Gene Variant Detail

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Gene PIK3CA
Variant H1047R
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions PIK3CA H1047R is a hotspot mutation that lies within the kinase domain of the Pik3ca protein (UniProt.org). H1047R results in increased phosphorylation of Akt and Mek1/2, growth factor-independent cell survival, and transformation in cell culture (PMID: 26627007, PMID: 29533785).
Associated Drug Resistance

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Transcript NM_006218.3
gDNA chr3:g.179234297A>G
cDNA c.3140A>G
Protein p.H1047R
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
XM_011512894 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_006713658 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_006713658.4 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
XM_011512894.2 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
NM_006218.3 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38
NM_006218 chr3:g.179234297A>G c.3140A>G p.H1047R RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
ERBB2 over exp PIK3CA H1047R Her2-receptor positive breast cancer resistant Lapatinib + Trastuzumab Preclinical Actionable In a preclinical study, a mouse breast cancer model with mammary ERBB2 (HER2) over-expression that also expressed the PIK3CA H1047R mutation showed resistance to the combination of Herceptin (trastuzumab) and Tykerb (lapatinib) (PMID: 23940356). 23940356
ERBB2 over exp PIK3CA H1047R Her2-receptor positive breast cancer sensitive Bevacizumab + Buparlisib Preclinical Actionable In a preclinical study, treatment with Buparlisib (BKM120) resulted in decreased tumor growth, but not tumor regression, in mouse models of ERBB2 (HER2)-over expressing breast cancer expressing PIK3CA H1047R (PMID: 23940356). 23940356
ERBB2 over exp PIK3CA H1047R stomach cancer predicted - resistant Trastuzumab Clinical Study - Cohort Actionable In a clinical study (AMNESIA-1), assessment of pre-treatment tumor samples from ERBB2 (HER2)-positive gastric or gastroesophageal cancer patients (defined as HER2 IHC 3+ or HER2 IHC 2+/ISH+) identified PIK3CA mutations in 15% (3/20) of patients demonstrating primary resistance to Herceptin (trastuzumab), including 1 patient harboring PIK3CA H1047R (PMID: 29208673). 29208673
ERBB2 over exp PIK3CA H1047R Her2-receptor positive breast cancer resistant Trastuzumab Preclinical Actionable In a preclinical study, mouse breast cancer models over expressing ERBB2 (HER2) and expressing PIK3CA H1047R were resistant to Herceptin (trastuzumab) (PMID: 23940356). 23940356
ERBB2 over exp PIK3CA H1047R Her2-receptor positive breast cancer sensitive Buparlisib + Pertuzumab + Trastuzumab Preclinical Actionable In a preclinical study, the combination of Buparlisib (BKM120), Herceptin (trastuzumab), and Perjeta (pertuzumab) inhibited tumor growth in mouse models of ERBB2 (HER2)-over expressing breast cancer expressing PIK3CA H1047R, with improved efficacy over Buparlisib (BKM120) alone (PMID: 23940356). 23940356
ERBB2 over exp PIK3CA H1047R Her2-receptor positive breast cancer no benefit Buparlisib + Lapatinib + Trastuzumab Preclinical Actionable In a preclinical study, the combination of Buparlisib (BKM120), Herceptin (trastuzumab), and Tykerb (lapatinib) inhibited tumor growth in mouse models of ERBB2 (HER2)-over expressing breast cancer expressing PIK3CA H1047R, but efficacy was not significantly improved over Buparlisib (BKM120) alone (PMID: 23940356). 23940356
ERBB2 over exp PIK3CA H1047R Her2-receptor positive breast cancer resistant Pertuzumab + Trastuzumab Preclinical Actionable In a preclinical study, a mouse breast cancer model with ERBB2 (HER2) over-expression that also expressed the PIK3CA H1047R mutation showed resistance to the combination of Heceptin (trastuzumab) and Perjeta (pertuzumab) (PMID: 23940356). 23940356
ERBB2 over exp PIK3CA H1047R Her2-receptor positive breast cancer sensitive Buparlisib + Trastuzumab Preclinical Actionable In a preclinical study, the combination of Herceptin (trastuzumab) and Buparlisib (BKM120) inhibited tumor growth in mouse ERBB2 (HER2)-over expressing breast cancer models expressing PIK3CA H1047R, with moderate efficacy over Buparlisib (BKM120) alone (PMID: 23940356). 23940356
PIK3CA H1047R breast cancer sensitive Dactolisib Preclinical Actionable In a preclinical study, BEZ235 inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047R in culture (PMID: 26627007). 26627007
PIK3CA H1047R head and neck squamous cell carcinoma resistant Cetuximab Preclinical - Cell culture Actionable In a preclinical study, head and neck squamous cell carcinoma cells harboring PIK3CA H1047R were resistant to Erbitux (cetuximab) in culture (PMID: 30962319). 30962319
PIK3CA H1047R breast cancer sensitive CYH33 Preclinical - Cell line xenograft Actionable In a preclinical study, CYH33 inhibited proliferation of breast cancer cell lines harboring PIK3CA H1047R in culture, inhibited tumor progression in a transgenic mouse model, and induced cell cycle arrest, and inhibited PI3K signaling and tumor growth in cell line xenograft models (PMID: 30003928). 30003928
PIK3CA H1047R head and neck squamous cell carcinoma sensitive Radiotherapy + Taselisib Preclinical Actionable In a preclinical study, Taselisib (GDC-0032) enhanced the effects of radiation induced apoptosis of head and neck squamous carcinoma cells harboring PIK3CA H1047R (PMID: 26589432). 26589432
PIK3CA H1047R progesterone-receptor positive breast cancer predicted - sensitive Everolimus Clinical Study - Cohort Actionable In a retrospective analysis, combination of Afinitor (everolimus) and hormone therapy resulted in improved median progression-free survival (8.8 vs 4.1 months, p=0.02) in patients with hormone receptor-positive metastatic breast cancer harboring PIK3CA H1047R (n=6) compared to patients without PIK3CA H1047R (n=10) (PMID: 31088410). 31088410
PIK3CA H1047R ovarian cancer sensitive PF-04691502 Preclinical - Cell line xenograft Actionable In a preclinical study, PF-04691502 inhibited Pi3k signaling, resulted in growth inhibition of ovarian cancer cells harboring PIK3CA H1047R in culture and in cell line xenograft models (PMID: 21750219). 21750219
PIK3CA H1047R lung cancer sensitive Dactolisib Preclinical Actionable In a preclinical study, BEZ235 reduced tumor size in mouse models of lung cancer carrying PIK3CA H1047R (PMID: 19029981). 19029981
PIK3CA H1047R colorectal cancer resistant Cetuximab + Fluorouracil Preclinical - Cell culture Actionable In a preclinical study, colorectal cancer cells over expressing PIK3CA H1047R were resistant to Erbitux (cetuximab) and Fluorouracil combination treatment in culture (PMID: 28424201). 28424201
PIK3CA H1047R lung squamous cell carcinoma sensitive Dactolisib Preclinical - Cell culture Actionable In a preclinical study, BEZ235 induced apoptosis, inhibited cell proliferation, migration, and invasion of lung squamous cell carcinoma cells over expressing PIK3CA H1047R in culture (PMID: 26013318). 26013318
PIK3CA H1047R thyroid gland cancer sensitive MK2206 + Temsirolimus Preclinical - Cell culture Actionable In a preclinical study, MK2206 and Torisel (temsirolimus) demonstrated synergy in inhibiting growth of an anaplastic thyroid cancer cell line harboring PIK3CA H1047R in culture (PMID: 21289267). 21289267
