBB2 amp gastric adenocarcinoma sensitive Trastuzumab FDA approved - On Companion Diagnostic Actionable In a Phase III trial (ToGA) that supported FDA approval, patients with either gastric or gastroesophageal junction adenocarcinoma with ERBB2 (HER2) overexpression or ERBB2 (HER2) amplification had increased overall survival (13.8 mo vs 11.1 mo) when treated with Herceptin (trastuzumab) in combination with chemotherapy compared to chemotherapy alone (PMID: 20728210; NCT01041404). detail... 20728210 detail...
ERBB2 amp colorectal cancer resistant Trastuzumab Preclinical Actionable In a preclinical study, colorectal cancer tumorgrafts with ERBB2 (HER2) amplification demonstrated resistance to Herceptin (trastuzumab) treatment in animal models (PMID: 26296355). 26296355
ERBB2 amp breast cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of breast cancer cells with ERBB2 (HER2) amplification in culture (PMID: 21558396). 21558396
ERBB2 amp lung non-small cell carcinoma predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 13% (2/16, all partial response) and stable disease lasting over 120 days in 13% (2/16) of patients with non-small cell lung cancer harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp stomach cancer sensitive HER2 Inhibitor BMS-690514 Preclinical Actionable In a preclinical study, BMS-690514 inhibited tumor growth in a gastric cancer xenograft model with ERBB2 (HER2) amplification and overexpression (PMID: 21531814). 21531814
ERBB2 amp stomach cancer sensitive Lapatinib Preclinical Actionable In preclinical studies, Tykerb (lapatinib) demonstrated antiproliferative activity in HER2-amplified gastric cancer in cell assays and in xenograft models (PMID: 20179222). 20179222
ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial, increased copy number (CN) of ERBB2 (HER2) was associated with improved response to Poziotinib (HM781-36B) treatment in patients with Erbb2 (Her2)-positive breast cancer, with a median progression-free survival of 4.86 months in patients with CN over 8 and 2.99 months in patients with CN equal to or less than 8 (HR=0.61, p=0.037) (PMID: 30720867, NCT02418689). 30720867
ERBB2 amp stomach cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical Actionable In a preclinical study, Poziotinib suppressed cell growth, decreased phosphorylation of downstream signaling molecules, and induced apoptosis of human gastric cancer cells harboring ERBB2 (HER2) amplification (PMID: 21306821). 21306821
ERBB2 amp lung cancer predicted - sensitive HER2 Inhibitor TAS0728 Preclinical - Cell culture Actionable In a preclinical study, TAS0728 inhibited Erbb2 downstream signaling and proliferation of ERBB2 (HER2) amplified lung cancer cells in culture (PMID: 30787176). 30787176
ERBB2 amp colorectal cancer decreased response Panitumumab Clinical Study - Cohort Actionable In a retrospective analysis, patients with metastatic KRAS exon 2 wild-type colorectal cancer harboring ERBB2 (HER2) amplification or overexpression (n=79) demonstrated poorer objective response rate (31.2 vs 46.9, p=0.031) and progression-free survival (5.7 vs 7 months, p=0.087) to anti-EGFR treatment (Vectibix (panitumumab) or Erbitux (cetuximab), as monotherapy or combined with chemotherapy) when compared to ERBB2 (HER2)-negative patients (n=113) (PMID: 30952821). 30952821
ERBB2 amp Her2-receptor positive breast cancer sensitive Trastuzumab-anns Phase III Actionable In a Phase III (LILAC) trial, Kanjinti (Trastuzumab-anns) treatment demonstrated safety and efficacy similar to Herceptin (trastuzumab) in neoadjuvant and adjuvant settings, resulted in a complete response in 48% (172/358) of patients with Erbb2 (Her2)-positive breast cancer, compared to 41% (137/338) in Herceptin (trastuzumab)-treated patients (PMID: 29880292; NCT01901146). 29880292
ERBB2 amp breast cancer sensitive Buparlisib Preclinical - Cell line xenograft Actionable In a preclinical study, a breast cancer cell line xenograft model harboring ERBB2 (HER2) amplification demonstrated tumor regression within the mammary fat pad when treated with Buparlisib (BKM120) (PMID: 28539475). 28539475
ERBB2 amp stomach cancer sensitive Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, Herceptin (trastuzumab) inhibited tumor growth in human cell line xenograft models of gastric cancer with ERBB2 (HER2) amplification (PMID: 26296355). 26296355
ERBB2 amp pancreatic cancer predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 22% (2/9, all partial response) and stable disease lasting over 120 days in 11% (1/9) of patients with pancreatic cancer harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp urinary bladder cancer sensitive HER inhibitor (Pan) Afatinib Phase II Actionable In a Phase II clinical trial, patients with ERBB2 (HER2) amplified urothelial carcinoma had improved progression free survival when treated with Gilotrif (afatinib), and median PFS was 6.6 months for patients with ERBB2 or ERBB3 alterations relative to 1.4 months for patients lacking alterations (PMID: 27044931). 27044931
ERBB2 amp breast cancer predicted - sensitive HER2 Inhibitor Neratinib + Temsirolimus Phase I Actionable In a Phase I clinical trial, Nerlynx (neratinib) administered with Torisel (temsirolimus) was tolerable and demonstrated antitumor activity in ERBB2 (HER2)-amplified breast cancer resistant to (Herceptin) trastuzumab (PMID: 24323026). 24323026
ERBB2 amp acral lentiginous melanoma sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a clinical case study, Kadcyla (trastuzumab emtansine) treatment resulted in complete radiographic response that lasted over 28 months in a patient with acral melanoma harboring ERBB2 (HER2) amplification (26-fold) that was resistant to check-point inhibition (PMID: 30093446). 30093446
ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive BGB-283 Preclinical - Cell culture Actionable In a preclinical study, BGB-283 inhibited proliferation of ERBB2 (HER2) amplified breast cancer cells in culture (PMID: 26208524). 26208524
ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive KRIBB11 + MK2206 Preclinical - Cell culture Actionable In a preclinical study, MK-2206 and KRIBB11 synergistically inhibited growth of ERBB2 (HER2)-amplified breast cancer cell lines in culture (PMID: 28598816). 28598816
ERBB2 amp Her2-receptor positive breast cancer sensitive trastuzumab and hyaluronidase-oysk injection FDA approved - On Companion Diagnostic Actionable In a Phase III trial (HannaH) that supported FDA approval, Herceptin Hylecta (trastuzumab and hyaluronidase-oysk injection) treatment demonstrated safety and efficacy profile comparable to intravenous trastuzumab treatment, resulted in pathologic complete response in 45.4% (118/260) of patients with ERBB2 (HER2)-positive (IHC 3+ or ISH positive) breast cancer (PMID: 22884505; NCT00950300). detail... detail... 22884505
ERBB2 amp Her2-receptor positive breast cancer sensitive Pertuzumab/trastuzumab/hyaluronidase-zzxf FDA approved Actionable In a Phase III trial (FeDeriCa) that supported FDA approval, Phesgo (pertuzumab/trastuzumab/hyaluronidase-zzxf) treatment in combination with chemotherapy in the neoadjuvant-adjuvant setting demonstrated safety and total pathological complete response rate (59.7% vs 59.5%) comparable to intravenous Perjeta (pertuzumab) and Herceptin (trastuzumab) plus chemotherapy in patients with ERBB2 (HER2)-positive early breast cancer (Cancer Res 2020;80(4 Suppl):Abstract nr PD4-07; NCT03493854). detail... detail...
ERBB2 amp lung adenocarcinoma no benefit HER inhibitor (Pan) Dacomitinib Case Reports/Case Series Actionable In a Phase II trial, Vizimpro (dacomitinib) treatment resulted in an overall response rate of 0% (0/4) in patients with lung adenocarcinoma harboring ERBB2 (HER2) amplification (PMID: 25899785; NCT00818441). 25899785
ERBB2 amp colorectal cancer no benefit Pertuzumab Preclinical - Pdx Actionable In a preclinical study, Perjeta (pertuzumab) did not inhibit tumor growth in patient-derived xenograft (PDX) models of ERBB2 (HER2)-amplified colorectal cancer (PMID: 22586653). 22586653
ERBB2 amp stomach cancer predicted - sensitive Fluorouracil + Oxaliplatin + Trastuzumab Case Reports/Case Series Actionable In a Phase II clinical trial, a gastric cancer patient with ERBB2 (HER2) amplification demonstrated a response for 24 months when treated with the combination of Adrucil (fluorouracil), Eloxatin (oxaliplatin), and Herceptin (trastuzumab) (PMID: 30463996; NCT01522768). 30463996
ERBB2 amp uterine cancer no benefit Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in no objective response (0/7) in patients with uterine cancer harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp parotid gland cancer predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II (MATCH) trial, Kadcyla (trastuzumab emtansine) treatment resulted in partial response in a patient with ERBB2 (HER2) amplified salivary duct carcinoma of the parotid gland and a patient with ERBB2 (HER2) amplified squamous cell carcinoma of the parotid gland (J Clin Oncol 36, 2018 (suppl; abstr 100); NCT02465060). detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive CDX-3379 + Trastuzumab Preclinical Actionable In a preclinical study, the combination of Herceptin (trastuzumab) and CDX-3379 (KTN3379) inhibited tumor growth in xenograft models of ERBB2 (HER2)-amplified breast cancer, with increased efficacy compared to KTN3379 alone (PMID: 26880266). 26880266
ERBB2 amp colorectal cancer resistant Cetuximab Clinical Study - Cohort Actionable In a retrospective analysis, patients with metastatic KRAS exon 2 wild-type colorectal cancer harboring ERBB2 (HER2) amplification or overexpression (n=79) demonstrated poorer objective response rate (31.2 vs 46.9, p=0.031) and progression-free survival (5.7 vs 7 months, p=0.087) to anti-EGFR treatment (Vectibix (panitumumab) or Erbitux (cetuximab), as monotherapy or combined with chemotherapy) when compared to ERBB2 (HER2)-negative patients (n=113) (PMID: 30952821). 30952821
ERBB2 amp colorectal cancer resistant Cetuximab Clinical Study - Cohort Actionable In a clinical study, ERBB2 (HER2) amplification was associated with resistance to Erbitux (cetuximab) in colorectal cancer patients (PMID: 21900593). 21900593
ERBB2 amp esophageal cancer sensitive HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, esophageal cancer cells with ERBB2 (HER2) amplification demonstrated sensitivity to Imbruvica (ibrutinib), resulting in decreased survival in culture (PMID: 28830912). 28830912
ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Capecitabine + Neratinib Guideline Actionable Nerlynx (neratinib) combined with Xeloda (capecitabine) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Capecitabine + Neratinib FDA approved Actionable In a Phase III (NALA) trial that supported FDA approval, combination of Nerlynx (neratinib) and Xeloda (capecitabine) reduced risk of disease progression or death (HR=0.76, p=0.006), improved 12-month PFS (28.8%, 88/307 vs 14.8%, 46/314) compared to lapatinib and capecitabine combination in patients with metastatic ERBB2 (HER2)-positive (amp/over exp) breast cancer who had 2 or more prior ERBB2 (HER2)-targeted therapies (J Clin Oncol 37, no. 15_suppl (May 20, 2019) 1002-1002; NCT01808573). detail... detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive Trastuzumab + Vinorelbine Guideline Actionable The combination of Herceptin (trastuzumab) and Navelbine (vinorelbine) is included in guidelines as first-line therapy for ERBB2 (HER2)-positive patients with advanced breast cancer (PMID: 30032243; ESMO.org). 30032243 detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive Trastuzumab + Vinorelbine Guideline Actionable Herceptin (trastuzumab) combined with Navelbine (vinorelbine) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor TAS0728 Preclinical - Cell line xenograft Actionable In a preclinical study, TAS0728 inhibited Erbb2 downstream signaling and proliferation of ERBB2 (HER2) amplified breast cancer cell lines in culture, and induced tumor regression in cell line xenograft models (PMID: 30787176). 30787176
ERBB2 amp Her2-receptor positive breast cancer sensitive Ado-trastuzumab emtansine FDA approved - On Companion Diagnostic Actionable In a Phase III trial (EMILIA) that supported FDA approval, treatment with Kadclya (trastuzumab emtansine) improved median progression free survival (9.6 mo vs 6.4 mo) and overall survival (30.9 mo vs 25.1 mo) compared to Tykerb (lapatinib) combined with Xeloda (capecitabine) in patients with metastatic ERBB2 (HER2)-positive breast cancer (PMID: 24879797, PMID: 23020162; NCT00829166). 24879797 23020162 detail... detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive Ado-trastuzumab emtansine FDA approved - On Companion Diagnostic Actionable In a Phase III trial (KATHERINE) that supported FDA approval, treatment with Kadclya (trastuzumab emtansine) resulted in improved invasive disease-free survival (HR=0.50, p<0.001) compared to Herceptin (trastuzumab) in patients with ERBB2 (HER2)-positive early breast cancer who had residual invasive disease after taxane and trastuzumab-based neoadjuvant therapy (PMID: 30516102; NCT01772472). detail... detail... 30516102
ERBB2 amp Her2-receptor positive breast cancer sensitive Ado-trastuzumab emtansine Guideline Actionable Kadcyla (ado-trastuzumab emtansine) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive Ado-trastuzumab emtansine Guideline Actionable Kadcyla (ado-trastuzumab emtansine) is included in the guidelines for ERBB2 (HER2)-positive patients with advanced breast cancer who progressed through one line of Herceptin (trastuzumab)-based therapy or ERBB2 (HER2)-positive patients with early breast cancer (PMID: 31236598, PMID: 30032243; ESMO.org). detail... 31236598 30032243
ERBB2 amp salivary gland carcinoma predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II (MyPathway) trial, Perjeta (pertuzumab) and Herceptin (trastuzumab) combination therapy resulted in an objective response rate of 60% (9/15, 1 complete response, 8 partial responses) and a clinical benefit rate of 67% (10/15) in patients with advanced salivary gland carcinoma harboring ERBB2 (HER2) amplification or overexpression, with a median progression- free survival of 8.6 months, and a median overall survival of 20.4 months (PMID: 32067683; NCT02091141). 32067683
ERBB2 amp colorectal cancer predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 38% (14/37, all partial response) and stable disease lasting over 120 days in 11% (4/37) of patients with colorectal cancer harboring ERBB2 (HER2) amplification or overexpression, with a median duration of response of 11 months (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp Her2-receptor positive breast cancer sensitive Carboplatin + Paclitaxel + Trastuzumab Guideline Actionable Herceptin combined with Paraplatin (carboplatin) and Taxol (paclitaxel) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp breast cancer sensitive Pertuzumab + Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, breast cancer cell line xenograft models harboring ERBB2 (HER2) amplification were sensitive to the combination of Herceptin (trastuzumab) and Perjeta (pertuzumab), resulting in a delay of brain lesion growth and improved survival (PMID: 28539475). 28539475
ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive Entinostat + Lapatinib + Trastuzumab Phase I Actionable In a Phase Ib trial, combination treatment consisted of Entinostat, Tykerb (lapatinib) and Herceptin (trastuzumab) resulted in complete response in 9.5% (2/21), partial response in 14.3% (3/21), and stable disease in 38.1% (8/21) of patients with ERBB2 (HER2)-positive breast cancer that progressed through Herceptin (trastuzumab) treatment (PMID: 31097774; NCT01434303). 31097774
ERBB2 amp Her2-receptor positive breast cancer sensitive Docetaxel + Pertuzumab + Trastuzumab Guideline Actionable Perjeta (pertuzumab), Herceptin (trastuzumab), and Taxotere (docetaxel) therapy is included in the guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive Docetaxel + Pertuzumab + Trastuzumab FDA approved - On Companion Diagnostic Actionable In a Phase III trial (CLEOPATRA) that supported FDA approval, treatment with Perjeta (pertuzumab), combined with Herceptin (trastuzumab) and Taxotere (docetaxel), improved median progression free survival to 18.5 months compared to 12.4 months with placebo plus Herceptin (trastuzumab) and Taxotere (docetaxel) in patients with ERBB2 (HER2)-positive (overexpression and amplification) metastatic breast cancer (PMID: 23602601; NCT00567190). 23602601 detail... detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive Lapatinib + S63845 Preclinical - Cell culture Actionable In a preclinical study, the combination of Tykerb (lapatinib) and S63845 demonstrated synergy in an ERBB2 (HER2)-amplified breast cancer cell line in culture, resulting in decreased cell viability (PMID: 28768804). 28768804
ERBB2 amp gastroesophageal junction adenocarcinoma sensitive Trastuzumab FDA approved - On Companion Diagnostic Actionable In a Phase III trial (ToGA) that supported FDA approval, patients with either gastric cancer or gastroesophageal junction adenocarcinoma with ERBB2 (HER2) overexpression or ERBB2 (HER2) amplification had increased overall survival (13.8 mo vs 11.1 mo) when treated with Herceptin (trastuzumab) in combination with chemotherapy compared to chemotherapy alone (PMID: 20728210; NCT01041404). 20728210 detail... detail...
ERBB2 amp Advanced Solid Tumor predicted - sensitive Ado-trastuzumab emtansine Phase II Actionable In a Phase II (MATCH) trial, Kadcyla (trastuzumab emtansine) treatment resulted in partial response in 8.1% (3/37) and stable disease in 43% (16/37) of patients with ERBB2 (HER2) amplified non-breast, non-gastric advanced solid tumors, with a 6-month progression-free survival rate of 24.8% (J Clin Oncol 36, 2018 (suppl; abstr 100); NCT02465060). detail...
