Reference Detail

Ref Type Journal Article
PMID (26243863)
Authors Kavuri SM, Jain N, Galimi F, Cottino F, Leto SM, Migliardi G, Searleman AC, Shen W, Monsey J, Trusolino L, Jacobs SA, Bertotti A, Bose R
Title HER2 activating mutations are targets for colorectal cancer treatment.
Journal Cancer discovery
Vol 5
Issue 8
Date 2015 Aug
URL
Abstract Text The Cancer Genome Atlas project identified HER2 somatic mutations and gene amplification in 7% of patients with colorectal cancer. Introduction of the HER2 mutations S310F, L755S, V777L, V842I, and L866M into colon epithelial cells increased signaling pathways and anchorage-independent cell growth, indicating that they are activating mutations. Introduction of these HER2 activating mutations into colorectal cancer cell lines produced resistance to cetuximab and panitumumab by sustaining MAPK phosphorylation. HER2 mutants are potently inhibited by low nanomolar doses of the irreversible tyrosine kinase inhibitors neratinib and afatinib. HER2 gene sequencing of 48 cetuximab-resistant, quadruple (KRAS, NRAS, BRAF, and PIK3CA) wild-type (WT) colorectal cancer patient-derived xenografts (PDX) identified 4 PDXs with HER2 mutations. HER2-targeted therapies were tested on two PDXs. Treatment with a single HER2-targeted drug (trastuzumab, neratinib, or lapatinib) delayed tumor growth, but dual HER2-targeted therapy with trastuzumab plus tyrosine kinase inhibitors produced regression of these HER2-mutated PDXs.HER2 activating mutations cause EGFR antibody resistance in colorectal cell lines, and PDXs with HER2 mutations show durable tumor regression when treated with dual HER2-targeted therapy. These data provide a strong preclinical rationale for clinical trials targeting HER2 activating mutations in metastatic colorectal cancer.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Variant Impact Protein Effect Variant Description Associated with drug Resistance
L866M missense gain of function ERBB2 (HER2) L866M lies within the protein kinase domain of the Erbb2 (Her2) protein (UniProt.org). L866M results in constitutive phosphorylation of Erbb2 (Her2) and increased phosphorylation of Mapk in cell culture (PMID: 26243863).
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
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 S310Y colorectal cancer sensitive Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) delayed tumor growth in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) S310Y (PMID: 26243863). 26243863
ERBB2 S310Y colorectal cancer sensitive Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) delayed tumor growth in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) S310Y (PMID: 26243863). 26243863
ERBB2 V842I colon cancer sensitive 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 L755S colorectal cancer sensitive 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 V777L colorectal cancer conflicting 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 colorectal cancer sensitive 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 L866M 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) L866M 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 L866M colorectal cancer sensitive Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) L866M in culture (PMID: 26243863). 26243863
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 colorectal cancer conflicting 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 amp ERBB2 L866M colorectal cancer sensitive 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 L755S colorectal cancer sensitive 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 S310F colorectal cancer sensitive 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
KRAS G12V colorectal cancer decreased response Neratinib Preclinical Actionable In a preclinical study, colorectal cancer cells harboring KRAS G12V were less sensitive to Nerlynx (neratinib) induced growth inhibition in culture (PMID: 26243863). 26243863
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 L866M colon cancer sensitive Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited colony formation in transformed mouse colon epithelial cells over expressing ERBB2 (HER2) L866M in culture (PMID: 26243863). 26243863
ERBB2 amp ERBB2 L866M 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 amp ERBB2 L866M colorectal cancer sensitive 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 S310F colon cancer sensitive 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 S310Y colorectal cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) delayed tumor growth in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) S310Y (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 colorectal cancer conflicting 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
KRAS G13D colorectal cancer decreased response Neratinib Preclinical Actionable In a preclinical study, colorectal cancer cells harboring KRAS G13D were less sensitive to Nerlynx (neratinib) induced growth inhibition in culture (PMID: 26243863). 26243863
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 V842I colorectal cancer sensitive 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 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 S310Y colorectal cancer sensitive Neratinib + Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) and Nerlynx (neratinib) combination treatment resulted in tumor regression in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) S310Y (PMID: 26243863). 26243863
ERBB2 L755S colon cancer sensitive 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 V777L colon cancer sensitive 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
KRAS G12D colorectal cancer resistant Neratinib + Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) and Nerlynx (neratinib) combination treatment resulted in continued tumor growth in xenograft models of patient derived colorectal cancer cells harboring KRAS G12D (PMID: 26243863). 26243863
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 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 S310Y colorectal cancer sensitive Lapatinib + Trastuzumab Preclinical Actionable In a preclinical study, Herceptin (trastuzumab) and Tykerb (lapatinib) combination treatment resulted in tumor regression in xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) S310Y (PMID: 26243863). 26243863
ERBB2 S310Y colorectal cancer resistant Cetuximab Preclinical Actionable In a preclinical study, xenograft models of patient derived colorectal cancer cells harboring ERBB2 (HER2) S310Y were resistant to Erbitux (cetuximab) (PMID: 26243863). 26243863
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 L866M colorectal cancer resistant Cetuximab Preclinical Actionable In a preclinical study, colorectal cancer cells over expressing ERBB2 (HER2) L866M were resistant to Erbitux (cetuximab) in culture (PMID: 26243863). 26243863
KRAS G12D colorectal cancer resistant Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) treatment resulted in continued tumor growth in xenograft models of patient derived colorectal cancer cells harboring KRAS G12D (PMID: 26243863). 26243863
ERBB2 V777L colorectal cancer sensitive 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 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 amp ERBB2 L866M 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 colorectal cancer sensitive Afatinib Preclinical Actionable In a preclinical study, Gilotrif (afatinib) inhibited growth of colorectal cancer cells over expressing ERBB2 (HER2) L866M in culture (PMID: 26243863). 26243863
ERBB2 L866M colorectal cancer resistant Panitumumab Preclinical Actionable In a preclinical study, colorectal cancer cells over expressing ERBB2 (HER2) L866M were resistant to Vectibix (panitumumab) in culture (PMID: 26243863). 26243863
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