PIK3CA H1047R colorectal cancer sensitive Cetuximab Case Reports/Case Series Actionable In a retrospective analysis, Erbitux (cetuximab) combined with radiation therapy resulted in stable disease for 6 months in a colorectal carcinoma patient harboring a PIK3CA H1047R mutation (PMID: 25714871). 25714871
PIK3CA H1047R thyroid gland cancer sensitive MK2206 Preclinical - Cell culture Actionable In a preclinical study, MK2206 inhibited AKT activation, proliferation, and growth of thyroid cancer cell lines with PI3K/AKT pathway alterations in culture, including an anaplastic thyroid cancer cell line harboring PIK3CA H1047R (PMID: 21289267). 21289267
PIK3CA H1047R breast cancer sensitive Taselisib Phase I Actionable In a Phase I trial, four patients with breast cancer harboring PIK3CA H1047R demonstrated a confirmed partial response when treated with Taselisib (GDC-0032) (PMID: 28331003). 28331003
PIK3CA H1047R lung adenocarcinoma no benefit Sirolimus Preclinical Actionable In a preclinical study, Sirolimus (rapamycin) failed to inhibit tumor growth in a mouse lung adenocarcinoma model expressing the PIK3CA H1047R mutation (PMID: 19029981). 19029981
PIK3CA H1047R estrogen-receptor positive breast cancer predicted - sensitive Alpelisib + Fulvestrant Case Reports/Case Series Actionable In a clinical case study, Faslodex (fulvestrant) plus Piqray (Alpelisib) in an ER-positive, PR-positive, HER2-negative breast cancer patient harboring PIK3CA H1047R and TP53 H179Q induced moderate regression of multiple non-measurable brain metastases with no new or progressive lesions at 4 weeks, and resulted in stable CNS lesions at 10 weeks; however, the patient demonstrated progression in the liver, and a liquid biopsy showed acquisition of ESR1 Y537N with a 1.4% minor allele frequency (PMID: 32923889). 32923889
PIK3CA H1047R breast cancer sensitive Gedatolisib Preclinical Actionable In a preclinical study, Gedatolisib (PKI-587) inhibited growth of human breast cancer cells harboring PIK3CA H1047R in culture (PMID: 21325073, PMID: 17314276). 17314276 21325073
PIK3CA H1047R lung squamous cell carcinoma sensitive Buparlisib Preclinical - Cell culture Actionable In a preclinical study, Buparlisib (BKM120) induced apoptosis, inhibited cell proliferation, migration, and invasion of lung squamous cell carcinoma cells over expressing wild-type Pik3ca in culture (PMID: 26013318). 26013318
PIK3CA H1047R breast cancer sensitive ARQ 751 Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R demonstrated sensitivity to treatment with ARQ 751 in culture, resulting in inhibition of cell proliferation (PMID: 26469692). 26469692
PIK3CA H1047R Advanced Solid Tumor predicted - sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, Piqray (Alpelisib) decreased Akt phosphorylation and inhibited PI3K signaling, and demonstrated dose-dependent inhibition of survival in human pluripotent stem cells harboring PIK3CA H1047R in culture (PMID: 30948643). 30948643
PIK3CA H1047R stomach cancer sensitive Capivasertib Preclinical - Pdx Actionable In a preclinical study, AZD5363 inhibited growth in a patient-derived xenograft model of gastric cancer harboring a PIK3CA H1047R mutation (PMID: 24088382). 24088382
PIK3CA H1047R breast metaplastic carcinoma predicted - sensitive Buparlisib + Paclitaxel Case Reports/Case Series Actionable In a clinical case study, Buparlisib (BKM120) in combination with Taxol (paclitaxel) resulted in a durable partial response in a patient with breast metaplastic carcinoma harboring PIK3CA H1047R, with a total response period of 70 weeks and an overall survival of 42 months (PMID: 30577988). 30577988
PIK3CA H1047R Advanced Solid Tumor sensitive Trametinib Preclinical Actionable In a preclinical study, Mekinist (trametinib) inhibited survival of transformed cell lines overexpressing PIK3CA H1047R in culture (PMID: 26627007). 26627007
PIK3CA H1047R Her2-receptor negative breast cancer no benefit Everolimus Phase III Actionable In a retrospective analysis of a Phase III trial (BOLERO-2), Afinitor (everolimus) demonstrated comparable progression-free survival benefit in patients with hormone receptor-positive, Erbb2 (Her2)-negative breast cancer harboring wild-type (HR=0.43) or mutant (HR=0.37) PIK3CA, similar benefit was observed in subgroups harboring PIK3CA H1047R (HR=0.37) and PIK3CA E545K/E542K (HR=0.30) (PMID: 28183140; NCT00863655). 28183140
PIK3CA H1047R estrogen-receptor positive breast cancer predicted - sensitive Alpelisib + Fulvestrant + Zoledronic acid Case Reports/Case Series Actionable In a clinical case study, Faslodex (fulvestrant) treatment in combination with Piqray (Alpelisib) and Zoledronic acid in a metastatic ER-positive, PR-positive, HER2-negative breast cancer patient harboring PIK3CA H1047R and PIK3C2B amplification reduced the left cerebellar lesion from 12 mm to 9 mm; the subsequent brain scans showed a stable central nervous system lesion at 2 months, and stable disease at 3, 4, and 6 months (PMID: 32923889). 32923889
PIK3CA H1047R urinary bladder cancer sensitive Dactolisib Preclinical - Pdx Actionable In a preclinical study, BEZ235 inhibited tumor growth in a patient-derived xenograft (PDX) model of bladder cancer harboring PIK3CA H1047R (PMID: 26270481). 26270481
PIK3CA H1047R estrogen-receptor positive breast cancer no benefit Fulvestrant + Palbociclib Case Reports/Case Series Actionable In a clinical case study, a metastatic ER-positive, PR-positive, HER2-negative breast cancer patient harboring PIK3CA H1047R and PIK3C2B amplification treated with Faslodex (fulvestrant) in combination with Ibrance (palbociclib) demonstrated disease progression with increased left cerebellar lesion four months following treatment (PMID: 32923889). 32923889
PIK3CA H1047R transitional cell carcinoma no benefit Buparlisib Case Reports/Case Series Actionable In a Phase II trial, Buparlisib (BKM120) treatment resulted in progressive disease in a patient with metastatic urothelial carcinoma harboring PIK3CA H1047R (PMID: 32767682; NCT01551030). 32767682
PIK3CA H1047R lung squamous cell carcinoma sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, Alpelisib (BYL719) induced apoptosis, inhibited cell proliferation, migration, and invasion of lung squamous cell carcinoma cells over expressing PIK3CA H1047R in culture (PMID: 26013318). 26013318
PIK3CA H1047R Advanced Solid Tumor sensitive A66 Preclinical Actionable In a preclinical study, A66 delayed tumor growth in human tumor xenograft models harboring PIK3CA H1047R mutations (PMID: 21668414). 21668414
PIK3CA H1047R oral squamous cell carcinoma decreased response Ribociclib Preclinical - Cell culture Actionable In a preclinical study, oral squamous cell carcinoma cells expressing PIK3CA H1047R demonstrated reduced sensitivity to Kisqali (ribociclib) treatment compared to cells expressing wild-type PIK3CA in culture (PMID: 31516747). 31516747
PIK3CA H1047R breast cancer sensitive M2698 Preclinical - Cell line xenograft Actionable In a preclinical study, a breast cancer xenograft model harboring PIK3CA H1047R was sensitive to M2698 (MSC2363318A), demonstrating inhibition of tumor growth (PMID: 27186432). 27186432
PIK3CA H1047R breast cancer sensitive Trametinib Preclinical Actionable In a preclinical study, Mekinist (trametinib) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047R in culture (PMID: 26627007). 26627007
PIK3CA H1047R ovarian cancer sensitive AZD8835 Preclinical Actionable In a preclinical study, AZD8835 inhibited tumor growth in mouse xenografts of ovarian cancer with a Pik3ca H1047R mutation (AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 2830). detail...