ERBB2 amp breast cancer sensitive Elgemtumab + Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, breast cancer cell line xenograft models harboring ERBB2 (HER2) amplification were sensitive to the combination of Herceptin (trastuzumab) and LJM716, resulting in a delay of brain lesion growth and improved survival (PMID: 28539475). 28539475
ERBB2 amp scrotum Paget's disease predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II (MATCH) trial, Kadcyla (trastuzumab emtansine) treatment resulted in partial response in a patient with ERBB2 (HER2) amplified Paget’s disease of the scrotum (J Clin Oncol 36, 2018 (suppl; abstr 100); NCT02465060). detail...
ERBB2 amp urinary bladder cancer predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 33% (3/9, 1 complete response, 1 partial response) and stable disease lasting over 120 days in 22% (2/9) of patients with bladder cancer harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp lung non-small cell carcinoma sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell line xenograft Actionable In a preclinical study, Gilotrif (afatinib) inhibited proliferation and induced cell-cycle arrest and apoptosis of non-small cell lung cancer (NSCLC) cell lines with ERBB2 (HER2) amplification in culture, and inhibited tumor growth in ERBB2 (HER2)-amplified NSCLC cell line xenograft models (PMID: 26545934). 26545934
ERBB2 amp gastric adenocarcinoma predicted - sensitive Capecitabine + Lapatinib + Oxaliplatin Phase II Actionable In a Phase II trial, Tykerb (lapatinib), Xeloda (capecitabine), and Eloxatin (oxaliplatin) combination treatment resulted in a disease control rate of 81.3% (26/32, 7 complete response, 15 partial response, 4 stable disease) in patients with Erbb2 (Her2)-positive (defined as IHC3+ or IHC 2+ with ERBB2 amplification) gastric adenocarcinoma (PMID: 29409051; NCT02015169). 29409051
ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Neratinib FDA approved Actionable In a Phase III trial that supported FDA approval, ERBB2 (HER2)-positive (overexpressing and/or amplification) breast cancer patients previously treated with Herceptin (trastuzumab) demonstrated a significantly greater two year invasive disease-free survival rate (93.9%) when treated with Nerlynx (neratinib) compared to the rate (91.6%) in those patients treated with placebo (PMID: 26874901; NCT00878709). 26874901 detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Neratinib Guideline Actionable Nerlynx (neratinib) is included in guidelines for ERBB2 (HER2)-positive patients with high-risk early breast cancer (PMID: 31236598; ESMO.org). detail... 31236598
ERBB2 amp Her2-receptor positive breast cancer sensitive Docetaxel + Pertuzumab/trastuzumab/hyaluronidase-zzxf FDA approved Actionable In a Phase III trial (FeDeriCa) that supported FDA approval, Phesgo (pertuzumab/trastuzumab/hyaluronidase-zzxf) demonstrated pharmacokinetics, safety, and efficacy comparable to i.v. pertuzumab and trastuzumab (H+P) (Cancer Res 2020;80(4 Suppl):Abstract nr PD4-07; NCT03493854), warranted the extrapolation of data from a Phase III trial supporting the approval of H+P plus docetaxel in Erbb2 (Her2)-positive metastatic breast cancer (PMID: 23602601; NCT00567190) for approval of Phesgo (FDA.gov). detail... 23602601 detail... detail...
ERBB2 amp lung non-small cell carcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, Kadcyla (ado-trastuzumab emtansine) treatment demonstrated limited efficacy in patients with relapsed non-small cell lung cancer harboring ERBB2 (Her2) overexpression (n=5) or amplification (n=3), resulting in stable disease as best response in 37.5% (3/8) of the patients (PMID: 29313813). 29313813
ERBB2 amp vulva squamous cell carcinoma sensitive Depatuxizumab mafodotin Preclinical - Cell line xenograft Actionable In a preclinical study, ABT-414 demonstrated cytoxicity against a EGFR-amplified vulvar epidermoid carcinoma cell line in culture and induced tumor regression in EGFR-amplified vulvar epidermoid carcinoma cell line xenograft models (PMID: 26846818). 26846818
ERBB2 amp uterine corpus serous adenocarcinoma sensitive Trastuzumab Duocarmazine Preclinical Actionable In a preclinical study, Trastuzumab Duocarmazine (SYD895) induced cell death in ERBB2 (HER2)-amplified primary uterine serous carcinoma (USC) cell lines in culture and inhibited tumor growth and improved survival in ERBB2 (HER2)-amplified USC primary cell line xenografts (PMID: 27256376). 27256376
ERBB2 amp Her2-receptor positive breast cancer sensitive Pertuzumab + Trastuzumab Guideline Actionable The combination of Herceptin (trastuzumab) and Perjeta (pertuzumab) with a taxane, such as Taxotere (docetaxel) or Taxol (palictaxel), is included in guidelines for ERBB2 (HER2)-positive patients with early breast cancer patients or advanced breast cancer (PMID: 31236598, PMID: 30032243; ESMO.org). detail... 31236598 30032243
ERBB2 amp colorectal cancer sensitive Lapatinib + Trastuzumab Preclinical - Pdx Actionable In a preclinical study, the combination of Herceptin (trastuzumab) and Tykerb (lapatinib) treatment induced tumor regression in patient-derived colorectal cancer tumorgraft models harboring ERBB2 (HER2) amplification (PMID: 26296355). 26296355
ERBB2 amp colorectal cancer sensitive Cetuximab + Lapatinib Preclinical - Pdx Actionable In a preclinical study, the combination of Erbitux (cetuximab) and Tykerb (lapatinib) induced tumor regression in patient-derived xenograft (PDX) models of colorectal cancer with ERBB2 (HER2) amplification (PMID: 22586653). 22586653
ERBB2 amp Her2-receptor positive breast cancer sensitive Paclitaxel + Pertuzumab + Trastuzumab Guideline Actionable Perjeta (pertuzumab), Herceptin (trastuzumab), and Taxol (paclitaxel) therapy is included in the guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp duodenum adenocarcinoma predicted - sensitive Fluorouracil + Leucovorin + Oxaliplatin + Trastuzumab Case Reports/Case Series Actionable In a clinical case study, a patient with duodenal adenocarcinoma harboring ERBB2 (HER2) amplification demonstrated a complete pathologic response after treatment with a combination of Herceptin (trastuzumab), Adrucil (fluorouracil), Wellcovorin (leucovorin), and Eloxatin (oxaliplatin) (PMID: 28784859). 28784859
ERBB2 amp stomach cancer sensitive Lapatinib + Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, the combination of Herceptin (trastuzumab) and Tykerb (lapatinib) treatment induced tumor regression in ERBB2 (HER2)-amplified cell line xenograft models of gastric cancer (PMID: 26296355). 26296355
ERBB2 amp Her2-receptor positive breast cancer sensitive S63845 + Trastuzumab Preclinical - Pdx & cell culture Actionable In a preclinical study, S63845 and Herceptin (trastuzumab) demonstrated synergy in ERBB2 (HER2)-amplified breast cancer cells in culture and in ERBB2 (HER2)-amplified breast cancer patient-derived xenograft (PDX) models, resulting in enhanced tumor growth inhibition and overall survival compared to either agent alone (PMID: 28768804). 28768804
ERBB2 amp lung squamous cell carcinoma resistant Gefitinib Preclinical Actionable In a preclinical study, a lung squamous cell carcinoma cell line with ERBB2 (HER2) amplification demonstrated resistance to treatment with Iressa (gefitinib) in culture (PMID: 26545934). 26545934
ERBB2 amp Her2-receptor negative breast cancer sensitive Capecitabine + Lapatinib Guideline Actionable Tykerb (lapatinib) combined with Xeloda (capecitabine) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp breast cancer sensitive Torkinib Preclinical - Cell culture Actionable In a preclinical study, ERBB2 (HER2) amplified breast cancer cells treated with Torkinib (PP242) demonstrated some efficacy in culture including reduced phosphorylation of S6 and Akt, apoptosis, and decreased cell growth (PMID: 27197158). 27197158
ERBB2 amp salivary gland cancer predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 80% (4/5, all partial response) of patients with salivary gland cancer harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp Her2-receptor positive breast cancer sensitive Lapatinib + Trastuzumab Guideline Actionable Herceptin (trastuzumab) combined with Tykerb (lapatinib) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp breast cancer sensitive Lapatinib + Torkinib Preclinical - Cell culture Actionable In a preclinical study, the combination therapy of Tykerb (lapatinib) and Torkinib (PP242) in ERBB2 (HER2) amplified breast cancer cells in culture blocked cell growth, inhibited phosphorylation of Akt and S6, and led to greater caspase activity when compared to each agent alone (PMID: 27197158). 27197158
ERBB2 amp breast cancer decreased response Lapatinib Preclinical - Cell culture Actionable In a preclinical study, ERBB2 (HER2) amplified breast cancer cells treated with Tykerb (lapatinib) demonstrated decreased phosphorylation of Erbb2 (her2) and Akt, however, after 4-8 hours, Akt-driven Rictor showed upregulation, thereby resulting in a decreased treatment response (PMID: 27197158). 27197158
ERBB2 amp Her2-receptor positive breast cancer sensitive Trastuzumab deruxtecan Guideline Actionable Enhertu (fam-trastuzumab deruxtecan-nxki) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp breast cancer sensitive HER2 Inhibitor Elgemtumab + Neratinib Preclinical - Cell line xenograft Actionable In a preclinical study, breast cancer cell line xenograft models harboring ERBB2 (HER2) amplification were sensitive to the combination of LJM716 and Nerlynx (neratinib), resulting in a delay of brain lesion growth and improved survival (PMID: 28539475). 28539475
ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive Entinostat + Lapatinib Phase I Actionable In a Phase Ib trial, Entinostat and Tykerb (lapatinib) combination therapy resulted in complete response in 7.1% (1/14) and stable disease in 28.6% (4/14) of patients with ERBB2 (HER2)-positive breast cancer that progressed through Herceptin (trastuzumab) treatment (PMID: 31097774; NCT01434303). 31097774
ERBB2 amp Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Phase II Actionable In a Phase II trial, Gilotrif (afatinib), demonstrated safety and efficacy in various advanced solid tumor patients with ERBB2 (HER2) amplification (PMID: 23775486). 23775486
ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Capecitabine + Trastuzumab + Tucatinib FDA approved Actionable In a Phase II trial (HER2CLIMB) that supported FDA approval, addition of Tukysa (tucatinib) to Herceptin (trastuzumab) and Xeloda (capecitabine) significantly improved progression-free survival at 1 year (PFS1) compared to placebo (33.1% vs 12.3%, HR=0.54, p<0.001) in patients with metastatic ERBB2 (HER2)-positive breast cancer who received prior HER2-targeted therapy, PFS1 was significantly improved (24.9% vs 0%, HR=0.48, p<0.001) in patients with brain metastasis (PMID: 31825569; NCT02614794). detail... 31825569
ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Capecitabine + Trastuzumab + Tucatinib Guideline Actionable Tukysa (tucatinib), Herceptin (trastuzumab), and Xeloda (capecitabine) combination therapy is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp colorectal cancer decreased response Lapatinib Preclinical - Pdx Actionable In a preclinical study, treatment with Tykerb (lapatinib) resulted in initial disease stabilization with subsequent progression, in patient-derived colorectal cancer tumorgraft models with ERBB2 (HER2) amplification (PMID: 26296355). 26296355
ERBB2 amp stomach cancer predicted - sensitive HER inhibitor (Pan) Afatinib + Trastuzumab Case Reports/Case Series Actionable In a Phase II clinical trial, a gastric cancer patient with ERBB2 (HER2) amplification who progressed on previous therapy demonstrated a 22% regression in a metastatic site when treated with a combination of Gilotrif (afatinib) and Herceptin (trastuzumab) (PMID: 30463996; NCT01522768). 30463996
ERBB2 amp ovarian cancer predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 13% (1/8, all partial response) of patients with ovarian cancer harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp Her2-receptor positive breast cancer sensitive Palbociclib + Trastuzumab Preclinical Actionable In a preclinical study, the combination of Ibrance (palbociclib) and Herceptin (trastuzumab) worked synergistically to inhibit growth of ERBB2 (HER2)-amplified breast cancer cells in culture (PMID: 19874578). 19874578
ERBB2 amp breast cancer sensitive eFT226 Preclinical - Cell line xenograft Actionable In a preclinical study, eFT226 inhibited cell growth and induced apoptosis in a ERBB2 (HER2)-amplified breast cancer cell line in culture, and induced tumor regression in a cell line xenograft model (Mol Cancer Ther 2019;18(12 Suppl):Abstract nr B133). detail...
ERBB2 amp breast cancer sensitive CYH33 Preclinical - Cell culture Actionable In a preclinical study, breast cancer cell lines harboring ERBB2 (HER2) amplification demonstrated increased sensitivity to CYH33 compared to cells with normal ERBB2 (HER2) expression in culture (p<0.05) (PMID: 30003928). 30003928
ERBB2 amp stomach cancer sensitive HER2 Inhibitor TAS0728 Preclinical - Cell line xenograft Actionable In a preclinical study, TAS0728 inhibited Erbb2 downstream signaling and proliferation of ERBB2 (HER2) amplified gastric cancer cells in culture, and induced tumor regression in cell line xenograft models (PMID: 30787176). 30787176
ERBB2 amp biliary tract cancer predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 29% (2/7, all partial response) and stable disease lasting over 120 days in 38% (3/7) of patients with biliary cancer harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp uterine corpus serous adenocarcinoma sensitive Taselisib Preclinical - Cell culture Actionable In a preclinical study, a uterine serous carcinoma cell line harboring ERBB2 (HER2) amplification demonstrated sensitivity to treatment with Taselisib (GDC-0032) in culture, resulting in inhibition of cell growth (PMID: 26333383). 26333383
ERBB2 amp uterine corpus serous adenocarcinoma sensitive HER2 Inhibitor Neratinib + Taselisib Preclinical - Cell culture Actionable In a preclinical study, the combination of Taselisib (GDC-0032) and Nerlynx (neratinib) resulted in a synergistic effect, demonstrating greater cell growth inhibitory activity in uterine serous carcinoma cells harboring ERBB2 (HER2) amplification compared to either agent alone (PMID: 26333383). 26333383
ERBB2 amp breast cancer sensitive Lapatinib + S63845 Preclinical - Cell culture Actionable In a preclinical study, the combination of S63845 and Tykerb (lapatinib) resulted in potent cytotoxic effects in ERBB2 (HER2)-amplified breast cancer cells in culture compared to the cytostatic effect of Tykerb (lapatinib) alone (PMID: 27760111). 27760111
ERBB2 amp Her2-receptor positive breast cancer sensitive CDX-3379 Preclinical Actionable In a preclinical study, CDX-3379 (KTN3379) inhibited tumor growth in xenograft models of ERBB2 (HER2)-amplified breast cancer (PMID: 26880266). 26880266
ERBB2 amp gastric adenocarcinoma no benefit Lapatinib Phase III Actionable In a Phase III clinical trial, the addition of Tykerb (lapatinib) to Xeloda (capecitabine) and Eloxatin (oxaliplatin) combination treatment did not significantly prolong overall survival compared to placebo, but did improve progression-free survival and response rate in gastric adenocarcinoma patients harboring ERBB2 amplification (PMID: 26628478). 26628478
ERBB2 amp Her2-receptor positive breast cancer sensitive Trastuzumab FDA approved - On Companion Diagnostic Actionable Herceptin (trastuzumab) is FDA approved as an adjuvant treatment for ERBB2 (HER2)-overexpressing (or amplification) breast cancer patients and for metastatic ERBB2 (HER2)-overexpressing (or amplification) breast cancer patients as indicated by an FDA approved companion diagnostic (FDA.gov). detail... detail...
ERBB2 amp Her2-receptor positive breast cancer sensitive Trastuzumab Clinical Study - Meta-analysis Actionable In a meta-analysis, breast cancer patients with >12 copies of ERBB2 (HER2) had a better response to Herceptin (trastuzumab) than patients with 6-12 copies of ERBB2 (HER2) (PMID: 24691421). 24691421
ERBB2 amp Her2-receptor positive breast cancer sensitive Trastuzumab Guideline Actionable Herceptin (trastuzumab) combined with a taxane, such as Taxotere (docetaxel) or Taxol (paclitaxel), is included in guidelines as neoadjuvant therapy for ERBB2 (HER2)-positive patients with early breast cancer or as first-line therapy for ERBB2 (HER2)-positive patients with advanced breast cancer (PMID: 31236598, PMID: 30032243; ESMO.org). 31236598 detail... 30032243
ERBB2 amp colorectal cancer sensitive Lapatinib + Pertuzumab Preclinical - Pdx Actionable In a preclinical study, the combination of Perjeta (pertuzumab) and Tykerb (lapatinib) induced tumor regression in patient-derived xenograft (PDX) models of colorectal cancer with ERBB2 (HER2) amplification (PMID: 22586653). 22586653
ERBB2 amp stomach carcinoma no benefit Debio 1347 Preclinical - Cell line xenograft Actionable In a preclinical study, Debio 1347 did not inhibit tumor growth in cell line xenograft models of ERBB2 (HER2) amplified gastric carcinoma (PMID: 26438159). 26438159
ERBB2 amp colorectal adenocarcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a clinical case study, a patient with metastatic colorectal adenocarcinoma harboring ERBB2 (HER2) amplification demonstrated clinical benefit with stable disease in the primary tumor for 7 months following treatment with Kadcyla (trastuzumab emtansine) (PMID: 28040715). 28040715
ERBB2 amp breast cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited proliferation of breast cancer cell lines with ERBB2 (HER2) amplification in culture (PMID: 26545934). 26545934
ERBB2 amp breast cancer sensitive HER2 Inhibitor Neratinib + Pertuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, breast cancer cell line xenograft models harboring ERBB2 (HER2) amplification were sensitive to the combination of Perjeta (pertuzumab) and Nerlynx (neratinib), resulting in a delay of brain lesion growth and improved survival (PMID: 28539475). 28539475
ERBB2 amp uterine corpus serous adenocarcinoma sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, a uterine serous carcinoma cell line harboring ERBB2 (HER2) amplification demonstrated sensitivity to treatment with Nerlynx (neratinib) in culture, resulting in inhibition of cell growth (PMID: 26333383). 26333383
ERBB2 amp Her2-receptor positive breast cancer sensitive Capecitabine + Trastuzumab Guideline Actionable Herceptin (trastuzumab) combined with Xeloda (capecitabine) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp breast cancer sensitive HER inhibitor (Pan) Dacomitinib Preclinical Actionable In a preclinical study, Vizimpro (dacomitinib) was more effective in preventing proliferation in ERBB2 (HER2) amplified breast cancer cells than in wild-type ERBB2 (HER2) breast cancer cells (PMID: 22761403). 22761403
ERBB2 amp Advanced Solid Tumor predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 26% (30/114, 2 complete response, 28 partial response) and stable disease lasting over 120 days in 14% (16/114) of patients with advanced solid tumors harboring ERBB2 (HER2) amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 amp Her2-receptor positive breast cancer sensitive Docetaxel + Trastuzumab Guideline Actionable Herceptin (trastuzumab) combined with Taxotere (docetaxel) is included in guidelines as systemic therapy for patients with recurrent or metastatic hormone receptor-positive (ER and/or PR) or negative, ERBB2 (HER2)-positive breast cancer (NCCN.org). detail...
ERBB2 amp gastroesophageal junction adenocarcinoma no benefit Lapatinib Phase III Actionable In a Phase III clinical trial, the addition of Tykerb (lapatinib) to Xeloda (capecitabine) and Eloxatin (oxaliplatin) combination treatment did not significantly prolong overall survival compared to placebo, but did improve progression-free survival and response rate in gastroesophageal junction adenocarcinoma patients harboring ERBB2 amplification (PMID: 26628478). 26628478
ERBB2 amp FGFR2 wild-type stomach cancer resistant AZD4547 Preclinical Actionable In a preclinical study, gastric cancer cells with wild-type FGFR2 and ERBB2 (HER2) amplification were resistant to treatment with AZD4547 in culture (PMID: 22869148). 22869148
ERBB2 amp PIK3CA C420R breast cancer sensitive CYH33 Preclinical - Cell culture Actionable In a preclinical study, CYH33 inhibited proliferation of breast cancer cell lines harboring PIK3CA C420R and ERBB2 (HER2) amplification in culture (PMID: 30003928). 30003928
ERBB2 amp PIK3CA C420R breast cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of a breast cancer cell line harboring PIK3CA C420R and ERBB2 (HER2) amplification (PMID: 21558396). 21558396
ERBB2 amp PIK3CA N345K breast cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of a breast cancer cell line harboring PIK3CA N345K and ERBB2 (HER2) amplification in culture (PMID: 21558396). 21558396
ERBB2 amp PIK3CA H1047R ovarian cancer sensitive CH5132799 Preclinical - Cell line xenograft Actionable In a preclinical study, CH5132799 inhibited cell growth in a human ovarian cancer cell line harboring PIK3CA H1047R and ERBB2 (HER2) amplification, and inhibited tumor growth in xenograft models (PMID: 21558396). 21558396
ERBB2 amp PIK3CA H1047R breast cancer sensitive CH5132799 Preclinical - Cell line xenograft Actionable In a preclinical study, CH5132799 inhibited cell growth and Akt phosphorylation, and promoted apoptosis in a human breast cancer cell line harboring PIK3CA H1047R and ERBB2 (HER2) amplification, and inhibited tumor growth in xenograft models (PMID: 21558396). 21558396
ERBB2 amp PIK3CA H1047R breast cancer sensitive CYH33 Preclinical - Cell culture Actionable In a preclinical study, CYH33 inhibited proliferation of breast cancer cell lines harboring PIK3CA H1047R and ERBB2 (HER2) amplification in culture (PMID: 30003928). 30003928
ERBB2 amp PIK3CA H1047R breast cancer sensitive CH5132799 + Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, the combination of CH5132799 and Herceptin (trastuzumab) inhibited tumor growth and overcame Herceptin (trastuzumab) insensitivity in xenograft models of a human breast cancer cell line harboring PIK3CA H1047R and ERBB2 (HER2) amplification (PMID: 21558396). 21558396
ERBB2 amp PIK3CA H1047R breast cancer sensitive Gedatolisib Preclinical Actionable In a preclinical study, Gedatolisib (PKI-587) inhibited growth of human breast cancer cells harboring ERBB2 (HER2) amplification and PIK3CA H1047R in culture (PMID: 21325073, PMID: 17314276). 17314276 21325073
ERBB2 amp PIK3CA K111N breast cancer predicted - sensitive CYH33 Preclinical - Cell culture Actionable In a preclinical study, CYH33 inhibited proliferation of a breast cancer cell line harboring PIK3CA K111N and ERBB2 (HER2) amplification in culture (PMID: 30003928). 30003928
ERBB2 amp PIK3CA K111N breast cancer sensitive CH5132799 Preclinical - Cell line xenograft Actionable In a preclinical study, CH5132799 inhibited cell growth and Akt phosphorylation, and promoted apoptosis in a human breast cancer cell line harboring PIK3CA K111N and ERBB2 (HER2) amplification, and inhibited tumor growth in xenograft models (PMID: 21558396). 21558396
ERBB2 amp PIK3CA E545K breast cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of a breast cancer cell line harboring PIK3CA E545K and ERBB2 (HER2) amplification in culture (PMID: 21558396). 21558396
ERBB2 amp PIK3CA E545K breast cancer predicted - sensitive CYH33 Preclinical - Cell culture Actionable In a preclinical study, CYH33 inhibited proliferation of a breast cancer cell line harboring PIK3CA E545K and ERBB2 (HER2) amplification in culture (PMID: 30003928). 30003928
ERBB2 amp PIK3CA E545K breast cancer sensitive Buparlisib Preclinical - Cell line xenograft Actionable In a preclinical study, a breast cancer cell line xenograft model co-harboring ERBB2 (HER2) amplification and PIK3CA E545K demonstrated tumor regression within the mammary fat pad when treated with Buparlisib (BKM120) (PMID: 28539475). 28539475
ERBB2 amp PIK3CA E545K PIK3CA K567R Her2-receptor positive breast cancer sensitive Gedatolisib Preclinical - Cell line xenograft Actionable In a preclinical study, Gedatolisib (PKI-587) inhibited PI3K signaling, cell growth and induced apoptosis in human breast cancer cells harboring ERBB2 (HER2) amplification, PIK3CA E545K, and PIK3CA K567R in culture and in cell line xenografts (PMID: 21325073, PMID: 17314276). 17314276 21325073
ERBB2 amp PIK3CA mut Her2-receptor positive breast cancer sensitive Ipatasertib Preclinical - Cell line xenograft Actionable In a preclinical study, ERBB2 (HER2)-receptor positive breast cancer cell line xenograft models harboring amplification of ERBB2 (HER2) and a PIK3CA mutation demonstrated sensitivity to treatment with Ipatasertib (GDC-0068), resulting in inhibition of tumor growth (PMID: 24141624). 24141624
ERBB2 amp PIK3CA mut uterine corpus serous adenocarcinoma sensitive HER2 Inhibitor Neratinib + Taselisib Preclinical - Cell line xenograft Actionable In a preclinical study, the combination of Nerlynx (neratinib) and Taselisib (GDC-0032), compared to either agent alone, resulted in greater inhibition of cell cycle activity in a uterine serous carcinoma cell line harboring ERBB2 (HER2) amplification and a PIK3CA mutation in culture, and in xenograft models, showed increased tumor growth inhibition and tumor regression (PMID: 26333383). 26333383
ERBB2 amp PIK3CA mut breast cancer sensitive CUDC-907 Preclinical Actionable In a preclinical study, CUDC-907 inhibited downstream signaling and growth of PIK3CA-mutant breast cancer cells with ERBB2 amplification in culture (PMID: 22693356). 22693356
ERBB2 amp PIK3CA mut Her2-receptor positive breast cancer sensitive Copanlisib Preclinical - Cell line xenograft Actionable In a preclinical study, Aliqopa (copanlisib) promoted tumor regression in xenograft models of a human ERBB2 (HER2)-amplified breast cancer cell line harboring a PIK3CA activating mutation (PMID: 24170767). 24170767
ERBB2 T798M ERBB2 amp breast cancer resistant Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, a human ERBB2-amplified breast cancer cell line expressing ERBB2 (HER2) T798M was resistant to Herceptin (trastuzumab) in culture and in xenograft models (PMID: 23948973). 23948973
ERBB2 L866M ERBB2 amp colorectal cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) treatment resulted in stable tumor size in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) L866M and ERBB2 (HER2) amplification (PMID: 26243863). 26243863
ERBB2 L866M ERBB2 amp colorectal cancer resistant Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) had no effect on tumor growth in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) L866M and ERBB2 (HER2) amplification (PMID: 26243863). 26243863
ERBB2 L866M ERBB2 amp colorectal cancer resistant Cetuximab Preclinical Actionable In a preclinical study, xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) L866M and ERBB2 (HER2) amplification were resistant to Erbitux (cetuximab) (PMID: 26243863). 26243863
ERBB2 L866M ERBB2 amp colorectal cancer sensitive HER2 Inhibitor Neratinib + Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) and Nerlynx (neratinib) combination treatment resulted in sustained tumor regression in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) L866M and ERBB2 (HER2) amplification (PMID: 26243863). 26243863
ERBB2 amp ERBB2 over exp stomach cancer sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell line xenograft Actionable In a preclinical study, Gilotrif (afatinib) induced tumor regression in a gastric cancer cell line xenograft model with HER2 (ERBB2) amplification and over expression (PMID: 23578997). 23578997
ERBB2 amp ERBB2 over exp lung non-small cell carcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, a non-small cell lung cancer patient with ERBB2 overexpression (IHC 3+) and ERBB2 amplification demonstrated a partial response when treated with Kadcyla (ado-trastuzumab emtansine), with a duration of response of 8.3 months, a progression-free survival of 9.6 months, and an overall survival of 21.6 months (PMID: 30206164; NCT02289833). 30206164
ERBB2 amp ERBB2 over exp stomach cancer sensitive Ado-trastuzumab emtansine Preclinical - Cell line xenograft Actionable In a preclinical study, Kadcyla (trastuzumab emtansine) inhibited tumor growth in human cell line xenograft models of gastric cancer with ERBB2 (HER2) amplification and over expression (PMID: 21458915). 21458915
ERBB2 amp PIK3CA wild-type uterine corpus serous adenocarcinoma sensitive Taselisib Preclinical - Cell line xenograft Actionable In a preclinical study, Taselisib (GDC-0032) did not result in delay of cell cycle activity during treatment of a uterine serous carcinoma cell line harboring PIK3CA wild-type and ERBB2 (HER2) amplification in culture, however, did result in tumor growth inhibition in xenograft models (PMID: 26333383). 26333383
ERBB2 amp PIK3CA wild-type Her2-receptor positive breast cancer predicted - sensitive HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial, the presence of high ERBB2 (HER2) copy number and wild-type PIK3CA correlated with improved progression-free survival (HR=0.45, p=0.024) in patients with metastatic Erbb2 (Her2)-positive (amplification or overexpression) breast cancer treated with Poziotinib (HM781-36B) (PMID: 30720867, NCT02418689). 30720867
ERBB2 amp PIK3CA wild-type uterine corpus serous adenocarcinoma sensitive HER2 Inhibitor Neratinib + Taselisib Preclinical - Cell culture Actionable In a preclinical study, the combination of Taselisib (GDC-0032) and Nerlynx (neratinib) delayed cell cycle activity in a uterine serous carcinoma cell line harboring PIK3CA wild-type and ERBB2 (HER2) amplification in culture (PMID: 26333383). 26333383
ERBB2 amp PIK3CA wild-type uterine corpus serous adenocarcinoma sensitive HER2 Inhibitor Neratinib Preclinical - Cell line xenograft Actionable In a preclinical study, Nerlynx (neratinib) delayed cell cycle activity during treatment of a uterine serous carcinoma cell line harboring PIK3CA wild-type and ERBB2 (HER2) amplification in culture, and inhibited tumor growth in xenograft models (PMID: 26333383). 26333383
ARID1A loss ERBB2 amp breast cancer sensitive MK2206 + Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line with ARID1A loss and harboring ERBB2 (HER2) amplification demonstrated restored sensitivity to Herceptin (trastuzumab) when additionally treated with MK2206 in culture (PMID: 27172896). 27172896
ERBB2 amp FGFR2 amp esophagus adenocarcinoma sensitive AZD4547 + Lapatinib Preclinical - Cell culture Actionable In a preclinical study, the combination of AZD-4547 and Tykerb (lapatinib) worked synergistically to inhibit growth of an esophageal adenocarcinoma cell line with ERBB2 (HER2) and FGFR2 amplification in culture (PMID: 27595477). 27595477
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, breast cancer cell lines with ERBB2 (HER2) amplification and expressing ERBB2 L755S demonstrated decreased inhibition of ERBB2 (HER2) signaling and proliferation compared to cells expressing wild-type ERBB2 (HER2) following treatment with Tykerb (lapatinib) (PMID: 30301790). 30301790
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer resistant Lapatinib Preclinical - Cell line xenograft Actionable In a preclinical study, ERBB2 (HER2) L755S was associated with reactivation of ERBB2 (HER2) signaling and acquired resistance to Tykerb (lapatinib) in ESR1-positive/ERBB2 (HER2)-positive breast cancer cell lines with ERBB2 amplification in culture and in xenograft models (PMID: 28487443). 28487443
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer decreased response Ado-trastuzumab emtansine Preclinical - Cell culture Actionable In a preclinical study, expression of ERBB2 (HER2) L755S resulted in decreased sensitivity to treatment with Kadcyla (trastuzumab emtansine) in ESR1-positive/ERBB2 (HER2)-positive breast cancer cells with ERBB2 amplification in culture (PMID: 28487443). 28487443
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell line xenograft Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of ESR1-positive/ERBB2 (HER2)-positive breast cancer cell lines with ERBB2 amplification and harboring ERBB2 L755S in culture, and inhibited tumor growth in xenograft models (PMID: 28487443). 28487443
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer decreased response Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, breast cancer cell lines with ERBB2 (HER2) amplification and expressing ERBB2 L755S demonstrated decreased inhibition proliferation compared to cells expressing wild-type ERBB2 (HER2) following treatment with Herceptin (trastuzumab) (PMID: 30301790). 30301790
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer resistant Pertuzumab + Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, expression of ERBB2 (HER2) L755S conferred resistance to Perjeta (pertuzumab) plus Herceptin (trastuzumab) combination therapy in ESR1-positive/ERBB2 (HER2)-positive breast cancer cells with ERBB2 amplification in culture (PMID: 28487443). 28487443
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer resistant Lapatinib + Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, expression of ERBB2 (HER2) L755S conferred resistance to Tykerb (lapatinib) plus Herceptin (trastuzumab) combination therapy in ESR1-positive/ERBB2 (HER2)-positive breast cancer cells with ERBB2 amplification in culture (PMID: 28487443). 28487443
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer resistant Lapatinib + Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, breast cancer cell lines with ERBB2 (HER2) amplification and expressing ERBB2 L755S demonstrated decreased inhibition proliferation compared to cells expressing wild-type ERBB2 (HER2) following treatment with Herceptin (trastuzumab) and Tykerb (lapatinib) (PMID: 30301790). 30301790
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of ESR1-positive/ERBB2 (HER2)-positive breast cancer cell lines with ERBB2 amplification and harboring ERBB2 L755S in culture (PMID: 28487443). 28487443
ERBB2 L755S ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a clinical study, Nerlynx (neratinib) treatment resulted in partial response in 2 of 6 and disease stabilization in 4 of 6 breast cancer patients with ERBB2 (HER2) amplification and an ERBB2 (HER2) mutation, including stable disease in a patient harboring ERBB2 (HER2) L755S, and breast cancer cell lines with ERBB2 (HER2) amplification and expressing ERBB2 (HER2) L755S demonstrated sensitivity to Nerlynx (neratinib) in culture (PMID: 30301790). 30301790
ERBB2 amp SRC E527K gastroesophageal junction adenocarcinoma sensitive Lapatinib + Saracatinib Preclinical - Cell culture Actionable In a preclinical study, the combination of Tykerb (lapatinib) and Saracatinib (AZD0530) inhibited growth of ERBB2 (HER2)-amplified gastroesophageal adenocarcinoma cells harboring SRC E527K in culture (PMID: 25350844). 25350844
ERBB2 amp SRC E527K gastroesophageal junction adenocarcinoma resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, an ERBB2 (HER2)-amplified gastroesophageal cancer cell line initially sensitive to treatment with Tykerb (lapatinib) in culture developed resistance and was subsequently found to have acquired a secondary drug resistant mutation, SRC E527K (PMID: 25350844). 25350844
ROS1 fusion ERBB2 amp NOTCH1 amp SRC amp STK11 amp lung non-small cell carcinoma predicted - resistant Crizotinib Case Reports/Case Series Actionable In a clinical study, a non-small cell lung carcinoma patient harboring a ROS1 fusion treated with Xalkori (crizotinib) responded, but eventually progressed, and was subsequently found to harbor presumed resistance alterations, including amplification of SRC, ERBB2 (HER2), STK11, and NOTCH1 (PMID: 29636358). 29636358
ROS1 fusion ERBB2 amp FGFR3 amp RET amp lung non-small cell carcinoma predicted - resistant Crizotinib Case Reports/Case Series Actionable In a clinical study, a non-small cell lung carcinoma patient harboring a ROS1 fusion treated with Xalkori (crizotinib) responded, but eventually progressed, and was subsequently found to harbor presumed resistance alterations, including amplification of ERBB2 (HER2), FGFR3, and RET (PMID: 29636358). 29636358
ERBB2 S310F ERBB2 amp lung adenocarcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall responses of partial response in 44% (8/18) and stable disease in 39% (7/18), and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations; a patient harboring ERBB2 (HER2) S310F and ERBB2 (HER2) amplification had a partial response (PMID: 29989854; NCT02675829). 29989854
ERBB2 Y772_A775dup ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a clinical study, Nerlynx (neratinib) treatment resulted in partial response in 2 of 6 and disease stabilization in 4 of 6 breast cancer patients with ERBB2 (HER2) amplification and an ERBB2 (HER2) mutation, including stable disease in a patient harboring ERBB2 (HER2) Y772_A775dup (PMID: 30301790). 30301790
ERBB2 D769Y ERBB2 amp Her2-receptor positive breast cancer sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a clinical study, Nerlynx (neratinib) treatment resulted in partial response in 2 of 6 and disease stabilization in 4 of 6 breast cancer patients with ERBB2 (HER2) amplification and an ERBB2 (HER2) mutation, including stable disease in a patient harboring ERBB2 (HER2) D769Y, and Nerlynx (neratinib) inhibited tumor growth in a breast cancer patient-derived xenograft (PDX) model with ERBB2 (HER2) amplification and ERBB2 (HER2) D769Y (PMID: 30301790). 30301790
ERBB2 D769Y ERBB2 amp Her2-receptor positive breast cancer resistant Lapatinib Preclinical - Pdx Actionable In a preclinical study, a breast cancer patient-derived xenograft (PDX) model with ERBB2 (HER2) amplification and ERBB2 D769Y was refractory to treatment with Tykerb (lapatinib) (PMID: 30301790). 30301790
ERBB2 D769Y ERBB2 amp Her2-receptor positive breast cancer resistant Trastuzumab Preclinical - Pdx Actionable In a preclinical study, a breast cancer patient-derived xenograft (PDX) model with ERBB2 (HER2) amplification and ERBB2 D769Y was refractory to treatment with Herceptin (trastuzumab) (PMID: 30301790). 30301790
ERBB2 V777L ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a clinical study, Nerlynx (neratinib) treatment resulted in partial response in 2 of 6 and disease stabilization in 4 of 6 breast cancer patients with ERBB2 (HER2) amplification and an ERBB2 (HER2) mutation, including partial response in a patient harboring ERBB2 (HER2) V777L (PMID: 30301790). 30301790