PIK3CA H1047R breast cancer sensitive Miransertib Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA H1047R demonstrated sensitivity to treatment with Miransertib (ARQ092) in culture, resulting in inhibition of cell proliferation (PMID: 26469692). 26469692
PIK3CA H1047R Advanced Solid Tumor sensitive Sirolimus Preclinical Actionable In a preclinical study, transformed cells expressing PIK3CA H1047R were sensitive to Rapamune (sirolimus), resulting in inhibition of transformation in culture (PMID: 15647370). 15647370
PIK3CA H1047R breast cancer sensitive Neratinib Preclinical Actionable In a preclinical study, Nerlynx (neratinib) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047R in culture (PMID: 26627007). 26627007
PIK3CA H1047R breast cancer sensitive Buparlisib Preclinical - Cell line xenograft Actionable In a preclinical study, a breast cancer cell line xenograft model harboring PIK3CA H1047R demonstrated tumor regression within the mammary fat pad when treated with Buparlisib (BKM120) (PMID: 28539475). 28539475
PIK3CA H1047R lung squamous cell carcinoma no benefit Taselisib Case Reports/Case Series Actionable In a Phase I (SWOG S1400B) trial, Taselisib (GDC-0032) treatment did not meet primary endpoint in patients with lung squamous cell carcinoma harboring PIK3CA mutations, none of the 4 patients harboring PIK3CA H1047R demonstrated response (PMID: 31158500; NCT02785913). 31158500
PIK3CA H1047R breast cancer sensitive Metformin Preclinical - Cell line xenograft Actionable In a preclinical study, Glucophage (metformin) inhibited cell proliferation of a dietary restriction-resistant PIK3CA H1047R-harboring human breast cancer cell line in culture, and inhibited tumor growth in xenograft models (PMID: 23986086). 23986086
PIK3CA H1047R oral squamous cell carcinoma decreased response Abemaciclib Preclinical - Cell culture Actionable In a preclinical study, oral squamous cell carcinoma cells expressing PIK3CA H1047R demonstrated reduced sensitivity to Verzenio (abemaciclib) treatment compared to cells expressing wild-type PIK3CA in culture (PMID: 31516747). 31516747
PIK3CA H1047R malignant glioma sensitive Buparlisib + Selumetinib Preclinical - Cell culture Actionable In a preclinical study, the combination therapy of Buparlisib (BKM120) and Koselugo (selumetinib) led to a synergistic effect, resulting in growth inhibition of astrocytoma cells expressing PIK3CA H1047R, but did not result in an effect as high as that seen in cells expressing PIK3CA R88Q or PIK3CA E542K in culture (PMID: 29975751). 29975751
PIK3CA H1047R breast cancer sensitive BAY1125976 Preclinical - Cell line xenograft Actionable In a preclinical study, BAY1125976 inhibited proliferation of breast cancer cell lines harboring PIK3CA H1047R in culture, and inhibited AKT signaling and tumor growth in a PIK3CA H1047R-mutant cell line xenograft model (PMID: 27699769). 27699769
PIK3CA H1047R head and neck squamous cell carcinoma sensitive Gedatolisib Preclinical - Cell culture Actionable In a preclinical study, head and neck squamous cell carcinoma cell lines harboring PIK3CA H1047R demonstrated sensitivity to treatment with Gedatolisib (PF-05212384) in culture (PMID: 25977343). 25977343
PIK3CA H1047R head and neck squamous cell carcinoma predicted - sensitive SHR-A1307 Preclinical - Cell culture Actionable In a preclinical study, head and neck squamous cell carcinoma cells harboring PIK3CA H1047R treated with SHR-A1307 demonstrated inhibition of cell growth in culture (PMID: 30962319). 30962319
PIK3CA H1047R ovarian cancer sensitive A66 Preclinical - Cell line xenograft Actionable In a preclinical study, A66 delayed tumor growth in an ovarian cancer cell line xenograft model harboring PIK3CA H1047R (PMID: 21668414). 21668414
PIK3CA H1047R estrogen-receptor positive breast cancer predicted - sensitive Everolimus Clinical Study - Cohort Actionable In a retrospective analysis, combination of Afinitor (everolimus) and hormone therapy resulted in improved median progression-free survival (8.8 vs 4.1 months, p=0.02) in patients with hormone receptor-positive metastatic breast cancer harboring PIK3CA H1047R (n=6) compared to patients without PIK3CA H1047R (n=10) (PMID: 31088410). 31088410
PIK3CA H1047R lung cancer no benefit Sirolimus Preclinical Actionable In a preclinical study, Sirolimus (rapamycin) did not induce tumor shrinkage in mouse lung cancer models carrying PIK3CA H1047R (PMID: 19029981). 19029981
PIK3CA H1047R lung adenocarcinoma sensitive Dactolisib Preclinical Actionable In a preclinical study, BEZ235 promoted tumor regression in a mouse lung adenocarcinoma model expressing PIK3CA H1047R (PMID: 19029981). 19029981
PIK3CA H1047R oral squamous cell carcinoma resistant Palbociclib Preclinical - Cell culture Actionable In a preclinical study, oral squamous cell carcinoma cells expressing PIK3CA H1047R demonstrated resistance to Ibrance (palbociclib) treatment in culture (PMID: 31516747). 31516747
PIK3CA H1047R breast cancer sensitive Borussertib Preclinical - Cell culture Actionable In a preclinical study, borussertib inhibited proliferation of a breast cancer cell line harboring PIK3CA H1047R in culture (PMID: 30858154). 30858154
PIK3CA H1047R breast cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of breast cancer cells harboring PIK3CA H1047R in culture (PMID: 21558396). 21558396
PIK3CA H1047R colorectal cancer sensitive Metformin Preclinical - Cell line xenograft Actionable In a preclinical study, Glucophage (metformin) demonstrated efficacy in treating dietary restriction-resistant human colorectal cancer cell line xenograft tumors harboring PIK3CA H1047R (PMID: 23986086). 23986086
PIK3CA H1047R breast cancer sensitive DHM25 Preclinical - Cell culture Actionable In a preclinical study, DHM25 increased cell death in breast cancer cell lines harboring PIK3CA H1047R in culture (PMID: 26237138). 26237138
PIK3CA H1047R ovarian cancer sensitive CH5132799 Phase I Actionable In a Phase I trial, CH5132799 demonstrated safety and preliminary efficacy in patients with advanced solid tumors, including a partial response in a patient with ovarian cancer harboring PIK3CA H1047R (PMID: 25231405). 25231405
PIK3CA H1047R urinary bladder cancer sensitive Cisplatin + Pictilisib Preclinical - Pdx Actionable In a preclinical study, combination of or sequential treatment with Pictilisib (GDC-0941) and Platinol (cisplatin) significantly delayed tumor growth and prolonged survival in patient-derived xenograft (PDX) models of bladder cancer harboring PIK3CA H1047R (PMID: 28808038). 28808038
PIK3CA H1047R head and neck squamous cell carcinoma predicted - sensitive Sulindac Preclinical - Cell culture Actionable In a preclinical study, head and neck squamous cell carcinoma cell lines harboring PIK3CA H1047R demonstrated increased sensitivity to Clinoril (sulindac) compared to cell lines with wild-type PIK3CA, resulting in decreased proliferation in culture (PMID: 30683736). 30683736
PIK3CA H1047R breast cancer sensitive Lapatinib Preclinical Actionable In a preclinical study, Tykerb (lapatinib) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047R in culture (PMID: 26627007). 26627007
PIK3CA H1047R urinary bladder cancer sensitive Pictilisib Preclinical - Pdx Actionable In a preclinical study, Pictilisib (GDC-0941) inhibited Akt phosphorylation and tumor growth, prolonged survival in patient-derived xenograft (PDX) models of bladder cancer harboring PIK3CA H1047R (PMID: 28808038). 28808038
PIK3CA H1047R Advanced Solid Tumor sensitive Rigosertib Sodium Preclinical - Cell culture Actionable In a preclinical study, Rigosertib (ON 01910.Na) inhibited oncogenic transformation in fibroblast cells over-expressing Pik3ca H1047R in culture (PMID: 27104980). 27104980
PIK3CA H1047R head and neck squamous cell carcinoma sensitive Sirolimus + Trametinib Preclinical - Cell line xenograft Actionable In a preclinical study, Rapamune (sirolimus) worked synergistically with Mekinist (trametinib) to inhibit proliferation of head and neck squamous carcinoma cell lines harboring PIK3CA H1047R in culture and to reduce tumor growth in cell line xenograft models (PMID: 26882569). 26882569
PIK3CA H1047R breast cancer sensitive Alpelisib Preclinical Actionable In a preclinical study, Alpelisib (BYL719) inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047R in culture (PMID: 26627007). 26627007
PIK3CA H1047R colon cancer sensitive T-2143 Preclinical - Cell line xenograft Actionable In a preclinical study, T-2143 treatment inhibited Akt phosphorylation and proliferation of colon cancer cells harboring PIK3CA H1047R in culture, and inhibited tumor growth in a cell line xenograft model (PMID: 32499300). 32499300
PIK3CA H1047R breast cancer sensitive MK2206 Preclinical Actionable In a preclinical study, MK2206 inhibited survival of transformed breast epithelial cell lines overexpressing PIK3CA H1047R in culture (PMID: 26627007). 26627007
PIK3CA P539R PIK3CA H1047R breast cancer sensitive PF-04691502 Preclinical - Cell culture Actionable In a preclinical study, PF-04691502 inhibited Akt phosphorylation and proliferation of breast cancer cells harboring both PIK3CA P539R and H1047R in culture (PMID: 21750219). 21750219
PIK3CA P539R PIK3CA H1047R breast cancer sensitive ARQ 751 Preclinical - Cell culture Actionable In a preclinical study, a breast cancer cell line harboring PIK3CA P539R and PH1047R was sensitive to ARQ 751 in culture, demonstrating inhibition of cell growth (PMID: 26469692). 26469692
PIK3CA P539R PIK3CA H1047R breast cancer sensitive Miransertib Preclinical - Cell culture Actionable In a preclinical study, breast cancer cells harboring PIK3CA P539R and H1047R were sensitive to Miransertib (ARQ092) in culture, demonstrating inhibition of cell growth (PMID: 26469692). 26469692
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 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 + 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 over exp PIK3CA H1047R SRC over exp urinary bladder cancer no benefit Lapatinib Preclinical - Pdx Actionable In a preclinical study, treatment with Tykerb (lapatinib) was not effective in inhibiting tumor growth in a patient-derived xenograft (PDX) model of bladder cancer with ERBB2 (HER2) over expression, which also over expressed SRC and harbored PIK3CA H1047R (PMID: 26270481). 26270481
ERBB2 over exp PIK3CA H1047R SRC over exp urinary bladder cancer no benefit Ponatinib Preclinical - Pdx Actionable In a preclinical study, treatment with Iclusig (ponatinib) was not effective in inhibiting tumor growth in a patient-derived xenograft (PDX) model of bladder cancer with SRC over expression, which also over expressed ERBB2 (HER2) and harbored PIK3CA H1047R (PMID: 26270481). 26270481
ERBB2 pos PIK3CA H1047R Her2-receptor positive breast cancer sensitive Ado-trastuzumab emtansine Preclinical - Cell line xenograft Actionable In a preclinical study, Kadcyla (trastuzumab emtansine) inhibited survival of Herceptin (trastuzumab)-resistant ERBB2 (HER2) positive breast cancer cells harboring PIK3CA H1047R in culture, and induced tumor regression in cell line xenograft models (PMID: 26920887). 26920887
ERBB2 pos PIK3CA H1047R Her2-receptor positive breast cancer predicted - sensitive Neratinib Phase III Actionable In a Phase III trial (ExteNET), Nerlynx (neratinib) treatment resulted in improved 5-year invasive disease-free survival (92.4% vs 84.5%, HR=0.41, p=0.028) and clinical benefit (HR=0.40, p=0.041) compared to placebo in patients with ERBB2 (HER2)-positive early breast cancer who completed trastuzumab-based adjuvant therapy, and harbored PIK3CA amplification (n=61) or mutations (n=210), including H1047R (n=110), E542K (n=18), and E545K/D (n=82) (PMID: 30867034; NCT00878709). 30867034
BRAF V600E PIK3CA H1047R colorectal cancer predicted - sensitive MK2206 Preclinical - Cell line xenograft Actionable In a preclinical study, MK2206 treatment resulted in a modest tumor growth inhibition in a cell line xenograft model of colorectal cancer harboring BRAF V600E and PIK3CA H1047R (PMID: 22180495). 22180495
BRAF V600E PIK3CA H1047R thyroid gland carcinoma predicted - sensitive Dabrafenib + Everolimus + Trametinib Case Reports/Case Series Actionable In a clinical case study, a patient with anaplastic thyroid carcinoma co-harboring BRAF V600E and PIK3CA H1047R demonstrated tumor regression when treated with the triple combination, Tafinlar (dabrafenib), Mekinist (trametinib), and Afinitor (everolimus) (PMID: 27797976). 27797976
BRAF V600E PIK3CA H1047R colorectal cancer resistant Vemurafenib Preclinical - Cell line xenograft Actionable In a preclinical study, Zelboraf (vemurafenib) treatment did not inhibit proliferation of colorectal cancer cells harboring BRAF V600E and PIK3CA H1047R in culture, and did not inhibit tumor growth in a cell line xenograft model (PMID: 22180495). 22180495
BRAF V600E PIK3CA H1047R thyroid gland carcinoma resistant Dabrafenib + Trametinib Case Reports/Case Series Actionable In a clinical case study, a patient with anaplastic thyroid carcinoma co-harboring BRAF V600E and PIK3CA H1047R demonstrated resistance to the combination therapy, Mekinist (trametinib) and Tafinlar (dabrafenib) (PMID: 27797976). 27797976
BRAF V600E PIK3CA H1047R thyroid gland carcinoma resistant Everolimus Case Reports/Case Series Actionable In a clinical case study, a patient with anaplastic thyroid carcinoma co-harboring BRAF V600E and PIK3CA H1047R demonstrated resistance to treatment with Afinitor (everolimus) (PMID: 27797976). 27797976
BRAF V600E PIK3CA H1047R colorectal cancer sensitive MK2206 + Vemurafenib Preclinical - Cell line xenograft Actionable In a preclinical study, Zelboraf (vemurafenib) treatment in combination with MK2206 induced apoptosis and synergistically inhibited proliferation of colorectal cancer cells harboring BRAF V600E and PIK3CA H1047R in culture, and inhibited tumor growth in a cell line xenograft model (PMID: 22180495). 22180495
AKT1 over exp PIK3CA H1047R breast cancer resistant Alpelisib Preclinical - Cell culture Actionable In a preclinical study, Akt1 over expression in breast cancer cells harboring PIK3CA H1047R resulted in resistance to Alpelisib (BYL719) in culture (PMID: 27604488). 27604488
NRAS mut PIK3CA H1047R melanoma predicted - resistant Trametinib Preclinical - Cell culture Actionable In a preclinical study, one of two NRAS-mutant melanoma cell lines expressing PIK3CA H1047R demonstrated resistance to treatment with Mekinist (trametinib) in culture (PMID: 30819666). 30819666
PIK3CA E726K PIK3CA H1047R breast cancer sensitive GDC-0077 Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E726K and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by GDC-0077 treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Everolimus Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E726K and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Afinitor (everolimus) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E726K PIK3CA H1047R breast cancer sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E726 and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Piqray (Alpelisib) treatment compared to cells expressing individual PIK3CA mutations in culture, while cells expressing PIK3CA E726 and PIK3CA H1047R in trans did not (PMID: 31699932). 31699932
PIK3CA E453Q PIK3CA H1047R breast cancer sensitive Alpelisib Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E543Q and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Piqray (Alpelisib) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E453Q PIK3CA H1047R breast cancer sensitive Everolimus Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E453Q and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by Afinitor (everolimus) treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
PIK3CA E453Q PIK3CA H1047R breast cancer sensitive GDC-0077 Preclinical - Cell culture Actionable In a preclinical study, breast epithelial cells expressing PIK3CA E453Q and PIK3CA H1047R in cis demonstrated increased sensitivity to growth inhibition by GDC-0077 treatment compared to cells expressing individual PIK3CA mutations in culture (PMID: 31699932). 31699932
ERBB2 G776V PIK3CA H1047R ovarian cancer sensitive 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 G776V PIK3CA H1047R ovarian cancer resistant 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 G778_P780dup PIK3CA H1047R breast cancer decreased response Neratinib Preclinical - Pdx Actionable In a preclinical study, Nerlynx (neratinib) resulted in a moderate delay of tumor growth in a breast cancer patient-derived xenograft model harboring ERBB2 (HER2) G778_P780dup and PIK3CA H1074R (PMID: 31978326). 31978326
ERBB2 V777L PIK3CA H1047R breast cancer resistant 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 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 L755S PIK3CA H1047R breast cancer sensitive 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 L755S PIK3CA H1047R breast cancer resistant 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
PIK3CA Q1033R PIK3CA H1047R Burkitt lymphoma predicted - sensitive Idelalisib Case Reports/Case Series Actionable In a clinical case study, Zydelig (idelalisib) treatment resulted in tumor shrinkage and decreased plasma LDH that continued for 10 months before recurrence in a patient with relapsed Burkitt lymphoma harboring PIK3CA H1047R and PIK3CA Q1033R (PMID: 32193631). 32193631