ERBB2 L313I ERBB2 amp Her2-receptor positive breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a clinical study, Nerlynx (neratinib) treatment resulted in partial response in 2 of 6 and disease stabilization in 4 of 6 breast cancer patients with ERBB2 (HER2) amplification and an ERBB2 (HER2) mutation, including partial response in a patient harboring ERBB2 (HER2) L313I (PMID: 30301790). 30301790
ERBB2 amp PIK3CA act mut Her2-receptor positive breast cancer decreased response HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial, the presence of PIK3CA activating mutations including E542X, E545X, and H1047X correlated with shorter progression-free survival (2.66 months) compared to PIK3CA wild-type or other mutations (4.24 month, HR=1.68, p=0.033) in patients with metastatic Erbb2 (Her2)-positive (amplification or overexpression) breast cancer treated with Poziotinib (HM781-36B) (PMID: 30720867, NCT02418689). 30720867
ERBB2 amp PIK3CA E542X Her2-receptor positive breast cancer decreased response HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial, the presence of PIK3CA activating mutations including E542X, E545X, and H1047X correlated with shorter progression-free survival (2.66 months) compared to PIK3CA wild-type or other mutations (4.24 month, HR=1.68, p=0.033) in patients with metastatic Erbb2 (Her2)-positive (amplification or overexpression) breast cancer treated with Poziotinib (HM781-36B) (PMID: 30720867, NCT02418689). 30720867
ERBB2 amp PIK3CA H1047X Her2-receptor positive breast cancer decreased response HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial, the presence of PIK3CA activating mutations including E542X, E545X, and H1047X correlated with shorter progression-free survival (2.66 months) compared to PIK3CA wild-type or other mutations (4.24 month, HR=1.68, p=0.033) in patients with metastatic Erbb2 (Her2)-positive (amplification or overexpression) breast cancer treated with Poziotinib (HM781-36B) (PMID: 30720867, NCT02418689). 30720867
ERBB2 amp PIK3CA E545X Her2-receptor positive breast cancer decreased response HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial, the presence of PIK3CA activating mutations including E542X, E545X, and H1047X correlated with shorter progression-free survival (2.66 months) compared to PIK3CA wild-type or other mutations (4.24 month, HR=1.68, p=0.033) in patients with metastatic Erbb2 (Her2)-positive (amplification or overexpression) breast cancer treated with Poziotinib (HM781-36B) (PMID: 30720867, NCT02418689). 30720867
BRAF wild-type ERBB2 amp NRAS wild-type colon cancer sensitive Pertuzumab + Trastuzumab Guideline Actionable Herceptin (trastuzumab) in combination with Perjeta (pertuzumab) is included in guidelines as second-line therapy for advanced or metastatic colon cancer patients with ERBB2 amplification and NRAS, BRAF wild-type (NCCN.org). detail...
BRAF wild-type ERBB2 amp NRAS wild-type rectum cancer sensitive Lapatinib + Trastuzumab Guideline Actionable Herceptin (trastuzumab) in combination with Tykerb (lapatinib) is included in guidelines as second-line therapy for advanced or metastatic rectum cancer patients with ERBB2 amplification and wild-type NRAS and BRAF (NCCN.org). detail...
BRAF wild-type ERBB2 amp NRAS wild-type colon cancer sensitive Lapatinib + Trastuzumab Guideline Actionable Herceptin (trastuzumab) in combination with Tykerb (lapatinib) is included in guidelines as second-line therapy for advanced or metastatic colon cancer patients with ERBB2 amplification and NRAS, BBRAF wild-type (NCCN.org). detail...
BRAF wild-type ERBB2 amp NRAS wild-type rectum cancer sensitive Pertuzumab + Trastuzumab Guideline Actionable Herceptin (trastuzumab) in combination with Perjeta (pertuzumab) is included in guidelines as second-line therapy for advanced or metastatic rectum cancer patients with ERBB2 amplification and wild-type NRAS and BRAF (NCCN.org). detail...
ERBB2 amp ERBB2 over exp ERBB2 rearrange lung non-small cell carcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, a non-small cell lung cancer patient with ERBB2 overexpression (IHC 3+), ERBB2 amplification, and an ERBB2 rearrangement demonstrated a partial response when treated with Kadcyla (ado-trastuzumab emtansine), with a duration of response of 10.8 months, a progression-free survival of 12.2 months, and an overall survival of 12.9 months (PMID: 30206164; NCT02289833). 30206164
ERBB2 G778_P780dup ERBB2 amp lung adenocarcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a clinical case study, Pyrotinib treatment resulted in 11 months of stable disease in a lung adenocarcinoma patient harboring ERBB2 (HER2) G778_P780dup (also reported as V777_G778insGSP) and ERBB2 (HER2) amplification (PMID: 32036069). 32036069
ERBB2 G778_P780dup ERBB2 amp lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Dacomitinib Case Reports/Case Series Actionable In a clinical case study, a patient with metastatic lung adenocarcinoma harboring ERBB2 (HER2) G778_P780dup (also reported as P780_Y781insGSP) demonstrated an ongoing partial response following four months of Vizimpro (dacomitinib) treatment (PMID: 32036069). 32036069
ERBB2 L663P Advanced Solid Tumor no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P did not benefit from treatment with Tarceva (erlotinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 L663P Advanced Solid Tumor no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P did not benefit from treatment with Iressa (gefitinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 L663P Advanced Solid Tumor predicted - sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P demonstrated decreased cell proliferation and reduced survival when treated with Nerlynx (neratinib) in culture (PMID: 30449325). 30449325
ERBB2 L663P Advanced Solid Tumor predicted - resistant Cetuximab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P demonstrated resistance to treatment with Erbitux (cetuximab) in culture (PMID: 30449325). 30449325
ERBB2 L663P Advanced Solid Tumor predicted - sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P demonstrated decreased cell proliferation and reduced survival when treated with Gilotrif (afatinib) in culture (PMID: 30449325). 30449325
ERBB2 L663P Advanced Solid Tumor predicted - sensitive Pertuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P demonstrated decreased cell proliferation and reduced survival when treated with Perjeta (pertuzumab) in culture (PMID: 30449325). 30449325
ERBB2 L663P Advanced Solid Tumor predicted - sensitive Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P demonstrated decreased cell proliferation and reduced survival when treated with Herceptin (trastuzumab) in culture (PMID: 30449325). 30449325
ERBB2 L663P Advanced Solid Tumor predicted - sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L663P demonstrated decreased cell proliferation and reduced survival when treated with Tykerb (lapatinib) in culture (PMID: 30449325). 30449325
ERBB2 V777L Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L breast cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 V777L reverted to normal morphology in culture upon Herceptin (trastuzumab) treatment (PMID: 23220880). 23220880
ERBB2 V777L Advanced Solid Tumor sensitive HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L colorectal cancer resistant Cetuximab Preclinical - Pdx Actionable In a preclinical study, human colorectal cancer cells over expressing ERBB2 (HER2) V777L were resistant to Erbitux (cetuximab) in culture and in patient-derived xenograft models (PMID: 26243863). 26243863
ERBB2 V777L breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) V777L demonstrated growth inhibition when treated with Nerlynx (neratinib) (PMID: 23220880). 23220880
ERBB2 V777L biliary tract cancer conflicting HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in partial response with a progression-free survival of 3.6 months in one patient, and progressive disease with a progression-free survival of 0.8 months in another patient with biliary tract cancer harboring ERBB2 (HER2) V777L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V777L breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 V777L demonstrated growth inhibition when treated with Tykerb (lapatinib) (PMID: 23220880). 23220880
ERBB2 V777L lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, a non-small cell lung cancer patient harboring ERBB2 (HER2) V777L who had received prior platinum-based chemotherapy demonstrated a partial response when treated with Pyrotinib (PMID: 32614698; NCT02834936). 32614698
ERBB2 V777L gastroesophageal junction adenocarcinoma predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.1 months in a patient with gastroesophageal cancer harboring ERBB2 (HER2) V777L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V777L colon cancer resistant Trastuzumab Preclinical Actionable In a preclinical study, transformed mouse colon epithelial cells over expressing ERBB2 (HER2) V777L were resistant to Herceptin (trastuzumab) in culture (PMID: 26243863). 26243863
ERBB2 V777L colorectal cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) V777L in culture (PMID: 26243863). 26243863
ERBB2 V777L colorectal cancer sensitive HER2 Inhibitor Neratinib + Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, Herceptin (trastuzumab) and Nerlynx (neratinib) combination treatment inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) V777L in culture and suppressed tumor growth in cell line xenograft models (PMID: 26243863). 26243863
ERBB2 V777L Advanced Solid Tumor sensitive HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, Imbruvica (ibrutinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L Advanced Solid Tumor sensitive HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, transformed cell lines expressing ERBB2 (HER2) V777L demonstrated growth inhibition when treated with AEE788 in culture (PMID: 22046346). 22046346
ERBB2 V777L Her2-receptor negative breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in partial response in one patient, and progressive disease in 4 patient with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) V777L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V777L lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a retrospective study, Gilotrif (afatinib) treatment resulted in a partial response in a patient with lung adenocarcinoma harboring ERBB2 (HER2) V777L (PMID: 32162827). 32162827
ERBB2 V777L colon cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited colony formation in transformed mouse colon epithelial cells over expressing ERBB2 (HER2) V777L in culture (PMID: 26243863). 26243863
ERBB2 V777L Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V777L were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 V777L Advanced Solid Tumor sensitive Osimertinib Preclinical - Cell culture Actionable In a preclinical study, Tagrisso (osimertinib) inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L endometrial cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 6.9 months in a patient with endometrial cancer harboring ERBB2 (HER2) V777L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V777L colorectal cancer conflicting HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.4 months in a patient with colorectal cancer harboring ERBB2 (HER2) V777L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V777L colorectal cancer conflicting HER2 Inhibitor Neratinib Preclinical - Cell line xenograft Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) V777L in culture and suppressed tumor growth in cell line xenograft models (PMID: 26243863). 26243863
ERBB2 V777L Advanced Solid Tumor sensitive Nazartinib Preclinical - Cell culture Actionable In a preclinical study, Nazartinib (EGF816) inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L breast cancer predicted - sensitive Trastuzumab + Vinorelbine Case Reports/Case Series Actionable In a clinical case study, the combination of Navelbine (vinorelbine) and Herceptin (trastuzumab) resulted in a partial response with tumor regression in a breast cancer patient harboring ERBB2 (HER2) V777L (PMID: 31118664). 31118664
ERBB2 V777L colorectal cancer resistant Panitumumab Preclinical Actionable In a preclinical study, colorectal cancer cells over expressing ERBB2 (HER2) V777L were resistant to Vectibix (panitumumab) in culture (PMID: 26243863). 26243863
ERBB2 V777L Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) V777L in culture (PMID: 31588020). 31588020
ERBB2 V777L urinary bladder cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 6.9 months in a patients with bladder cancer harboring ERBB2 (HER2) V777L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V777L Advanced Solid Tumor conflicting Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V777L were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 V777L Advanced Solid Tumor conflicting Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) V777L in culture (PMID: 22046346). 22046346
ERBB2 L755S ERBB2 V777L ERBB2 R1153* urinary bladder cancer no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.7 months in a patient with bladder cancer harboring ERBB2 (HER2) L755S, R1153*, and V777L (PMID: 29420467; NCT01953926). 29420467
ERBB2 V777L PIK3CA H1047R breast cancer resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring ERBB2 (HER2) V777L and PIK3CA H1047R demonstrated resistance to Nerlynx (neratinib) in culture (PMID: 31978326). 31978326
ERBB2 V777L PIK3CA H1047R breast cancer sensitive HER2 Inhibitor Everolimus + Neratinib Preclinical - Cell culture Actionable In a preclinical study, Afinitor (everolimus) and Nerlynx (neratinib) worked synergistically to inhibit viability of a breast cancer cell line harboring ERBB2 (HER2) V777L and PIK3CA H1047R in culture (PMID: 31978326). 31978326
ERBB2 Q709L Advanced Solid Tumor predicted - sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Q709L demonstrated decreased cell proliferation and reduced survival when treated with Tykerb (lapatinib) in culture (PMID: 30449325). 30449325
ERBB2 Q709L Advanced Solid Tumor no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Q709L did not benefit from treatment with Iressa (gefitinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 Q709L Advanced Solid Tumor predicted - sensitive Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Q709L demonstrated decreased cell proliferation and reduced survival when treated with Herceptin (trastuzumab) in culture (PMID: 30449325). 30449325
ERBB2 Q709L Advanced Solid Tumor predicted - sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Q709L demonstrated decreased cell proliferation and reduced survival when treated with Gilotrif (afatinib) in culture (PMID: 30449325). 30449325
ERBB2 Q709L Advanced Solid Tumor predicted - resistant Cetuximab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Q709L demonstrated resistance to treatment with Erbitux (cetuximab) in culture (PMID: 30449325). 30449325
ERBB2 Q709L Advanced Solid Tumor no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Q709L did not benefit from treatment with Tarceva (erlotinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 Q709L Advanced Solid Tumor predicted - sensitive Pertuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Q709L demonstrated decreased cell proliferation and reduced survival when treated with Perjeta (pertuzumab) in culture (PMID: 30449325). 30449325
ERBB2 L755P Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 L755P Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Vizimpro (dacomitinib) in culture (PMID: 31588020). 31588020
ERBB2 L755P lung adenocarcinoma no benefit Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall responses of partial response in 44% (8/18) and stable disease in 39% (7/18), and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations, but a subset of patients specifically harboring ERBB2 L755P (2/2) did not demonstrate a partial response (PMID: 29989854; NCT02675829). 29989854
ERBB2 L755P Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 L755P Advanced Solid Tumor resistant HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, transformed cell lines expressing ERBB2 (HER2) L755P demonstrated resistance when treated with AEE788 in culture (PMID: 22046346). 22046346
ERBB2 L755P Advanced Solid Tumor resistant HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Gilotrif (afatinib) in culture (PMID: 31588020). 31588020
ERBB2 L755P Advanced Solid Tumor resistant HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Imbruvica (ibrutinib) in culture (PMID: 31588020). 31588020
ERBB2 L755P lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Case Reports/Case Series Actionable In a Phase II trial, Poziotinib (HM781-36B) treatment resulted in stable disease lasted more than 7 months in a patient with non-small cell lung cancer harboring ERBB2 (HER2) L755P (PMID: 31588020; NCT03066206). 31588020
ERBB2 L755P Advanced Solid Tumor resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Nerlynx (neratinib) in culture (PMID: 31588020). 31588020
ERBB2 L755P Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 L755P Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cell lines expressing ERBB2 (HER2) L755P demonstrated resistance when treated with Tykerb (lapatinib) in culture (PMID: 22046346). 22046346
ERBB2 L755P Advanced Solid Tumor resistant Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 L755P Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) L755P in culture (PMID: 31588020). 31588020
ERBB2 L755P Advanced Solid Tumor resistant HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755P were resistant to Pyrotinib in culture (PMID: 31588020). 31588020
ERBB2 L755P lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, Pyrotinib treatment resulted in an objective response rate of 25% (1/4) in non-small cell lung cancer patients harboring ERBB2 (HER2) L755P who had received prior platinum-based chemotherapy (PMID: 32614698; NCT02834936). 32614698
ERBB2 L755P lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, a patient with non-small cell lung cancer harboring ERBB2 L755P demonstrated a partial response when treated with Pyrotinib (PMID: 30596880; NCT02535507). 30596880
ERBB2 L755P Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) L755P in culture (PMID: 31588020). 31588020
ERBB2 L755P lung non-small cell carcinoma no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 14.8 months in a patient with non-small cell lung cancer harboring ERBB2 (HER2) L755P (PMID: 29420467; NCT01953926). 29420467
ERBB2 L755P Advanced Solid Tumor sensitive WZ4002 Preclinical Actionable In a preclinical study, WZ4002 inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) L755P in culture (PMID: 22046346). 22046346