PIK3CA E81K PIK3CA E563K PIK3CA H1047R estrogen-receptor positive breast cancer predicted - sensitive Alpelisib + Exemestane Case Reports/Case Series Actionable In a clinical case study, Piqray (Alpelisib) treatment in combination with Aromasin (exemestane) resulted in stable disease in a metastatic ER-positive, PR-positive, HER2-negative breast cancer patient harboring PIK3CA H1047R, E81K, and E563K, and induced regression of lung and liver lesions, including an interval resolution of punctate cerebellar and cerebral metastasis, and reduction of a dural metastasis (PMID: 32923889). 32923889
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
PIK3CA act mut Advanced Solid Tumor predicted - sensitive Palbociclib + Taselisib Phase I Actionable In a Phase Ib trial (PIPA), the combination of Ibrance (palbociclib) with Taselisib (GDC-0032) was well tolerated in patients with advanced solid tumors harboring PIK3CA activating mutations and resulted in an objective response rate of 0% (0/12), a clinical benefit rate of 16.7% (2/12), and a median progression-free survival of 3.8 months (PMID: 32958578; NCT02389842). 32958578
PIK3CA act mut ovarian clear cell adenocarcinoma sensitive Dactolisib Preclinical Actionable In a preclinical study, BEZ235 demonstrated efficacy in mouse xenograft models of ovarian clear cell adenocarcinoma with PIK3CA mutations (PMID: 24927217). 24927217
PIK3CA act mut breast cancer predicted - sensitive Sapanisertib + WEHI-539 Preclinical - Cell culture Actionable In a preclinical study, the ATP-competitive mTORC1/2 inhibitor Sapanisertib (MLN0128) sensitized breast cancer cell lines harboring PIK3CA activating mutations to WEHI-539 in culture (PMID: 27974663). 27974663
PIK3CA act mut Advanced Solid Tumor sensitive Metformin Preclinical Actionable In a preclinical study, Glucophage (metformin) demonstrated efficacy in treating dietary restriction-resistant human xenograft tumors harboring a PIK3CA-activating mutation (PMID: 23986086). 23986086
PIK3CA act mut head and neck squamous cell carcinoma sensitive Gedatolisib Preclinical Actionable In a preclinical study, PF-05212384 decreased viability of head and neck squamous carcinoma cells harboring a PIK3CA activating mutation in cell culture (PMID: 24823695). 24823695
PIK3CA act mut triple-receptor negative breast cancer predicted - sensitive Capivasertib + Paclitaxel Phase II Actionable In a Phase II trial (PAKT), addition of Capivasertib (AZD5363) to Taxol (paclitaxel) as first-line therapy significantly improved median progression-free survival (9.3 vs 3.7 months, HR=0.30, p=0.01) and reduced risk (66%, HR=0.34, p=0.04) compared to Taxol (paclitaxel) alone in patients with metastatic triple-negative breast cancer harboring activating mutations in AKT1 (E17K, n=1) or PIK3CA (n=17), or inactivating mutations or gene loss in PTEN (n=13) (PMID: 31841354; NCT02423603). 31841354
PIK3CA act mut lung small cell carcinoma predicted - sensitive Navitoclax + Pictilisib Preclinical - Cell line xenograft Actionable In a preclinical study, the combination of Navitoclax (ABT-263) and GDC-0941 resulted in increased tumor growth delay and apoptosis in a small cell lung cancer cell line xenograft model harboring a PIK3CA activating mutation compared to either drug alone (PMID: 27197306). 27197306
PIK3CA act mut estrogen-receptor positive breast cancer predicted - sensitive Palbociclib + Taselisib Phase I Actionable In a Phase Ib trial (PIPA), the combination of Ibrance (palbociclib) with Taselisib (GDC-0032) was well tolerated in estrogen-receptor negative breast cancer patients harboring PIK3CA activating mutations and resulted in an objective response rate of 10% (1/10), a clinical benefit rate of 30% (4/10), and a median progression-free survival of 3.6 months (PMID: 32958578; NCT02389842). 32958578
PIK3CA act mut lung non-small cell carcinoma predicted - resistant Osimertinib Case Reports/Case Series Actionable In a retrospective analysis, activating PIK3CA mutations were identified in 6 of 100 patients with non-small cell lung cancer at treatment discontinuation of Tagrisso (osimertinib) (PMID: 31839416). 31839416
PIK3CA act mut Advanced Solid Tumor sensitive BAY1125976 Preclinical Actionable In a preclinical study, BAY1125976 demonstrated anti-tumor efficacy in multiple xenograft tumor models of different cancers with PIK3CA mutations or PTEN deletions and displayed synergy with other anti-cancer therapies (Cancer Res 2013;73(8 Suppl):Abstract nr 2050). detail...
PIK3CA act mut Advanced Solid Tumor sensitive GSK1059615 Preclinical Actionable In a preclinical study, solid tumor cell lines harboring PIK3CA activating mutations demonstrated increased sensitivity to GSK1059615 in culture (Clin Cancer Res October 1, 2008 14; B37). detail...
PIK3CA act mut breast cancer predicted - sensitive Torin 1 + WEHI-539 Preclinical - Cell culture Actionable In a preclinical study, the ATP-competitive mTORC1/2 inhibitor Torin1 sensitized breast cancer cell lines harboring PIK3CA activating mutations to WEHI-539 in culture (PMID: 27974663). 27974663
PIK3CA act mut lung non-small cell carcinoma sensitive Pictilisib Preclinical - Cell line xenograft Actionable In preclinical studies, the PI3K inhibitor GDC-0941 demonstrated efficacy against NSCLC tumor cell lines in culture and in xenograft models harboring alterations in the PI3K pathway (PMID: 23136191). 23136191
PIK3CA act mut breast cancer no benefit Buparlisib + WEHI-539 Preclinical - Cell culture Actionable In a preclinical study, Buparlisib (BKM120) did not sensitize breast cancer cell lines harboring PIK3CA activating mutations to WEHI-539 in culture (PMID: 27974663). 27974663
PIK3CA act mut Advanced Solid Tumor sensitive Everolimus Preclinical - Cell line xenograft Actionable In a preclinical study, Afinitor (everolimus) demonstrated efficacy in multiple cancer cell lines in culture and xenograft models with PIK3CA activating mutations (PMID: 20664172). 20664172
PIK3CA act mut lung squamous cell carcinoma predicted - sensitive Buparlisib Preclinical - Pdx Actionable In a preclinical study, Buparlisib (BKM120) treatment resulted in inhibition of AKT and S6 phosphorylation and durable responses in 4/5 lung squamous cell carcinoma patient-derived xenograft (PDX) models harboring PIK3CA E545K or E542K mutations, 3 that also had PIK3CA amplification and 1 with PTEN loss (PMID: 30093452). 30093452
PIK3CA act mut breast cancer no benefit Dactolisib + Venetoclax Preclinical - Cell culture Actionable In a preclinical study, inhibition of Pi3k signaling by BEZ235 did not sensitize breast cancer cell lines harboring PIK3CA activating mutations to Venclexta (venetoclax) in culture (PMID: 27974663). 27974663
PIK3CA act mut breast cancer predicted - sensitive Vistusertib + WEHI-539 Preclinical - Cell culture Actionable In a preclinical study, the ATP-competitive mTORC1/2 inhibitor Vistusertib (AZD2014) sensitized breast cancer cell lines harboring PIK3CA activating mutations to WEHI-539 in culture (PMID: 27974663). 27974663
PIK3CA act mut breast cancer predicted - sensitive Dactolisib + WEHI-539 Preclinical - Cell culture Actionable In a preclinical study, inhibition of Pi3k signaling by BEZ235 sensitized breast cancer cell lines harboring PIK3CA activating mutations to WEHI-539 in culture (PMID: 27974663). 27974663
PIK3CA act mut head and neck squamous cell carcinoma predicted - sensitive AZD8055 + Cetuximab Preclinical - Pdx Actionable In a preclinical study, two head and neck squamous cell carcinoma patient-derived xenograft (PDX) models harboring a PIK3CA activating mutation demonstrated greater delayed tumor growth when treated with a combination of AZD8055 and Erbitux (cetuximab) compared to either agent alone (PMID: 28446642). 28446642
PIK3CA act mut breast cancer predicted - sensitive MK2206 + Ridaforolimus Phase I Actionable In a Phase I clinical trial, Ridaforolimus in combination with MK-2206 demonstrated clinical activity in breast cancer patients expressing a PI3K pathway dependent gene expression signature, with complete response in 14.3% (2/14), partial response in 12.5% (2/16), and 2 patients achieving stable disease (PMID: 26187616). 26187616
PIK3CA act mut Advanced Solid Tumor conflicting Taselisib Preclinical - Cell line xenograft Actionable In a preclinical study, Taselisib (GDC-0032) effectively suppressed growth of multiple tumor types in cell line xenograft models, with greater selectivity for PIK3CA activating mutants (PMID: 23662903). 23662903
PIK3CA act mut Advanced Solid Tumor conflicting Taselisib Phase II Actionable In a Phase II (MATCH) trial, Taselisib (GDC-0032) treatment resulted in no objective response (0/65) but prolonged stable disease (estimated 6-month progression-free survival rate 27%) in patients with advanced solid tumors harboring PIK3CA activating mutations (J Clin Oncol 36, 2018 (suppl; abstr 101); NCT02465060). detail...