ERBB2 L755P Advanced Solid Tumor sensitive EKI-785 Preclinical Actionable In a preclinical study, EKI-285 (CL-387785) inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) L755P in culture (PMID: 22046346). 22046346
ERBB2 G292R urinary bladder cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.7 months in a patient with bladder cancer harboring both ERBB2 (HER2) G292R (PMID: 29420467; NCT01953926). 29420467
ERBB2 L755_E757delinsS Her2-receptor negative breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in partial response with a progression-free survival of 9.0 months in a patient with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) L755_E757delinsS (PMID: 29420467; NCT01953926). 29420467
ERBB2 L755A lung non-small cell carcinoma no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 3.6 months in a patient with non-small cell lung cancer harboring ERBB2 (HER2) L755A (PMID: 29420467; NCT01953926). 29420467
ERBB2 P780_Y781insGSP lung non-small cell carcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, Kadcyla (ado-trastuzumab emtansine) treatment demonstrated limited efficacy in patients with relapsed non-small cell lung cancer harboring ERBB2 (Her2) mutations, resulting in stable disease in a patient harboring ERBB2 (HER2) P780_Y781insGSP (PMID: 29313813). 29313813
ERBB2 P780_Y781insGSP lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, a patient with non-small cell lung cancer harboring ERBB2 P780_Y781insGSP demonstrated stable disease and progression-free survival for more than one year when treated with Pyrotinib (PMID: 30596880; NCT02535507). 30596880
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) demonstrated decreased response to Vizimpro (dacomitinib) compared to Poziotinib (HM781-36B) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Vizimpro (dacomitinib) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup lung cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited Erbb2 (Her2) phosphorylation and downstream signaling in bronchial epithelial cells expressing ERBB2 (HER2) Y772_A775dup (also referred to as A775_G776insYVMA) in culture (PMID: 26545934). 26545934
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER2 Inhibitor Tucatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) were resistant to Tukysa (tucatinib) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial, Poziotinib (HM781-36B) treatment resulted in a confirmed objective response rate of 42% (5/12) in patients with non-small cell lung cancer harboring ERBB2 (HER2) Y772_A775dup (n=9) or ERBB2 (HER2) G778_P780dup (n=3), with a median progression-free survival of 5.6 months (PMID: 31588020; NCT03066206). 31588020
ERBB2 Y772_A775dup lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Clinical Study Actionable In a retrospective analysis, Poziotinib (HM781-36B) treatment resulted in an objective response rate of 33% (1/3) in non-small cell lung cancer patients harboring ERBB2 (HER2) Y772_A775dup (reported as (A775_G776insYVMA) (PMID: 30527195). 30527195
ERBB2 Y772_A775dup lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Case Reports/Case Series Actionable In a Phase II trial, Poziotinib (HM781-36B) treatment resulted in one partial response, stable disease in one patient, and progressive disease in three patients with lung adenocarcinoma harboring ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) (PMID: 30149884; NCT02979821). 30149884
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Tarloxotinib (TRLX) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup lung non-small cell carcinoma no benefit Erlotinib Clinical Study Actionable In a retrospective analysis, Tarceva (erlotinib) treatment resulted in an objective response rate of 0% (0/1) in non-small cell lung cancer patients harboring ERBB2 (HER2) Y772_A775dup (reported as (A775_G776insYVMA) (PMID: 30527195). 30527195
ERBB2 Y772_A775dup lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Clinical Study Actionable In a retrospective analysis, Gilotrif (afatinib) treatment resulted in an objective response rate of 16% (5/31) in non-small cell lung cancer patients harboring ERBB2 (HER2) Y772_A775dup (reported as (A775_G776insYVMA) (PMID: 30527195). 30527195
ERBB2 Y772_A775dup Advanced Solid Tumor conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Nerlynx (neratinib) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Advanced Solid Tumor conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of transformed cells expressing ERBB2 (HER2) Y772_A775dup (also referred to as ERBB2 A775_G776insYVMA) in culture (PMID: 28363995). 28363995
ERBB2 Y772_A775dup breast cancer sensitive HER inhibitor (Pan) Ado-trastuzumab emtansine + Poziotinib Preclinical - Cell culture Actionable In a preclinical study, addition of Poziotinib (HM781-36B) enhanced growth inhibition by Kadcyla (ado-trastuzumab emtansine) treatment in breast cancer cells expressing ERBB2 (HER2) Y772_A775dup in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) were resistant to Tykerb (lapatinib) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Imbruvica (ibrutinib) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Advanced Solid Tumor resistant Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup lung non-small cell carcinoma no benefit HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease in 5 patients and progressive disease in 4 patients with non-small cell lung cancer harboring ERBB2 (HER2) Y772_A775dup (PMID: 29420467; NCT01953926). 29420467
ERBB2 Y772_A775dup lung non-small cell carcinoma no benefit HER inhibitor (Pan) Dacomitinib Clinical Study Actionable In a retrospective analysis, Vizimpro (dacomitinib) treatment resulted in an objective response rate of 0% (0/13) in non-small cell lung cancer patients harboring ERBB2 (HER2) Y772_A775dup (reported as (A775_G776insYVMA) (PMID: 30527195). 30527195
ERBB2 Y772_A775dup lung non-small cell carcinoma sensitive HER inhibitor (Pan) Ado-trastuzumab emtansine + Poziotinib Preclinical - Pdx Actionable In a preclinical study, Poziotinib (HM781-36B) and Kadcyla (ado-trastuzumab emtansine) combination treatment resulted in sustained tumor regression in patient-derived xenograft models of non-small cell lung cancer harboring ERBB2 (HER2) Y772_A775dup (PMID: 31588020). 31588020
ERBB2 Y772_A775dup breast cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited viability of breast cancer cells expressing ERBB2 (HER2) Y772_A775dup in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup lung adenocarcinoma no benefit HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical study, a lung adenocarcinoma patient harboring ERBB2 Y772_A775dup (also referred to as A775_G776insYVMA and E740_A741insAYVM) achieved a partial response for 5 months following treatment with pulse Gilotrif (afatinib), however, a second patient harboring ERBB2 Y772_A775dup treated with pulse Gilotrif (afatinib) demonstrated progressive disease (PMID: 26964772). 26964772
ERBB2 Y772_A775dup lung adenocarcinoma no benefit HER inhibitor (Pan) Afatinib Clinical Study - Cohort Actionable In a retrospective study, Gilotrif (afatinib) treatment resulted in an objective response rate (ORR) of 15.6% (5/32) and a disease control rate of 68.8% (22/32) in patients with lung adenocarcinoma harboring ERBB2 (HER2) mutations, ORR (0%, 0/14), DCR (35.7%, 5/14), and median progression-free survival (1.2 mo) were significantly lower in patients with Y772_A775dup than those with other exon 20 insertions (40%, 4/10; 100%, 10/10; 7.6 mo) or missense mutations (13%, 1/8; 75%, 6/8; 3.6 mo) (PMID: 32162827). 32162827
ERBB2 Y772_A775dup Advanced Solid Tumor predicted - sensitive Ganetespib Preclinical - Cell culture Actionable In a preclinical study, Ganetespib inhibited growth of transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as reported as A775_G776insYVMA) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup Advanced Solid Tumor resistant Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) were resistant to Tarceva (erlotinib) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup Advanced Solid Tumor resistant AZ5104 Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) were resistant to AZ5104 in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Gilotrif (afatinib) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) demonstrated decreased response to Gilotrif (afatinib) compared to Poziotinib (HM781-36B) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup lung cancer no benefit Gefitinib Preclinical Actionable In a preclinical study, bronchial epithelial cells expressing ERBB2 (HER2) Y772_A775dup (also referred to as A775_G776insYVMA) did not demonstrate sensitivity to Iressa (gefitinib) in culture (PMID: 26545934). 26545934
ERBB2 Y772_A775dup Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited ERBB2 (HER2) phosphorylation and growth of a transformed cell line expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) in culture (PMID: 29686424). 29686424
ERBB2 Y772_A775dup Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) Y772_A775dup in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Her2-receptor negative breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in complete response in one patient, and stable disease in 2 patient with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) Y772_A775dup (PMID: 29420467; NCT01953926). 29420467
ERBB2 Y772_A775dup lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Phase II Actionable In a Phase II trial, Pyrotinib treatment resulted in an objective response rate of 27.3% (12/44) in non-small cell lung cancer patients harboring ERBB2 (HER2) Y772_A775dup (also reported as A775_G776insYVMA or M774_A775insAYVM) who had received prior platinum-based chemotherapy (PMID: 32614698; NCT02834936). 32614698
ERBB2 Y772_A775dup Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) were resistant to Tagrisso (osimertinib) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup lung cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical Actionable In a preclinical study, Poziotinib (HM781-36B) induced regression of lung tumors in mouse models harboring ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA), with no signs of progression at 12 weeks (PMID: 29686424). 29686424
ERBB2 Y772_A775dup Advanced Solid Tumor predicted - sensitive Luminespib Preclinical - Cell culture Actionable In a preclinical study, Luminespib (AUY922) inhibited growth of transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as reported as A775_G776insYVMA) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup urinary bladder cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.7 months in a patients with bladder cancer harboring ERBB2 (HER2) Y722_A775dup (PMID: 29420467; NCT01953926). 29420467
ERBB2 Y772_A775dup Advanced Solid Tumor conflicting HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y722_A755dup were resistant to Pyrotinib in culture (PMID: 31588020). 31588020
ERBB2 Y772_A775dup Advanced Solid Tumor conflicting HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited growth of transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor predicted - sensitive Luminespib Preclinical - Cell culture Actionable In a preclinical study, Luminespib (AUY922) inhibited growth of transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells co-expressing ERBB2 (HER2) Y772_A775dup (also referred to as A775_G776insYVMA) and ERBB2 (HER2) C805S demonstrated resistance to Nerlynx (neratinib) in culture (PMID: 28363995). 28363995
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant HER2 Inhibitor Tucatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S were resistant to Tukysa (tucatinib) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor predicted - sensitive Ganetespib Preclinical - Cell culture Actionable In a preclinical study, Ganetespib inhibited growth of transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant AZ5104 Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S were resistant to AZ5104 in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S were resistant to Tykerb (lapatinib) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells co-expressing ERBB2 (HER2) Y772_A775dup (also referred to as A775_G776insYVMA) and ERBB2 (HER2) C805S demonstrated resistance to Gilotrif (afatinib) in culture (PMID: 28363995). 28363995
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, ERBB2 (HER2) C805S was identified as a secondary mutation in transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) that acquired resistance to Poziotinib (HM781-36B) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S were resistant to Pyrotinib in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S were resistant to Tagrisso (osimertinib) in culture (PMID: 30527195). 30527195
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells co-expressing ERBB2 (HER2) C805S and ERBB2 (HER2) Y772_A775dup (also referred to as A775_G776insYVMA) demonstrated resistance to Vizimpro (dacomitinib) in culture (PMID: 28363995). 28363995
ERBB2 Y772_A775dup ERBB2 C805S Advanced Solid Tumor resistant Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) Y772_A775dup (reported as A775_G776insYVMA) and an acquired ERBB2 (HER2) C805S were resistant to Tarceva (erlotinib) in culture (PMID: 30527195). 30527195
ERBB2 T798M breast cancer sensitive Buparlisib Preclinical Actionable In a preclinical study, human breast cancer cells expressing the ERBB2 (HER2) T798M mutation demonstrated sensitivity to BKM120 (PMID: 23948973). 23948973
ERBB2 T798M Her2-receptor positive breast cancer resistant Lapatinib Preclinical Actionable In a preclinical study, ERBB2 (HER2)-receptor positive breast cancer cells expressing ERBB2 (HER2) T798M were resistant to Tykerb (lapatinib) in both culture and xenograft models (PMID: 23948973). 23948973
ERBB2 T798M Advanced Solid Tumor sensitive EKI-785 Preclinical Actionable In a preclinical study, EKI-285 (CL-387785) inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) T798M in culture (PMID: 22046346). 22046346
ERBB2 T798M breast cancer resistant Cetuximab Preclinical Actionable In a preclinical study, breast cancer cells expressing the ERBB2 (HER2) T798M mutant were resistant to Erbitux (cetuximab)(PMID: 23948973). 23948973
ERBB2 T798M breast cancer sensitive XL147 Preclinical Actionable In a preclinical study, breast cancer cell lines expressing ERBB2 (HER2) T798M demonstrated sensitivity to XL147 (SAR245408) in cell culture (PMID: 23948973). 23948973
ERBB2 T798M breast cancer sensitive Lapatinib + Trastuzumab Preclinical - Cell line xenograft Actionable In a preclinical study, human breast cancer cell lines and cell line xenografts expressing ERBB2 T798M demonstrated sensitivity to the combination of Herceptin (trastuzumab) and Tykerb (lapatinib) (PMID: 23948973). 23948973
ERBB2 T798M breast cancer sensitive Trastuzumab + XL147 Preclinical Actionable In a preclinical study, breast cancer cells expressing ERBB2 (HER2) T798M were sensitive to the combination of Herceptin (trastuzumab) and XL147 (PMID: 23948973). 23948973
ERBB2 T798M Advanced Solid Tumor resistant HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, transformed cell lines expressing ERBB2 (HER2) T798M demonstrated resistance when treated with AEE788 in culture (PMID: 22046346). 22046346
ERBB2 T798M Advanced Solid Tumor resistant Lapatinib Preclinical Actionable In a preclinical study, transformed cell lines expressing ERBB2 (HER2) T798M demonstrated resistance when treated with Tykerb (lapatinib) in culture (PMID: 22046346). 22046346
ERBB2 T798M breast cancer sensitive Cetuximab + Lapatinib Preclinical - Cell line xenograft Actionable In preclinical studies, the combination of Erbitux (cetuximab) and Tykerb (lapatinib) inhibited cell growth of a human breast cancer cell line harboring ERBB2 T798M and synergized to inhibit tumor growth in xenograft models (PMID: 23948973). 23948973
ERBB2 T798M Advanced Solid Tumor sensitive WZ4002 Preclinical Actionable In a preclinical study, WZ4002 inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) T798M in culture (PMID: 22046346). 22046346
ERBB2 T798M breast cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, breast cancer cells expressing ERBB2(HER2) T798M were sensitive to Gilotrif (afatinib) (PMID: 23948973). 23948973
ERBB2 T798M breast cancer resistant CI-1040 Preclinical Actionable In a preclinical study, breast cancer cells expressing ERBB2 T798M demonstrated resistance to CI-1040 (PMID: 23948973). 23948973
ERBB2 S653C urinary bladder cancer decreased response Selumetinib Preclinical Actionable In a preclinical study, bladder cancer cells over expressing ERBB2 (HER2) S653C demonstrated reduced sensitivity to Selumetinib (AZD6244) in culture (PMID: 24971884). 24971884
ERBB2 S653C urinary bladder cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) inhibited foci formation of bladder cancer cells over expressing ERBB2 (HER2) S653C in culture (PMID: 24971884). 24971884
ERBB2 S653C urinary bladder cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited foci formation of bladder cancer cells over expressing ERBB2 (HER2) S653C in culture (PMID: 24971884). 24971884
ERBB2 R896C breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) R896C reverted to normal morphology in culture upon Nerlynx (neratinib) treatment (PMID: 23220880). 23220880
ERBB2 R896C breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 R896C reverted to normal morphology in culture upon Tykerb (lapatinib) treatment (PMID: 23220880). 23220880
ERBB2 R896C breast cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 R896C reverted to normal morphology in culture upon Herceptin (trastuzumab) treatment (PMID: 23220880). 23220880
ERBB2 act mut breast cancer sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II clinical trial, Nerlynx (neratinib) treatment resulted in clinical benefit in 36% (5/14) of metastatic breast cancer patients harboring ERBB2 (HER2) activating mutations, with 1 complete response, 1 partial response, and 2 patients achieving stable disease for greater than 6 months, and a median progression-free survival of 5 months (J Clin Oncol 34, 2016 (suppl; abstr 516)). detail...
ERBB2 act mut estrogen-receptor positive breast cancer predicted - sensitive Vistusertib Phase I Actionable In a Phase I trial, Vistusertib (AZD2014) demonstrated safety and preliminary efficacy in patients with advanced solid tumors, including a patient with ER-positive breast cancer harboring an ERBB2 activating mutation (PMID: 25805799). 25805799
ERBB2 act mut lung adenocarcinoma sensitive Trastuzumab deruxtecan Phase II Actionable In a Phase II trial (DESTINY-Lung01), Enhertu (trastuzumab deruxtecan) treatment resulted in an objective response rate of 61.9% (26/42) and a median progression free survival of 14 months in patients with metastatic non-small cell lung carcinoma harboring ERBB2 activating mutations (J Clin Oncol 38: 2020 (suppl; abstr 9504); NCT03505710). detail...
ERBB2 act mut lung non-small cell carcinoma decreased response Atezolizumab Clinical Study - Cohort Actionable In a clinical study, immunotherapies including Tecentriq (atezolizumab) (n=5), Opdivo (nivolumab) (n=17), Keytruda (pembrolizumab) (n=36), and Camrelizumab (SHR-1210) (n=20) resulted in significantly shorter median progression-free survival (51.0 vs 70.5 days, HR=2.47, p=0.0037) in non-small cell lung cancer patients harboring EGFR (n=7) or ERBB2 (HER2) (n=7) activating mutations compared to wild-type patients (PMID: 31085721). 31085721
ERBB2 act mut lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Phase II Actionable In a Phase II trial, Pyrotinib treatment resulted in an objective response rate of 30% (18/60), with 55% (33/60) demonstrating stable disease, median duration of response of 6.9 mo, and median progression-free survival of 6.9 mo, and median overall survival of 14.4 mo in non-small cell lung cancer patients harboring ERBB2 (HER2) activating mutations, including exon 20 insertions and mutations occurring at L755, G776, and V777, who had received prior platinum-based chemotherapy (PMID: 32614698; NCT02834936). 32614698
ERBB2 act mut lung non-small cell carcinoma decreased response Nivolumab Clinical Study - Cohort Actionable In a clinical study, immunotherapies including Tecentriq (atezolizumab) (n=5), Opdivo (nivolumab) (n=17), Keytruda (pembrolizumab) (n=36), and Camrelizumab (SHR-1210) (n=20) resulted in significantly shorter median progression-free survival (51.0 vs 70.5 days, HR=2.47, p=0.0037) in non-small cell lung cancer patients harboring EGFR (n=7) or ERBB2 (HER2) (n=7) activating mutations compared to wild-type patients (PMID: 31085721). 31085721
ERBB2 act mut lung non-small cell carcinoma predicted - resistant Osimertinib Case Reports/Case Series Actionable In a retrospective analysis, activating ERBB2 (HER2) mutations were identified in 3 of 100 patients with non-small cell lung cancer at treatment discontinuation of Tagrisso (osimertinib) (PMID: 31839416). 31839416
ERBB2 act mut cervical cancer predicted - sensitive HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), heavily pretreated cervical cancer patients harboring an ERBB2 (HER2) mutation demonstrated an objective response rate of 25% (4/16), including 1 complete response and 3 partial responses, a median progression-free survival of 7.0 months, a median overall survival of 16.8 months, and a clinical benefit rate of 43.8% (7/16) when treated with Nerlynx (neratinib) (PMID: 32723675; NCT01953926). 32723675
ERBB2 act mut biliary tract cancer predicted - sensitive Pertuzumab + Trastuzumab Case Reports/Case Series Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in an objective response in a patient with biliary cancer harboring an ERBB2 (HER2) activating mutation, but no amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 act mut Advanced Solid Tumor sensitive HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) activation loop mutations demonstrated sensitivity to AEE788 in culture (PMID: 22046346). 22046346
ERBB2 act mut lung non-small cell carcinoma decreased response Camrelizumab Clinical Study - Cohort Actionable In a clinical study, immunotherapies including Tecentriq (atezolizumab) (n=5), Opdivo (nivolumab) (n=17), Keytruda (pembrolizumab) (n=36), and Camrelizumab (SHR-1210) (n=20) resulted in significantly shorter median progression-free survival (51.0 vs 70.5 days, HR=2.47, p=0.0037) in non-small cell lung cancer patients harboring EGFR (n=7) or ERBB2 (HER2) (n=7) activating mutations compared to wild-type patients (PMID: 31085721). 31085721
ERBB2 act mut lung adenocarcinoma predicted - sensitive Ado-trastuzumab emtansine Phase II Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall response rates of 44% (8/18) and 39% (7/18) partial response and stable disease, respectively, and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations (PMID: 29989854; NCT02675829). 29989854
ERBB2 act mut lung non-small cell carcinoma decreased response Pembrolizumab Clinical Study - Cohort Actionable In a clinical study, immunotherapies including Tecentriq (atezolizumab) (n=5), Opdivo (nivolumab) (n=17), Keytruda (pembrolizumab) (n=36), and Camrelizumab (SHR-1210) (n=20) resulted in significantly shorter median progression-free survival (51.0 vs 70.5 days, HR=2.47, p=0.0037) in non-small cell lung cancer patients harboring EGFR (n=7) or ERBB2 (HER2) (n=7) activating mutations compared to wild-type patients (PMID: 31085721). 31085721
ERBB2 act mut Advanced Solid Tumor predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in objective response in 11% (4/36) of patients with advanced solid tumors harboring ERBB2 (HER2) activating mutations but not amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 act mut lung non-small cell carcinoma predicted - sensitive Pertuzumab + Trastuzumab Phase II Actionable In a Phase II trial (MyPathway), Herceptin (trastuzumab) and Perjeta (pertuzumab) combination treatment resulted in partial response in 21% (3/14) and stable disease lasting over 120 days in 21% (3/14) of patients with non-small cell lung cancer harboring ERBB2 (HER2) activating mutations but not amplification or overexpression (PMID: 29320312; NCT02091141). 29320312
ERBB2 act mut PIK3CA act mut breast cancer sensitive VS-5584 Preclinical Actionable In a preclinical study, breast cancer cells with mutations in both ERBB2 (HER2) and PIK3CA were more sensitive to VS-5584 (PMID: 23270925). 23270925
ERBB2 act mut STK11 loss breast cancer sensitive AZD8055 Preclinical Actionable In a preclinical study, AZD8055 inhibited tumor growth in a mouse model of spontaneous breast cancer harboring an ERBB2 (HER2) activating mutation and loss of STK11 (LKB1), which was enhanced by the addition of 2-DG (2-deoxyglucose) (PMID: 25436981). 25436981
ERBB2 L841V colorectal cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.8 months in a patient with colorectal cancer harboring ERBB2 (HER2) L841V (PMID: 29420467; NCT01953926). 29420467
ERBB2 L841V Her2-receptor negative breast cancer no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 2.8 months in a patient with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) L841V (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F colon cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited colony formation in transformed mouse colon epithelial cells over expressing ERBB2 (HER2) S310F in culture (PMID: 26243863). 26243863
ERBB2 S310F colorectal cancer resistant Cetuximab Preclinical Actionable In a preclinical study, colorectal cancer cells over expressing ERBB2 (HER2) S310F were resistant to Erbitux (cetuximab) in culture (PMID: 26243863). 26243863
ERBB2 S310F Her2-receptor negative breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in complete response with a progression-free survival of 14.6 months in one patient, and stable disease with a progression-free survival of 3.7 months in another patient with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F salivary gland carcinoma predicted - sensitive Pertuzumab + Trastuzumab Case Reports/Case Series Actionable In a Phase II (MyPathway) trial, Perjeta (pertuzumab) and Herceptin (trastuzumab) combination therapy resulted in stable disease in a patient with advanced salivary gland carcinoma harboring ERBB2 (HER2) S310F, with a progression-free survival of 11 months (PMID: 32067683; NCT02091141). 32067683
ERBB2 S310F biliary tract cancer conflicting HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in partial response in one and progressive disease in another patient with biliary tract cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F breast cancer resistant Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, ligand-activated breast cancer cells expressing ERBB2 (HER2) S310F demonstrated resistance to treatment with Herceptin (trastuzumab) in culture (PMID: 31920346). 31920346
ERBB2 S310F urinary bladder cancer sensitive Cetuximab Preclinical - Cell culture Actionable In a preclinical study, a bladder cancer cell line harboring ERBB2 S310F demonstrated decreased viability when treated with Erbitux (cetuximab) in culture (PMID: 31635022). 31635022
ERBB2 S310F gastroesophageal junction adenocarcinoma predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 3.9 months in a patient with gastroesophageal cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F Advanced Solid Tumor sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) decreased cell survival of transformed human cells expressing ERBB2 (HER2) S310F (PMID: 22908275). 22908275
ERBB2 S310F cervical cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in partial response in 1 patient, stable disease in 1 patient, and progressive disease in 1 patient with cervical cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F lung non-small cell carcinoma predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.9 months in a patient with non-small cell lung cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F urinary bladder cancer decreased response Selumetinib Preclinical Actionable In a preclinical study, bladder cancer cells over expressing ERBB2 (HER2) S310F demonstrated reduced sensitivity to Selumetinib (AZD6244) in culture (PMID: 24971884). 24971884
ERBB2 S310F breast cancer resistant Pertuzumab Preclinical - Cell culture Actionable In a preclinical study, ligand-activated breast cancer cells expressing ERBB2 (HER2) S310F demonstrated resistance to treatment with Perjeta (pertuzumab) in culture compared to cells expressing wild-type ERBB2 (HER2) (PMID: 31920346). 31920346
ERBB2 S310F colorectal cancer resistant Panitumumab Preclinical Actionable In a preclinical study, colorectal cancer cells over expressing ERBB2 (HER2) S310F were resistant to Vectibix (panitumumab) in culture (PMID: 26243863). 26243863
ERBB2 S310F endometrial cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 2.6 months in a patient with endometrial cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F colon cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) inhibited colony formation in transformed mouse colon epithelial cells over expressing ERBB2 (HER2) S310F in culture (PMID: 26243863). 26243863
ERBB2 S310F urinary bladder cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited foci formation of bladder cancer cells over expressing ERBB2 (HER2) S310F in culture (PMID: 24971884). 24971884
ERBB2 S310F urinary bladder cancer no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease in 4 patients and progressive disease in 1 patient with bladder cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F colorectal cancer conflicting HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) S310F in culture (PMID: 26243863). 26243863
ERBB2 S310F colorectal cancer conflicting HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.7 months in a patient with colorectal cancer harboring ERBB2 (HER2) S310F (PMID: 29420467; NCT01953926). 29420467
ERBB2 S310F urinary bladder cancer sensitive Gefitinib Preclinical - Cell culture Actionable In a preclinical study, a bladder cancer cell line harboring ERBB2 S310F demonstrated decreased viability when treated with Iressa (gefitinib) in culture (PMID: 31635022). 31635022
ERBB2 S310F urinary bladder cancer no benefit Pertuzumab Preclinical - Cell culture Actionable In a preclinical study, a bladder cancer cell line harboring ERBB2 S310F did not demonstrate decreased viability when treated with Perjeta (pertuzumab) in culture (PMID: 31635022). 31635022
ERBB2 S310F colorectal cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) S310F in culture (PMID: 26243863). 26243863
ERBB2 S310F gallbladder cancer predicted - sensitive Capecitabine + Lapatinib Case Reports/Case Series Actionable In a clinical case study, Tykerb (lapatinib) in combination with Xeloda (capecitabine) resulted in rapid clinical improvement and decrease of tumor size after 2 cycles of treatment in a patient with metastatic gallbladder cancer harboring ERBB2 (HER2) S310F (PMID: 31558980). 31558980
ERBB2 S310F Advanced Solid Tumor sensitive Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) inhibited proliferation of transformed cells expressing ERBB2 S310F in culture (PMID: 22908275). 22908275
ERBB2 S310F urinary bladder cancer sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, Tykerb (lapatinib) inhibited foci formation of bladder cancer cells over expressing ERBB2 (HER2) S310F in culture (PMID: 24971884). 24971884
ERBB2 S310F urinary bladder cancer no benefit Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, a bladder cancer cell line harboring ERBB2 S310F did not demonstrate decreased viability when treated with Herception (trastuzumab) in culture (PMID: 31635022). 31635022
ERBB2 D277H ERBB2 S310F urinary bladder cancer decreased response Selumetinib Preclinical Actionable In a preclinical study, bladder cancer cells over expressing both ERBB2 (HER2) D277H and S310F demonstrated reduced sensitivity to Selumetinib (AZD6244) in culture (PMID: 24971884). 24971884
ERBB2 D277H ERBB2 S310F urinary bladder cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited foci formation of bladder cancer cells over expressing both ERBB2 (HER2) D277H and S310F in culture (PMID: 24971884). 24971884
ERBB2 D277H ERBB2 S310F urinary bladder cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) inhibited foci formation of bladder cancer cells over expressing both ERBB2 (HER2) D277H and S310F in culture (PMID: 24971884). 24971884
ERBB2 G778_S779insCPG lung adenocarcinoma no benefit Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall responses of partial response in 44% (8/18) and stable disease in 39% (7/18), and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations, but one patient specifically harboring a G778_S779insCPG mutation did not have a partial response (PMID: 29989854; NCT02675829). 29989854
ERBB2 G778_S779insCPG Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G778_S779insCPG in culture (PMID: 28363995). 28363995
ERBB2 V659E lung non-small cell carcinoma no benefit Anlotinib Case Reports/Case Series Actionable In a clinical case study, Anlotinib (AL-3818) treatment resulted in disease progression after seven months in a non-small cell lung cancer patient harboring ERBB2 (HER2) V659E that progressed in response to multiple prior therapies (PMID: 32478891). 32478891
ERBB2 V659E breast cancer sensitive 23814 + Tivozanib Preclinical Actionable In a preclinical study, the combination of 23814 and Tivozanib (AV-951) inhibited tumor growth in several transgenic mouse models of breast cancer expressing ERBB2 (HER2) V659E, including those with resistance to VEGFR inhibitors (PMID: 25995436). 25995436
ERBB2 V659E lung adenocarcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall responses of partial response in 44% (8/18) and stable disease in 39% (7/18), and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations, and a subset of patients specifically harboring ERBB2 (HER2) V659E had a 50% (1/2) partial response rate (PMID: 29989854; NCT02675829). 29989854
ERBB2 V659E biliary tract cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival of 11.1 months in a patient with biliary tract cancer harboring ERBB2 (HER2) V659E (PMID: 29420467; NCT01953926). 29420467
ERBB2 V659E Advanced Solid Tumor predicted - resistant Pertuzumab Preclinical - Cell culture Actionable In a preclinical study, treatment with Perjeta (pertuzumab) led to induced growth of cells expressing ERBB2 (HER2) V659E in culture (PMID: 30449325). 30449325
ERBB2 V659E lung non-small cell carcinoma no benefit HER inhibitor (Pan) Afatinib + Rivoceranib Case Reports/Case Series Actionable In a clinical case study, Gilotrif (afatinib) and Apatinib (YN968D1) combination treatment resulted in disease progression within one month in a non-small cell lung cancer patient harboring ERBB2 (HER2) V659E that progressed in response to prior therapies (PMID: 32478891). 32478891
ERBB2 V659E Advanced Solid Tumor predicted - sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V659E demonstrated decreased cell proliferation and reduced survival when treated with Tykerb (lapatinib) in culture (PMID: 30449325). 30449325
ERBB2 V659E Advanced Solid Tumor predicted - sensitive Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V659E demonstrated decreased cell proliferation and reduced survival when treated with Herceptin (trastuzumab) in culture (PMID: 30449325). 30449325
ERBB2 V659E lung non-small cell carcinoma predicted - sensitive Capecitabine + Lapatinib Case Reports/Case Series Actionable In a clinical case study, treatment with the combination of Tykerb (lapatinib) and Xeloda (capecitabine) resulted in eight months of progression-free survival followed by disease progression in a non-small cell lung cancer patient harboring ERBB2 (HER2) V659E (PMID: 32478891). 32478891
ERBB2 V659E lung non-small cell carcinoma predicted - sensitive Icotinib Case Reports/Case Series Actionable In a clinical case study, a patient with non-small cell lung cancer harboring ERBB2 (HER2) V659E achieved six months of progression-free survival with Icotinib treatment, prior to disease progression (PMID: 32478891). 32478891
ERBB2 V659E Advanced Solid Tumor predicted - sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V659E demonstrated decreased cell proliferation and reduced survival when treated with Nerlynx (neratinib) in culture (PMID: 30449325). 30449325
ERBB2 V659E lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical case study, Gilotrif (afatinib) treatment resulted in eight months of progression-free survival followed by disease progression in a non-small cell lung cancer patient harboring ERBB2 (HER2) V659E previously treated with the combination of Tykerb (lapatinib) and Xeloda (capecitabine) (PMID: 32478891). 32478891
ERBB2 V659E lung cancer no benefit Gefitinib Preclinical Actionable In a preclinical study, bronchial epithelial cells expressing ERBB2 (HER2) V659E did not demonstrate sensitivity to Iressa (gefitinib) in culture (PMID: 26545934). 26545934
ERBB2 V659E Advanced Solid Tumor predicted - resistant Cetuximab Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V659E demonstrated resistance to treatment with Erbitux (cetuximab) in culture (PMID: 30449325). 30449325
ERBB2 V659E Advanced Solid Tumor predicted - sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V659E demonstrated decreased cell proliferation and reduced survival when treated with Gilotrif (afatinib) in culture (PMID: 30449325). 30449325
ERBB2 V659E lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease in two patients with non-small cell lung cancer harboring ERBB2 (HER2) V659E (PMID: 29420467; NCT01953926). 29420467
ERBB2 V659E lung cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited Erbb2 (Her2) phosphorylation and downstream signaling in bronchial epithelial cells expressing ERBB2 (HER2) V659E in culture (PMID: 26545934). 26545934