PIK3CA act mut estrogen-receptor positive breast cancer predicted - sensitive Capivasertib + Tamoxifen Preclinical - Cell culture Actionable In a preclinical study, the combination of AZD5363 and 4-hydroxytamoxifen (4-OHT) worked synergistically or additively to inhibit growth of several estrogen receptor-positive breast cancer cell lines in culture, including cell lines with PIK3CA activating mutations, and overcame tamoxifen resistance in a resistant cell line (PMID: 26116361). 26116361
PIK3CA act mut breast cancer no benefit Alpelisib + WEHI-539 Preclinical - Cell culture Actionable In a preclinical study, Alpelisib (BYL719) did not sensitize breast cancer cell lines harboring PIK3CA activating mutations to WEHI-539 in culture (PMID: 27974663). 27974663
PIK3CA act mut triple-receptor negative breast cancer predicted - sensitive Bevacizumab + Doxorubicin + Temsirolimus Phase I Actionable In a Phase I trial, triple-receptor negative breast cancer patients, including those with PIK3CA activating mutations, demonstrated an overall response rate of 21% (11/52) and clinical benefit rate of 40% (21/52) when treated with a combination of Avastin (bevacizumab), Adriamycin (doxorubicin), and either Afinitor (everolimus) or Torisel (temsirolimus) (PMID: 27893038). 27893038
PIK3CA act mut breast cancer sensitive Copanlisib Phase I Actionable In a Phase I clinical trial, treatment with Aliqopa (copanlisib) resulted in partial response in one and stable disease in another patient with breast cancer harboring activating PIK3CA mutations (PMID: 27672108; NCT00962611). 27672108
PIK3CA act mut breast cancer sensitive Copanlisib Preclinical Actionable In a preclinical study, breast cancer cell lines with a PIK3CA activating mutation and/or ERBB2 (HER2) over expression demonstrated increased sensitivity to inhibition of proliferation by Aliqopa (copanlisib) in culture, compared to ERBB2 (HER2)-negative and wild-type PIK3CA cell lines (PMID: 24170767). 24170767
PIK3CA act mut Advanced Solid Tumor sensitive Ipatasertib + Paclitaxel Phase Ib/II Actionable In a Phase Ib trial, Ipatasertib (GDC-0068) in combination with Abraxane (paclitaxel) demonstrated safety and anti-tumor activity in patients with advanced solid tumors, including patients with PIK3CA activating mutations (Annals of Oncology (2014) 25 (suppl_4): iv146-iv164. 10.1093/annonc/mdu331). detail...
PIK3CA act mut breast cancer sensitive MK2206 Preclinical Actionable In a preclinical study, breast cancer cell lines harboring activating mutations in PIK3CA had increased sensitivity to MK2206 in cell culture (PMID: 22932669). 22932669
PIK3CA act mut Advanced Solid Tumor sensitive Afuresertib Preclinical Actionable In a preclinical study, various tumor cell lines harboring PI3KCA activating mutations demonstrated increased sensitivity to Afuresertib (GSK2110183) in cultured cells (PMID: 24978597). 24978597
PIK3CA act mut lung squamous cell carcinoma predicted - sensitive Alpelisib Preclinical - Pdx Actionable In a preclinical study, Alpelisib (BYL719) treatment resulted in responses in multiple lung squamous cell carcinoma patient-derived xenograft (PDX) models harboring PIK3CA E545K or E542K mutations, including models with PIK3CA amplification or PTEN loss (PMID: 30093452). 30093452
PIK3CA act mut triple-receptor negative breast cancer predicted - sensitive Bevacizumab + Doxorubicin + Everolimus Phase I Actionable In a Phase I trial, triple-receptor negative breast cancer patients, including those with PIK3CA activating mutations, demonstrated an overall response rate of 21% (11/52) and clinical benefit rate of 40% (21/52) when treated with a combination of Avastin (bevacizumab), Adriamycin (doxorubicin), and either Afinitor (everolimus) or Torisel (temsirolimus) (PMID: 27893038). 27893038
PIK3CA mutant invasive bladder transitional cell carcinoma predicted - resistant Cisplatin + Gemcitabine + Sorafenib Phase II Actionable In a Phase II trial, PIK3CA mutations were more frequent in muscle-invasive urothelial bladder cancer patients that did not respond to Nexavar (sorafenib), Platinol (cisplatin) and Gemzar (gemcitabine) combination therapy than those who did respond (J Clin Oncol 35, 2017 (suppl 6S; abstract 345)). detail...
PIK3CA mutant endometrial cancer no benefit MK2206 Phase II Actionable In a Phase II trial, MK2226 demonstrated limited benefit in endometrial cancer patients regardless of PIK3CA status, with partial responses in 6% (2/37) of patients, 19% (7/37; 5 with serous histology) remaining progression-free for at least 6 mo, and a median progression-free survival (PFS) of 2.0 mo in the overall population, and partial responses in 11% (11/9), 33% (3/9) progression-free for 6 mo, and a median PFS of 1.7 mo in the group of patients with PIK3CA mutations (PMID: 31714586; NCT01307631). 31714586
PIK3CA mutant triple-receptor negative breast cancer sensitive Palbociclib + Pictilisib Preclinical Actionable In a preclinical study, Ibrance (palbociclib) and Pictilisib (GDC-0941) worked synergistically to inhibit the survival of triple-receptor negative breast cancer cell lines harboring PIK3CA mutations in culture (PMID: 27020857). 27020857
PIK3CA mutant breast cancer no benefit GSK2126458 Phase I Actionable In a Phase I trial, GSK2126458 was well-tolerated and resulted in some efficacy in patients with breast cancer harboring a PIK3CA mutation including stable disease in 22% (2/9), however, objective response rate was not associated with PIK3CA mutations when compared to those without PIK3CA mutations (PMID: 26603258). 26603258
PIK3CA mutant Advanced Solid Tumor sensitive A-443654 Preclinical Actionable In a preclinical study, cells expressing mutant PIK3CA demonstrated increased sensitivity to A-443654 compared to cells expressing wild-type PIK3CA (PMID: 19208828). 19208828
PIK3CA mutant colon cancer sensitive PWT33597 Preclinical Actionable In a preclinical study, PWT33597 decreased signaling of mTOR and PIK3 pathways in colon cancer cells with Pik3ca mutations (Cancer Res 2011;71(8 Suppl):Abstract nr 4485). detail...
PIK3CA mutant Advanced Solid Tumor sensitive M2698 Preclinical Actionable In a preclinical study, MSC2363318A demonstrated anti-proliferative activity against many solid tumor cell lines with PI3K pathway genomic alterations, and inhibited tumor growth in several human cancer xenograft models of breast, pancreatic, glioblastoma and ovarian cancers (Mol Cancer Ther 2013;12(11 Suppl):A162). detail...