ERBB2 V659E Advanced Solid Tumor predicted - resistant Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V659E did not benefit from treatment with Iressa (gefitinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 V659E Advanced Solid Tumor no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) V659E did not benefit from treatment with Tarceva (erlotinib) in culture when compared to Erbb2 (Her2) inhibitors (PMID: 30449325). 30449325
ERBB2 L755_T759del breast cancer resistant Lapatinib Preclinical Actionable In a preclinical study, breast cancer cells expressing ERBB2 (HER2) L755_T759del were resistant to treatment with Tykerb (lapatinib), resulting in decreased growth inhibition (PMID: 23220880). 23220880
ERBB2 L755_T759del breast cancer sensitive Gefitinib Preclinical Actionable In a preclinical study, breast cancer cells expressing ERBB2 (HER2) L755_T759del were sensitive to treatment with Iressa (gefitinib) (PMID: 23220880). 23220880
ERBB2 L755_T759del breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, breast cancer cells expressing ERBB2 (HER2) L755_T759del were sensitive to treatment with Nerlynx (neratinib) (PMID: 23220880). 23220880
ERBB2 T862A Advanced Solid Tumor sensitive HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, AEE788 inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) T862A in culture (PMID: 22046346). 22046346
ERBB2 T862A Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, higher dose of Tykerb (lapatinib) inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) N862A in culture (PMID: 22046346). 22046346
ERBB2 S783P Advanced Solid Tumor resistant Lapatinib Preclinical Actionable In a preclinical study, transformed cells over expressing ERBB2 (HER2) S783P were resistant to Tykerb (lapatinib) in culture (PMID: 18413839). 18413839
ERBB2 S783P Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) S783P in culture (PMID: 18413839). 18413839
ERBB2 P761del endometrial cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.9 months in a patient with endometrial cancer harboring ERBB2 (HER2) P761del (PMID: 29420467; NCT01953926). 29420467
ERBB2 D769Y urinary bladder cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.4 months in a patient with bladder cancer harboring both ERBB2 (HER2) D769Y (PMID: 29420467; NCT01953926). 29420467
ERBB2 D769Y malignant peripheral nerve sheath tumor predicted - sensitive Lapatinib Case Reports/Case Series Actionable In a clinical case study, Tykerb (lapatinib) treatment resulted in clinical improvements, partial tumor size reduction, and metabolic response in a patient with neurofibroma/schwannoma hybrid nerve sheath tumor harboring ERBB2 (HER2) D769Y (PMID: 32017710). 32017710
ERBB2 D769Y Advanced Solid Tumor sensitive Nazartinib Preclinical - Cell culture Actionable In a preclinical study, Nazartinib (EGF816) inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 D769Y Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) D769Y were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 D769Y Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 D769Y Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) D769Y were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 D769Y breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 D769Y reverted to normal morphology in culture upon Tykerb (lapatinib) treatment (PMID: 23220880). 23220880
ERBB2 D769Y Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 D769Y breast cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 D769Y reverted to normal morphology in culture upon Herceptin (trastuzumab) treatment (PMID: 23220880). 23220880
ERBB2 D769Y Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 D769Y Advanced Solid Tumor sensitive Osimertinib Preclinical - Cell culture Actionable In a preclinical study, Tagrisso (osimertinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 D769Y Advanced Solid Tumor sensitive HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, Pyrotinib inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 D769Y breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) D769Y reverted to normal morphology in culture upon Nerlynx (neratinib) treatment (PMID: 23220880). 23220880
ERBB2 D769Y gastroesophageal junction adenocarcinoma predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.9 months in a patient with gastroesophageal cancer harboring ERBB2 (HER2) D769Y (PMID: 29420467; NCT01953926). 29420467
ERBB2 D769Y Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 D769Y Advanced Solid Tumor sensitive HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, Imbruvica (ibrutinib) inhibited survival of transformed cells expressing ERBB2 (HER2) D769Y in culture (PMID: 31588020). 31588020
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive Docetaxel + Trastuzumab Case Reports/Case Series Actionable In a clinical study, treatment with the combination of Herceptin (trastuzumab) and Taxotere (docetaxel) in a non-small cell lung cancer patient harboring an ERBB2 exon 20 insertion resulted in a partial response (PMID: 23610105). 23610105
ERBB2 exon 20 ins lung non-small cell carcinoma no benefit HER2 Inhibitor Neratinib Phase II Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease in 10 and progressive disease in 5 of the 15 patients with non-small cell lung cancer harboring ERBB2 (HER2) exon 20 insertion mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 exon 20 ins Her2-receptor negative breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in complete response in 1, partial response in 1, and stable disease in 3 of the 5 patients with Erbb2 (Her2)-receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) exon 20 insertion mutations (PMID: 29420467; NCT01953926). 29420467
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive Trastuzumab Case Reports/Case Series Actionable In a clinical study, targeted therapy with Gilotrif (afatinib) or Herceptin (trastuzumab) resulted in an objective response rate of 44% (4/9) in non-small cell lung carcinoma patients harboring ERBB2 (HER2) mutations that progressed during previous therapies, all four responders harbored ERBB2 (HER2) exon 20 insertions (PMID: 28167203). 28167203
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive Trastuzumab Case Reports/Case Series Actionable In a clinical study, Herceptin (trastuzumab) treatment in a non-small cell lung cancer patient harboring an ERBB2 exon 20 insertion resulted in a partial response (PMID: 23610105). 23610105
ERBB2 exon 20 ins Advanced Solid Tumor sensitive HER2 Inhibitor AP32788 Preclinical - Pdx & cell culture Actionable In a preclinical study, AP32788 inhibited growth of transformed cell lines over expressing ERBB2 (HER2) exon 20 insertions in culture, and induced tumor regression in PDX models (AACR, Cancer Res: April 2016; Volume 57, Abstract #2644). detail...
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical study, targeted therapy with Gilotrif (afatinib) or Herceptin (trastuzumab) resulted in an objective response rate of 44% (4/9) in non-small cell lung carcinoma patients harboring ERBB2 (HER2) mutations that progressed during previous therapies, all four responders harbored ERBB2 (HER2) exon 20 insertions (PMID: 28167203). 28167203
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive Carboplatin + Paclitaxel + Trastuzumab Case Reports/Case Series Actionable In a clinical study, treatment with the combination of Herceptin (trastuzumab), Paraplatin (carboplatin), and Taxol (paclitaxel) in non-small cell lung cancer patients harboring an ERBB2 exon 20 insertion (n=2) resulted in a partial response in one patient and stable disease in the other patient (PMID: 23610105). 23610105
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive Trastuzumab + Vinorelbine Case Reports/Case Series Actionable In a clinical study, treatment with the combination of Herceptin (trastuzumab) and Navelbine (vinorelbine) in non-small cell lung cancer patients harboring an ERBB2 exon 20 insertion (n=8) resulted in a partial response in 5 patients and stable disease in 2 patients (PMID: 23610105). 23610105
ERBB2 exon 20 ins lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical study, treatment with pulse Gilotrif (afatinib) resulted in an objective response rate of 33.3% (1/3) in lung adenocarcinoma patients with ERBB2 (HER2) exon 20 insertion mutations (PMID: 26964772). 26964772
ERBB2 exon 20 ins lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Dacomitinib Phase II Actionable In a Phase II trial, Vizimpro (dacomitinib) treatment resulted in an overall response rate of 25% (3/26) in patients with lung adenocarcinoma harboring ERBB2 (HER2) exon 20 mutations, including exon 20 insertions, indels, and missense mutations (23, 2, 1, respectively) (PMID: 25899785; NCT00818441). 25899785
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Clinical Study - Cohort Actionable In a clinical study, Poziotinib (HM781-36B) treatment resulted in an objective response rate (ORR) of 27.6% (8/29), a disease control rate of 69%, a median progression-free survival of 5.6 months, and an overall survival of 9.5 months in patients with advanced non-small cell lung cancer harboring EGFR or ERBB2 (HER2) exon 20 insertion mutations, ORR was 50% in patients harboring ERBB2 (HER2) mutations (Annals of Oncology (2020) 31 (suppl_4): S882). detail...
ERBB2 exon 20 ins lung non-small cell carcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Phase II Actionable In a Phase II trial (ZENITH20-2), Poziotinib (HM781-36B) demonstrated a manageable safety profile, resulted in an objective response rate of 35.1% (26/74) in evaluable patients with advanced non-small cell lung cancer harboring ERBB2 (HER2) exon 20 insertion mutations, with a median duration of response of 5.1 months, a disease control rate of 70%, and a median progression-free survival of 5.5 months (Annals of Oncology (2020) 31 (suppl_4): S1188; NCT03318939). detail...
ERBB2 A775_G776insYVMA Advanced Solid Tumor sensitive JQ1 + Osimertinib Preclinical Actionable In a preclinical study, transgenic mouse models expressing ERBB2 (HER2) A775_G776insYVMA demonstrated greater tumor regression when treated with the combination of JQ1 and Tagrisso (osimertinib) compared to treatment with either agent alone, which resulted in little to no regression (PMID: 29298799). 29298799
ERBB2 A775_G776insYVMA lung non-small cell carcinoma sensitive Ado-trastuzumab emtansine Preclinical - Pdx Actionable In a preclinical study, treatment with Kadcyla (ado-trastuzumab emtansine) resulted in tumor growth inhibition and tumor regression of patient derived xenograft (PDX) models harboring ERBB2 A775_G776insYVMA, but to a lesser degree than treatment with Pyrotinib (PMID: 30596880; NCT02535507). 30596880
ERBB2 A775_G776insYVMA lung non-small cell carcinoma sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, Kadcyla (ado-trastuzumab emtansine) treatment demonstrated limited efficacy in patients with relapsed non-small cell lung cancer harboring ERBB2 (Her2) mutations, resulting in a partial response in 20% (1/5) and stable disease in 60% (3/5) of patients harboring ERBB2 (HER2) A775_G776insYVMA (PMID: 29313813). 29313813
ERBB2 A775_G776insYVMA lung adenocarcinoma predicted - sensitive Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall responses of partial response in 44% (8/18) and stable disease in 39% (7/18), and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations, and a subset of patients specifically harboring ERBB2 (HER2) A775_G776insYVMA mutation had a 60% (3/5) partial response rate (PMID: 29989854; NCT02675829). 29989854
ERBB2 A775_G776insYVMA lung non-small cell carcinoma sensitive HER inhibitor (Pan) Afatinib Preclinical - Pdx & cell culture Actionable In a preclinical study, treatment with Gilotrif (afatinib) resulted in decreased cell viability of patient-derived non-small cell lung cancer organoids harboring ERBB2 A775_G776insYVMA and tumor growth inhibition and tumor regression in patient derived xenograft (PDX) models, but to a lesser degree than treatment with Pyrotinib (PMID: 30596880; NCT02535507). 30596880
ERBB2 A775_G776insYVMA lung non-small cell carcinoma sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, ten patients with non-small cell lung cancer harboring ERBB2 A775_G776insYVMA demonstrated an objective response rate of 50% (5/10) and a progression-free survival of 4.1 months when treated with Pyrotinib, and preclinical analysis showed Pyrotinib treatment led to reduced cell viability in patient-derived organoids and tumor growth inhibition and regression in patient derived xenograft (PDX) models (PMID: 30596880; NCT02535507). 30596880
ERBB2 A775_G776insYVMA PIK3CA R425L lung non-small cell carcinoma predicted - resistant Trastuzumab Case Reports/Case Series Actionable In a clinical study, the PIK3CA R425L mutation was identified as a potential resistance mechanism in a non-small cell lung carcinoma patient harboring ERBB2 (HER2) A775_G776insYVMA, that progressed during Herceptin (trastuzumab) treatment (PMID: 28167203). 28167203
ERBB2 R188C cancer sensitive HER2 Inhibitor Pelitinib Preclinical - Cell culture Actionable In a preclinical study, Pelitinib inhibited growth of transformed cells expressing ERBB2 (HER2) R188C in culture (PMID: 32366937). 32366937
ERBB2 R188C cancer no benefit Gefitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R188C did not demonstrate sensitivity to growth inhibition by Iressa (gefitinib) in culture (PMID: 32366937). 32366937
ERBB2 R188C cancer no benefit Erlotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) R188C did not demonstrate sensitivity to growth inhibition by Tarceva (erlotinib) in culture (PMID: 32366937). 32366937
ERBB2 R188C cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of transformed cells expressing ERBB2 (HER2) R188C in culture (PMID: 32366937). 32366937
ERBB2 R188C cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited growth of transformed cells expressing ERBB2 (HER2) R188C in culture (PMID: 32366937). 32366937
ERBB2 R188C cancer sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of transformed cells expressing ERBB2 (HER2) R188C in culture (PMID: 32366937). 32366937
ERBB2 R188C cancer sensitive HER inhibitor (Pan) Canertinib Preclinical - Cell culture Actionable In a preclinical study, Canertinib (CI-1033) inhibited growth of transformed cells expressing ERBB2 (HER2) R188C in culture (PMID: 32366937). 32366937
ERBB2 G776_V777insVGC lung non-small cell carcinoma predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease in 1 patient and progressive disease in 2 patients with non-small cell lung cancer harboring ERBB2 (HER2) G776_V777insVGC (PMID: 29420467; NCT01953926). 29420467
ERBB2 L755S colorectal cancer resistant Panitumumab Preclinical Actionable In a preclinical study, colorectal cancer cells over expressing ERBB2 (HER2) L755S were resistant to Vectibix (panitumumab) in culture (PMID: 26243863). 26243863
ERBB2 L755S breast cancer conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, treatment with Nerlynx (neratinib) resulted in growth inhibition in transformed human breast cell lines expressing ERBB2 (HER2) L755S in culture (PMID: 23220880). 23220880
ERBB2 L755S breast cancer conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed breast epithelial cells expressing ERBB2 (HER2) L755S were resistant to Nerlynx (neratinib) in culture (PMID: 31135266). 31135266
ERBB2 L755S breast cancer conflicting HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial, Nerlynx (neratinib) treatment resulted in a clinical benefit rate of 31% (5/16) in metastatic breast cancer patients harboring ERBB2 (HER2) mutations, with 1 partial response and 1 stable disease in 6 patients harboring ERBB2 (HER2) L755S (PMID: 28679771; NCT01670877). 28679771
ERBB2 L755S Advanced Solid Tumor sensitive EKI-785 Preclinical Actionable In a preclinical study, EKI-285 (CL-387785) inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) L755S in culture (PMID: 22046346). 22046346
ERBB2 L755S Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) L755S in culture (PMID: 31588020). 31588020
ERBB2 L755S Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755S demonstrated resistance when treated with Tykerb (lapatinib) in culture (PMID: 22046346). 22046346
ERBB2 L755S Advanced Solid Tumor resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755S were resistant to Tykerb (lapatinib) in culture (PMID: 31588020). 31588020
ERBB2 L755S Advanced Solid Tumor sensitive Nazartinib Preclinical - Cell culture Actionable In a preclinical study, Nazartinib (EGF816) inhibited survival of transformed cells expressing ERBB2 (HER2) L755S in culture (PMID: 31588020). 31588020
ERBB2 L755S Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited survival of transformed cells expressing ERBB2 (HER2) L755S in culture (PMID: 31588020). 31588020
ERBB2 L755S colorectal cancer sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell line xenograft Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited viability of colorectal cancer cells harboring ERBB2 (HER2) L755S in culture, and reduced tumor size by 58% in a cell line xenograft model (PMID: 31588020). 31588020
ERBB2 L755S Advanced Solid Tumor sensitive HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, Gilotrif (afatinib) inhibited survival of transformed cells expressing ERBB2 (HER2) L755S in culture (PMID: 31588020). 31588020
ERBB2 L755S Advanced Solid Tumor resistant HER2 Inhibitor Sapitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755S were resistant to Sapitinib (AZD8931) in culture (PMID: 31588020). 31588020
ERBB2 L755S biliary tract cancer no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease in one and stable disease in another patient with biliary tract cancer harboring ERBB2 (HER2) L755S (PMID: 29420467; NCT01953926). 29420467
ERBB2 L755S colorectal cancer conflicting HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) L755S in culture (PMID: 26243863). 26243863
ERBB2 L755S colorectal cancer conflicting HER2 Inhibitor Neratinib Preclinical - Cell line xenograft Actionable In a preclinical study, Nerlynx (neratinib) treatment resulted in increased tumor growth compared to vehicle control in cell line xenograft models of colorectal cancer harboring ERBB2 (HER2) L755S (PMID: 31588020). 31588020
ERBB2 L755S breast cancer sensitive HER2 Inhibitor Neratinib + Selumetinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) and Selumetinib (AZD6244) synergistically inhibited viability of transformed breast epithelial cells expressing ERBB2 L755S in culture (PMID: 31135266). 31135266
ERBB2 L755S Advanced Solid Tumor sensitive WZ4002 Preclinical Actionable In a preclinical study, WZ4002 inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) L755S in culture (PMID: 22046346). 22046346
ERBB2 L755S lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in partial response with a progression-free survival of 12.7 months in a patient with non-small cell lung cancer harboring ERBB2 (HER2) L755S (PMID: 29420467; NCT01953926). 29420467
ERBB2 L755S Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) L755S in culture (PMID: 18413839). 18413839
ERBB2 L755S breast cancer sensitive Lapatinib + Selumetinib Preclinical - Cell culture Actionable In a preclinical study, Tykerb (lapatinib) and Selumetinib (AZD6244) synergistically inhibited viability of transformed breast epithelial cells expressing ERBB2 L755S in culture (PMID: 31135266). 31135266
ERBB2 L755S breast cancer sensitive Lapatinib + Pictilisib Preclinical - Cell culture Actionable In a preclinical study, Tykerb (lapatinib) and Pictilisib (GDC-0941) synergistically inhibited viability of transformed breast epithelial cells expressing ERBB2 L755S in culture (PMID: 31135266). 31135266
ERBB2 L755S breast cancer sensitive HER2 Inhibitor Neratinib + Pictilisib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) and Pictilisib (GDC-0941) synergistically inhibited viability of transformed breast epithelial cells expressing ERBB2 L755S in culture (PMID: 31135266). 31135266
ERBB2 L755S Advanced Solid Tumor resistant HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, transformed cell lines expressing ERBB2 (HER2) L755S demonstrated resistance to AEE788 in culture, except at very high doses (PMID: 22046346). 22046346
ERBB2 L755S colon cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited colony formation in transformed mouse colon epithelial cells over expressing ERBB2 (HER2) L755S in culture (PMID: 26243863). 26243863
ERBB2 L755S Advanced Solid Tumor sensitive HER inhibitor (Pan) Poziotinib Preclinical - Cell culture Actionable In a preclinical study, Poziotinib (HM781-36B) inhibited survival of transformed cells expressing ERBB2 (HER2) L755S in culture (PMID: 31588020). 31588020
ERBB2 L755S Advanced Solid Tumor sensitive Osimertinib Preclinical - Cell culture Actionable In a preclinical study, Tagrisso (osimertinib) inhibited survival of transformed cells expressing ERBB2 (HER2) L755S in culture (PMID: 31588020). 31588020
ERBB2 L755S colorectal cancer resistant Cetuximab Preclinical Actionable In a preclinical study, colorectal cancer cells over expressing ERBB2 (HER2) L755S were resistant to Erbitux (cetuximab) in culture (PMID: 26243863). 26243863
ERBB2 L755S Advanced Solid Tumor resistant HER2 Inhibitor Pyrotinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755S were resistant to Pyrotinib in culture (PMID: 31588020). 31588020
ERBB2 L755S Advanced Solid Tumor resistant HER2 Inhibitor Ibrutinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) L755S were resistant to Imbruvica (ibrutinib) in culture (PMID: 31588020). 31588020
ERBB2 L755S colorectal cancer conflicting HER inhibitor (Pan) Afatinib Preclinical - Cell line xenograft Actionable In a preclinical study, Gilotrif (afatinib) did not significantly inhibit tumor growth compared to vehicle control in cell line xenograft models of colorectal cancer harboring ERBB2 (HER2) L755S (PMID: 31588020). 31588020
ERBB2 L755S colorectal cancer conflicting HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) L755S in culture (PMID: 26243863). 26243863
ERBB2 L755S colon cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) inhibited colony formation in transformed mouse colon epithelial cells over expressing ERBB2 (HER2) L755S in culture (PMID: 26243863). 26243863
ERBB2 L755S breast cancer resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed breast epithelial cells expressing ERBB2 (HER2) L755S were resistant to Tykerb (lapatinib) in culture (PMID: 31135266). 31135266
ERBB2 L755S Her2-receptor negative breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in complete response in 1 patient, partial response in 1 patient, stable disease in 2 patients, and progressive disease in 4 patients with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) L755S (PMID: 29420467; NCT01953926). 29420467
ERBB2 L755S Her2-receptor positive breast cancer resistant Lapatinib Preclinical - Cell culture Actionable In a preclinical study, expression of ERBB2 (HER2) L755S conferred resistance to Tykerb (lapatinib) in ERBB2 (HER2)-positive breast cancer cell lines in culture (PMID: 28487443). 28487443
APC Q1429fs BRAF N581S ERBB2 L755S rectum adenocarcinoma no benefit Fluorouracil + Leucovorin + Trastuzumab Case Reports/Case Series Actionable In a clinical case study, a rectal adenocarcinoma patient harboring APC Q1429fs, BRAF N581S, and ERBB2 L755S did not respond to Herceptin (trastuzumab) treatment in combination with Fluorouracil and Wellcovorin (leucovorin) (PMID: 27626067). 27626067
ERBB2 L755S PIK3CA H1047R breast cancer resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring ERBB2 (HER2) L755S and PIK3CA H1047R demonstrated resistance to Nerlynx (neratinib) in culture (PMID: 31978326). 31978326
ERBB2 L755S PIK3CA H1047R breast cancer sensitive HER2 Inhibitor Everolimus + Neratinib Preclinical - Cell culture Actionable In a preclinical study, Afinitor (everolimus) and Nerlynx (neratinib) worked synergistically to inhibit viability of a breast cancer cell line harboring ERBB2 (HER2) L755S and PIK3CA H1047R in culture (PMID: 31978326). 31978326
ERBB2 L768S breast cancer sensitive Lapatinib Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) L768S were sensitive to Tykerb (lapatinib) in culture, resulting in decreased colony formation (PMID: 27697991). 27697991
ERBB2 L768S breast cancer sensitive Trastuzumab Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) L768S were sensitive to Herceptin (trastuzumab) in culture, resulting in decreased colony formation (PMID: 27697991). 27697991
ERBB2 L768S breast cancer sensitive HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed human breast cells expressing ERBB2 (HER2) L768S were sensitive to Nerlynx (neratinib) in culture, resulting in decreased colony formation (PMID: 27697991). 27697991
ERBB2 exon20 lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Phase II Actionable In a Phase II trial, non-small cell lung cancer patients harboring an ERBB2 exon 20 mutation demonstrated an objective response rate of 53.3% (8/15) and a median progression-free survival of 6.4 months when treated with Pyrotinib (PMID: 30596880; NCT02535507). 30596880
ERBB2 exon20 lung non-small cell carcinoma no benefit HER inhibitor (Pan) Afatinib Phase II Actionable In a Phase II trial, Gilotrif (afatinib) monotherapy was tolerated but did not result in clinical benefit in patients with advanced non-small cell lung cancer harboring ERBB2 (HER2) exon 20 mutations who had not received tyrosine kinase inhibitor therapy, with no patient (0/18) achieved objective response and 61.1% (11/18) of patients achieved stable disease as best response (PMID: 32738416). 32738416
ERBB2 P780L Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) P780L in culture (PMID: 18413839). 18413839
ERBB2 P780L Advanced Solid Tumor resistant Lapatinib Preclinical Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) P780L demonstrated resistance to treatment with Tykerb (lapatinib) (PMID: 18413839). 18413839
ERBB2 G778A colorectal cancer predicted - resistant HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in progressive disease with a progression-free survival of 1.9 months in a patient with colorectal cancer harboring ERBB2 (HER2) G778A (PMID: 29420467; NCT01953926). 29420467
ERBB2 M774delinsWLV ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, acquisition of ERBB2 (HER2) C805S in transformed cells expressing ERBB2 (HER2) M774delinsWLV conferred resistance to Vizimpro (dacomitinib) in culture (PMID: 28363995). 28363995
ERBB2 M774delinsWLV ERBB2 C805S Advanced Solid Tumor resistant HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells co-expressing ERBB2 (HER2) M774delinsWLV and ERBB2 (HER2) C805S demonstrated resistance to Nerlynx (neratinib) in culture (PMID: 28363995). 28363995
ERBB2 M774delinsWLV ERBB2 C805S Advanced Solid Tumor resistant HER inhibitor (Pan) Afatinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells co-expressing ERBB2 (HER2) M774delinsWLV and ERBB2 (HER2) C805S demonstrated resistance to Gilotrif (afatinib) in culture (PMID: 28363995). 28363995
ERBB2 G309A breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 G309A demonstrated growth inhibition when treated with Tykerb (lapatinib) (PMID: 23220880). 23220880
ERBB2 G309A breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) G309A demonstrated growth inhibition when treated with Nerlynx (neratinib) (PMID: 23220880). 23220880
ERBB2 G309A breast cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 G309A reverted to normal morphology in culture upon Herceptin (trastuzumab) treatment (PMID: 23220880). 23220880
ERBB2 E812K Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, transformed cells over expressing ERBB2 (HER2) E812K demonstrated reduced sensitivity to Tykerb (lapatinib) in culture (PMID: 18413839). 18413839
ERBB2 E812K Advanced Solid Tumor sensitive HER2 Inhibitor Tesevatinib Preclinical Actionable In a preclinical study, XL647 inhibited survival of transformed cells over expressing ERBB2 (HER2) E812K in culture (PMID: 18413839). 18413839
ERBB2 E812K lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Poziotinib Case Reports/Case Series Actionable In a Phase II trial, Poziotinib (HM781-36B) treatment resulted in stable disease in a patient with lung adenocarcinoma harboring ERBB2 (HER2) E812K (PMID: 30149884; NCT02979821). 30149884
ERBB2 wild-type Advanced Solid Tumor sensitive Osimertinib Preclinical Actionable In a preclinical study, Tagrisso (osimertinib) treatment resulted in antitumor efficacy in cells overexpressing wild-type ERBB2 (HER2), demonstrating inhibition of ERBB2 (HER2) phosphorylation and cell growth in culture and tumor regression in mouse models overexpressing wild-type ERBB2, with an 80% reduction in tumor volume (PMID: 29298799). 29298799
ERBB2 wild-type Advanced Solid Tumor sensitive HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, AEE788 inhibited proliferation of transformed cell lines expressing wild-type ERBB2 (HER2) in culture (PMID: 22046346). 22046346
ERBB2 wild-type Advanced Solid Tumor sensitive Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) inhibited proliferation of transformed cell lines expressing wild-type ERBB2 (HER2) in culture (PMID: 22046346). 22046346
ERBB2 N857S Advanced Solid Tumor sensitive HER2 Inhibitor AEE788 Preclinical Actionable In a preclinical study, AEE788 inhibited proliferation of transformed cell lines expressing ERBB2(HER2) N857S in culture (PMID: 22046346). 22046346
ERBB2 N857S Advanced Solid Tumor decreased response Lapatinib Preclinical Actionable In a preclinical study, higher dose of Tykerb (lapatinib) inhibited proliferation of transformed cell lines expressing ERBB2 (HER2) N857S in culture (PMID: 22046346). 22046346
ERBB2 G776_V777insYVMA Advanced Solid Tumor sensitive HER inhibitor (Pan) Canertinib Preclinical Actionable In a preclinical study, Canertinib inhibited Erbb2 (Her2) phosphorylation and cell growth in transformed human cell lines expressing ERBB2 (HER2) G776_V777insYVMA (PMID: 16843263). 16843263
ERBB2 G778_P780dup Advanced Solid Tumor decreased response Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G778_P780dup (reported as P780_Y781insGSP) demonstrated decreased response to Tagrisso (osimertinib) compared to Poziotinib (HM781-36B) in culture (PMID: 30527195). 30527195
ERBB2 G778_P780dup Advanced Solid Tumor decreased response Osimertinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) P780_Y781insGSP were resistant to Tagrisso (osimertinib) in culture (PMID: 31588020). 31588020
ERBB2 G778_P780dup Advanced Solid Tumor conflicting HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G778_P780dup (also referred to as P780_Y781insGSP) in culture (PMID: 28363995). 28363995
ERBB2 G778_P780dup Advanced Solid Tumor conflicting HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G778_P780dup were resistant to Vizimpro (dacomitinib) in culture (PMID: 31588020). 31588020
ERBB2 G778_P780dup Advanced Solid Tumor sensitive HER2 Inhibitor Tarloxotinib Preclinical - Cell culture Actionable In a preclinical study, Tarloxotinib (TRLX) inhibited survival of transformed cells expressing ERBB2 (HER2) G778_P780dup in culture (PMID: 31588020). 31588020
ERBB2 G778_P780dup breast cancer resistant Trastuzumab Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 P780_Y781insGSP demonstrated resistance when treated with Herceptin (trastuzumab) (PMID: 23220880). 23220880
ERBB2 G778_P780dup breast cancer sensitive HER inhibitor (Pan) Ado-trastuzumab emtansine + Poziotinib Preclinical - Cell culture Actionable In a preclinical study, addition of Poziotinib (HM781-36B) enhanced growth inhibition by Kadcyla (ado-trastuzumab emtansine) treatment in breast cancer cells expressing ERBB2 (HER2) G778_P780dup in culture (PMID: 31588020). 31588020
ERBB2 G778_P780dup lung non-small cell carcinoma no benefit HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in stable disease with a progression-free survival over 17 months in 2 patients with non-small cell lung cancer harboring ERBB2 (HER2) G778_P780dup (PMID: 29420467; NCT01953926). 29420467
ERBB2 G778_P780dup Advanced Solid Tumor resistant Nazartinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G778_P780dup were resistant to Nazartinib (EGF816) in culture (PMID: 31588020). 31588020
ERBB2 G778_P780dup Advanced Solid Tumor conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G778_P780dup (also referred to as P780_Y781insGSP) in culture (PMID: 28363995). 28363995
ERBB2 G778_P780dup Advanced Solid Tumor conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) G778_P780dup were resistant to Nerlynx (neratinib) in culture (PMID: 31588020). 31588020
ERBB2 G778_P780dup Advanced Solid Tumor conflicting HER2 Inhibitor Neratinib Preclinical - Cell culture Actionable In a preclinical study, transformed cells expressing ERBB2 (HER2) P780_Y781insGSP demonstrated decreased response to Nerlynx (neratinib) compared to Poziotinib (HM781-36B) in culture (PMID: 30527195). 30527195
ERBB2 G778_P780dup lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical study, five lung adenocarcinoma patients each harboring ERBB2 (HER2) G778_P780dup (also reported as P780_Y781insGSP) demonstrated a clinical benefit from treatment with Gilotrif (afatinib), including one patient with a partial response lasting nine months, a second patient demonstrating a 51% reduction in primary tumor size after one month with a partial response lasting eight months, and three patients with stable disease ranging from 6 to 9 months (PMID: 32036069). 32036069
ERBB2 G778_P780dup lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Clinical Study - Cohort Actionable In a retrospective study, Gilotrif (afatinib) treatment resulted in an objective response rate (ORR) of 15.6% (5/32) and a disease control rate of 68.8% (22/32) in patients with lung adenocarcinoma harboring ERBB2 (HER2) mutations, patients harboring G776delinsVC (n=5) or G778_P780dup (n=5) achieved longer median progression-free survival (7.6 mo) than those with Y772_A775dup (n=14, 1.2 mo) or missense mutations (n=8, 3.6 mo), with an ORR of 40% (4/10) and a DCR of 100% (10/10) (PMID: 32162827). 32162827
ERBB2 G778_P780dup lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical study, a lung adenocarcinoma patient harboring ERBB2 (HER2) G778_P780dup (also referred to as V747_G748insGSP and G748_P750dup), demonstrated a 13% regression of target lesions and stable disease for 11 months following treatment with pulse Gilotrif (afatinib) (PMID: 26964772). 26964772
ERBB2 G778_P780dup lung adenocarcinoma predicted - sensitive HER inhibitor (Pan) Afatinib Case Reports/Case Series Actionable In a clinical case study, a patient with metastatic lung adenocarcinoma harboring ERBB2 (HER2) G778_P780dup (also referred to as V777_G778insGSP) demonstrated tumor shrinkage and clinical response for 7 months following treatment with Gilotrif (afatinib) (PMID: 28363995). 28363995
ERBB2 G778_P780dup lung cancer sensitive HER inhibitor (Pan) Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited Erbb2 (Her2) phosphorylation and downstream signaling in bronchial epithelial cells expressing ERBB2 (HER2) G778_P780dup (also referred to as P780_Y781insGSP) in culture (PMID: 26545934). 26545934
ERBB2 G778_P780dup Her2-receptor negative breast cancer predicted - sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial (SUMMIT), Nerlynx (neratinib) treatment resulted in partial response with a progression-free survival of 3.5 months in one patient, and stable disease with a progression-free survival of 20.0 months in another patient with Erbb2 (Her2) receptor negative (non-amplified) breast cancer harboring ERBB2 (HER2) G778_P780dup (PMID: 29420467; NCT01953926). 29420467
ERBB2 G778_P780dup Her2-receptor positive breast cancer predicted - resistant Lapatinib Case Reports/Case Series Actionable In a clinical case study, ERBB2 (HER2) G778_P780dup (reported as P780_Y781insGSP) was identified in a patient with ERBB2 (HER2)-positive breast cancer at the time of disease progression while on Tykerb (lapatinib) treatment (PMID: 31980423). 31980423
ERBB2 G778_P780dup breast cancer predicted - sensitive Lapatinib + Perifosine Preclinical - Cell culture Actionable In a preclinical study, addition of Perifosine restored sensitivity to Tykerb (lapatinib) in breast epithelial cells expressing ERBB2 (HER2) G778_P780dup (reported as P780_Y781insGSP in culture (PMID: 31980423). 31980423
ERBB2 G778_P780dup lung non-small cell carcinoma predicted - sensitive HER2 Inhibitor Pyrotinib Case Reports/Case Series Actionable In a Phase II trial, Pyrotinib treatment resulted in an objective response rate of 60% (3/5) in non-small cell lung cancer patients harboring ERBB2 (HER2) G778_P780dup (also reported as P780_Y781insGSP) who had received prior platinum-based chemotherapy (PMID: 32614698; NCT02834936). 32614698
ERBB2 G778_P780dup breast cancer sensitive HER2 Inhibitor Neratinib Case Reports/Case Series Actionable In a Phase II trial, Nerlynx (neratinib) treatment resulted in a clinical benefit rate of 31% (5/16) in metastatic breast cancer patients harboring ERBB2 (HER2) mutations, with 1 complete response (referred to as V777_G778insGSP) and 1 stable disease for more than 24 weeks (referred to as P780_Y781insGSP) in 3 patients harboring ERBB2 G778_P780dup (PMID: 28679771; NCT01670877). 28679771
ERBB2 G778_P780dup breast cancer sensitive HER2 Inhibitor Neratinib Preclinical Actionable In a preclinical study, transformed human breast cell lines expressing ERBB2 (HER2) P780_Y781insGSP reverted to normal morphology in culture upon Nerlynx (neratinib) treatment (PMID: 23220880).