PIK3CA mutant lung non-small cell carcinoma predicted - sensitive Sulindac Preclinical - Cell culture Actionable In a preclinical study, non-small cell lung cancer cell lines harboring either a PIK3CA mutation or PIK3CA amplification demonstrated increased sensitivity to Clinoril (sulindac) compared to cell lines with wild-type PIK3CA, resulting in decreased proliferation in culture (PMID: 30683736). 30683736
PIK3CA mutant lung squamous cell carcinoma no benefit Taselisib Phase I Actionable In a Phase I (SWOG S1400B) trial, Taselisib (GDC-0032) treatment did not meet primary endpoint in patients with lung squamous cell carcinoma harboring PIK3CA mutations, with only 1 responder in the primary analysis population (n=21) (PMID: 31158500; NCT02785913). 31158500
PIK3CA mutant endometrial cancer sensitive Alpelisib Case Reports/Case Series Actionable In a Phase I trial, Alpelisib (BYL719) treatment resulted in 1 complete response and 1 partial response in patients with endometrial cancer harboring PIK3CA mutations (PMID: 29401002; NCT01219699). 29401002
PIK3CA mutant colon cancer predicted - resistant Selumetinib Preclinical - Cell line xenograft Actionable In a preclinical study, Koselugo (selumetinib) treatment did not induce cell death, apoptosis, or inhibit colony formation in PIK3CA mutant colon cancer cells in culture, and did not inhibit tumor growth in a cell line xenograft model (PMID: 30944457). 30944457
PIK3CA mutant breast cancer sensitive Letrozole + Taselisib Phase Ib/II Actionable In a Phase Ib trial, Taselisib (GDC-0032) and Femara (letrozole) combination therapy resulted in an overall response rate of 38% in breast cancer patients with PIK3CA mutations, compared to 9% in patients with wild-type PIK3CA (Cancer Res May 1, 2015 75; PD5-2). detail...
PIK3CA mutant endometrioid ovary carcinoma sensitive Capivasertib Phase I Actionable In a Phase I clinical trial, AZD5363 demonstrated safety and efficacy in patients with advanced solid tumors, including prolonged stable disease in one patient with a PIK3CA-mutant endometrioid ovarian cancer (American Association for Cancer Research; 06 Apr 2013-10 Apr 2013; Abstract LB-66). detail...
PIK3CA mutant lung adenocarcinoma no benefit Capivasertib Case Reports/Case Series Actionable In a Phase II trial (NLMT), Capivasertib (AZD5363) treatment did not result in a conformed response (0/8) or durable clinical benefit (0/8) in patients with lung adenocarcinoma harboring mutations in PIK3CA, PTEN, or AKT, thus the cohort was closed due to futility (PMID: 32669708, NCT02664935). 32669708
PIK3CA mutant breast cancer no benefit MK2206 Phase II Actionable In a Phase II trial, MK2206 demonstrated limited clinical efficacy in patients with advanced breast cancer harboring mutations in PIK3CA (n=14) or AKT1 (n=4), resulted in an objective response rate of 5.6% (1/18, 1 partial response) and a 6-month progression-free survival rate of 5.6%, with no significant target inhibition in tumor biopsies (PMID: 31277699; NCT01277757). 31277699
PIK3CA mutant uterine cancer predicted - sensitive Copanlisib Case Reports/Case Series Actionable In a Phase II trial (NCI MATCH EAY131-Z1F), Aliqopa (copanlisib) treatment resulted in a partial response in a patient with uterine cancer harboring PIK3CA mutation (J Clin Oncol 38: 2020 (suppl; abstr 3506); NCT02465060). detail...
PIK3CA mutant breast cancer sensitive AT13148 Preclinical - Cell line xenograft Actionable In a preclinical study, a ERBB3 (HER3) positive breast cancer cell line xenograft model harboring a PIK3CA mutation was demonstrated decreased tumor growth when treated with AT13148 (PMID: 22781553). 22781553
PIK3CA mutant breast cancer predicted - sensitive MLN1117 Case Reports/Case Series Actionable In a Phase I trial, MLN1117 (INK1117) treatment resulted in partial response in 3 patients with breast cancer harboring PI3CA mutations (PMID: 28490463; NCT01449370). 28490463
PIK3CA mutant Her2-receptor negative breast cancer sensitive Alpelisib Phase I Actionable In a Phase I trial, Alpelisib (BYL719) treatment resulted in a disease control rate of 60.9% (14/23, 0 complete response (CR), 1 partial response (PR), 13 stable disease (SD)), and a clinical benefit rate (CR+PR+SD>24 weeks) of 17.4% (4/23) in patients with ER-positive, ERBB2 (HER2)-negative breast cancer harboring PIK3CA mutations (PMID: 29401002; NCT01219699). 29401002
PIK3CA mutant Advanced Solid Tumor sensitive Sapanisertib Preclinical Actionable In a preclinical study, human cancer cell lines harboring PIK3CA mutations were sensitive to Sapanisertib (MLN0128) as demonstrated by significant growth inhibition (PMID: 25261369). 25261369
PIK3CA mutant Her2-receptor negative breast cancer no benefit Capivasertib + Paclitaxel Phase II Actionable In a Phase II trial, the addition of AZD5363 to Taxol (paclitaxel) therapy did not improve progression-free survival compared to placebo (10.9 vs 10.8 months) in patients with PIK3CA-mutant, Esr1-positive, Erbb2 (Her2)-negative breast cancer (PMID: 30860570; NCT01625286). 30860570
PIK3CA mutant Her2-receptor negative breast cancer no benefit Everolimus Phase III Actionable In a retrospective analysis of a Phase III trial (BOLERO-2), the presence of PIK3CA mutations did not significantly affect the efficacy of Afinitor (everolimus) in patients with hormone receptor-positive, Erbb2 (Her2)-negative breast cancer, with a HR for progression-free survival of 0.37 in PIK3CA wild-type group and a HR of 0.51 (p=0.35) in patients with PIK3CA mutations (PMID: 26503204; NCT00863655). 26503204
PIK3CA mutant Advanced Solid Tumor sensitive VS-5584 Preclinical Actionable In preclinical studies, VS-5584 demonstrated efficacy in a variety of cancer cell lines, particularly those harboring PIK3CA mutations (PMID: 23270925). 23270925
PIK3CA mutant liposarcoma predicted - sensitive Copanlisib Case Reports/Case Series Actionable In a Phase II trial (NCI MATCH EAY131-Z1F), Aliqopa (copanlisib) treatment resulted in a partial response in a patient with liposarcoma harboring PIK3CA mutation (J Clin Oncol 38: 2020 (suppl; abstr 3506); NCT02465060). detail...
PIK3CA mutant Advanced Solid Tumor sensitive AZD8835 Preclinical Actionable In a preclinical study, AZD8835 inhibited growth of a variety of advanced solid tumor models with Pik3ca mutations in culture (PMID: 26839307). 26839307
PIK3CA mutant hematologic cancer sensitive CUDC-907 Preclinical - Cell line xenograft Actionable In a preclinical study, CUDC-907 inhibited PIK3CA, blocked downstream AKT pathway activation, and induced apoptosis and cell cycle arrest in both PIK3CA wild-type and PIK3CA mutant human cancer cell lines and xenograft models of multiple solid and hematologic cancers (PMID: 22693356). 22693356
PIK3CA mutant breast cancer sensitive OSI-027 Preclinical - Cell line xenograft Actionable In a preclinical study, OSI-027 induced tumor regression in breast cancer cell line xenograft models harboring PIK3CA mutations (PMID: 21673091). 21673091
PIK3CA mutant lung squamous cell carcinoma no benefit Capivasertib Case Reports/Case Series Actionable In a Phase II trial (NLMT), Capivasertib (AZD5363) treatment did not result in a conformed response (0/4) or durable clinical benefit (0/4) in patients with squamous cell lung cancer harboring PIK3CA mutations, thus the cohort was closed due to futility (PMID: 32669708, NCT02664935). 32669708
PIK3CA mutant ovarian cancer not predictive Perifosine Phase II Actionable In a Phase II trial , Perifosine (KRX-0401) treatment was well-tolerated, resulted in stable disease as best response in patients with recurrent ovarian cancer, no significant difference in disease control rate (12.5%, 2/16 vs 40%, 2/5, p=0.22), median progression-free survival (HR=0.57, p=0.32), or median overall survival (HR=1.37, p=0.58) was identified between PIK3CA wild-type and PIK3CA mutant patients (PMID: 28864978). 28864978
PIK3CA mutant Advanced Solid Tumor no benefit Alpelisib + Infigratinib Phase Ib/II Actionable In a Phase Ib trial, treatment with the combination of Piqray (alpelisib) and Infigratinib (BGJ398) resulted in partial response (PR) in 9.7% (6/62) and disease control (PR or stable disease) in 61.3% (34/62) of patients with advanced solid tumors harboring a PIK3CA mutation with or without an FGFR alteration, however, the efficacy was not deemed great enough to pursue further development (JCO Precision Oncology 2019 :3, 1-13). detail...
PIK3CA mutant triple-receptor negative breast cancer predicted - sensitive Ipatasertib + Paclitaxel Phase II Actionable In a Phase II trial, Ipatasertib (GDC-0068) in combination with Abraxane (paclitaxel) resulted in improved progression free survival (6.2 vs 4.9 months) compared to placebo in triple-receptor negative breast cancer patients harboring mutations in PIK3CA, AKT1, or PTEN (J Clin Oncol 35, 2017 (suppl; abstr 1009)). detail...
PIK3CA mutant stomach cancer sensitive BAY1082439 Preclinical Actionable In a preclinical study, BAY1082439 inhibited growth of gastric cancer cells harboring PIK3CA mutations in culture and xenograft models (AACR; 2015. Abstract nr 2674). detail...
PIK3CA mutant colon cancer predicted - resistant NVP-TNKS656 Preclinical - Cell line xenograft Actionable In a preclinical study, NVP-TNKS656 treatment alone did not significantly inhibit viability of PIK3CA mutant colon cancer cells in culture, and did not inhibit tumor growth in a cell line xenograft model (PMID: 30944457). 30944457
PIK3CA mutant Her2-receptor positive breast cancer sensitive CCT128930 Preclinical - Cell line xenograft Actionable In a preclinical study, CCT128930 induced growth arrest and inhibited tumor growth in a xenograft model of a ERBB2 (HER2)-positive human breast cancer cell line harboring a PIK3CA mutation (PMID: 21191045). 21191045
PIK3CA mutant colon cancer predicted - resistant Pimasertib Preclinical - Cell culture Actionable In a preclinical study, Pimasertib (MSC1936369B) treatment did not induce cell death, apoptosis, or inhibit colony formation in PIK3CA mutant colon cancer cells in culture (PMID: 30944457). 30944457
PIK3CA mutant head and neck cancer sensitive Alpelisib Phase I Actionable In a Phase I trial, Alpelisib (BYL719) treatment resulted in a disease control rate of 68.4% (13/19, 0 complete response (CR), 0 partial response (PR), 13 stable disease (SD)), and a clinical benefit rate (CR+PR+SD>24 weeks) of 10.5% (2/19) in patients with head and neck cancer harboring PIK3CA mutations (PMID: 29401002; NCT01219699). 29401002
PIK3CA mutant Her2-receptor positive breast cancer not predictive Ado-trastuzumab emtansine Phase III Actionable In a retrospective analysis of a Phase III trial (KATHERINE), adjuvant Kadcyla (ado-trastuzumab emtansine) treatment demonstrated similar invasive disease-free survival benefit over Herceptin (trastuzumab) in PIK3CA mutant (HR=0.54) and PIK3CA wild-type (HR=0.48) patients with Erbb2 (Her2)-positive breast cancer who had residual invasive disease after neoadjuvant therapy (J Clin Oncol 38, no. 15_suppl (May 20, 2020) 502-502; NCT01772472). detail...
PIK3CA mutant cervical cancer not predictive Perifosine Phase II Actionable In a Phase II trial , Perifosine (KRX-0401) treatment was well-tolerated, resulted in stable disease as best response in patients with recurrent cervical cancer, no significant difference in disease control rate (11.1%, 2/18 vs 25%, 2/8, p=0.56), median progression-free survival (HR=1.06, p=0.81), or median overall survival (HR=1.66, p=0.26) was identified between PIK3CA wild-type and PIK3CA mutant patients (PMID: 28864978). 28864978
PIK3CA mutant cervical cancer predicted - sensitive Alpelisib Case Reports/Case Series Actionable In a Phase I trial, Alpelisib (BYL719) treatment resulted in partial response in 3 patients with cervical cancer harboring PIK3CA mutations (PMID: 29401002; NCT01219699). 29401002
PIK3CA mutant Advanced Solid Tumor predicted - sensitive Copanlisib Phase II Actionable In a Phase II trial (NCI MATCH EAY131-Z1F), Aliqopa (copanlisib) treatment resulted in an objective response rate of 11% (3/28, 3 partial response) and a clinical benefit rate of 32% (9/28) in patients with advanced solid tumors harboring PIK3CA mutations (J Clin Oncol 38: 2020 (suppl; abstr 3506); NCT02465060). detail...
PIK3CA mutant breast cancer sensitive Pictilisib Preclinical Actionable In a preclinical study, GDC-0941 inhibited growth and induced apoptosis in breast cancer cells expressing PIK3CA mutations (PMID: 24601221). 24601221
PIK3CA mutant breast cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, breast cancer cells with PIK3CA mutations, both with and without ERBB2 (HER2) amplification, demonstrated sensitivity to CH5132799 in culture (PMID: 21558396). 21558396
PIK3CA mutant ovarian cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of ovarian cancer cells with PIK3CA mutations in culture (PMID: 21558396). 21558396
PIK3CA mutant endometrial cancer not predictive Perifosine Phase II Actionable In a Phase II trial , Perifosine (KRX-0401) treatment was well-tolerated, resulted in stable disease as best response in patients with recurrent endometrial cancer, no significant difference in disease control rate (47.1%, 8/17 vs 14.3%, 1/7, p=0.19), median progression-free survival (HR=1.71, p=0.30), or median overall survival (HR=0.92, p=0.88) was identified between PIK3CA wild-type and PIK3CA mutant patients (PMID: 28864978). 28864978
PIK3CA mutant squamous cell carcinoma sensitive Carboxyamidotriazole Orotate Phase I Actionable In a Phase I clinical trial, carboxyamidotriazole orotate treatment demonstrated some efficacy in patients with various solid tumors including squamous cell carcinomas (tonsil) with PI3KCA and NRAS mutations (J Clin Oncol 31, 2013 (suppl; abstr 2518)). detail...
PIK3CA mutant colon cancer sensitive Dactolisib Preclinical Actionable In a preclinical study, BEZ235 demonstrated efficacy in promoting apoptosis of colon cancer cells harboring a PIK3CA mutation in culture (PMID: 22543857). 22543857
PIK3CA mutant clear cell adenocarcinoma predicted - sensitive Copanlisib Case Reports/Case Series Actionable In a Phase II trial (NCI MATCH EAY131-Z1F), Aliqopa (copanlisib) treatment resulted in a partial response in a patient with clear cell carcinoma of anterior abdominal wall harboring PIK3CA mutation (J Clin Oncol 38: 2020 (suppl; abstr 3506); NCT02465060). detail...
PIK3CA mutant cervical cancer decreased response Cetuximab Phase II Actionable In a Phase II clinical trial, Erbitux (cetuximab) treatment, in addition to radiochemotherapy, did not result in any complete responses (0/8) and demonstrated a worse disease free survival when compared to radiochemotherapy alone in cervical cancer patients harboring PIK3CA mutations (PMID: 25724520). 25724520
PIK3CA mutant colon cancer predicted - resistant Refametinib Preclinical - Cell culture Actionable In a preclinical study, Refametinib (BAY86-9766) treatment did not induce cell death, apoptosis, or inhibit colony formation in PIK3CA mutant colon cancer cells in culture (PMID: 30944457). 30944457
PIK3CA mutant breast cancer sensitive Sapanisertib Preclinical Actionable In a preclinical study, Sapanisertib (MLN0128) demonstrated efficacy in PIK3CA mutant breast cancer xenograft models (PMID: 23085766). 23085766
PIK3CA mutant colorectal cancer predicted - sensitive MS417 + Pictilisib Preclinical - Cell culture Actionable In a preclinical study, Pictilisib (GDC-0941) and MS417 in combination resulted in improved growth inhibition and increased cell death compared to either agent alone in colorectal cancer cell lines harboring PIK3CA mutations in culture (PMID: 26058079). 26058079
PIK3CA mutant Advanced Solid Tumor sensitive Carboxyamidotriazole Orotate Phase I Actionable In a Phase I clinical trial, carboxyamidotriazole orotate treatment demonstrated some efficacy in patients with various solid tumors, including patients harboring PIK3CA mutations (J Clin Oncol 31, 2013 (suppl; abstr 2518)). detail...
PIK3CA mutant lung non-small cell carcinoma sensitive PWT33597 Preclinical Actionable In a preclinical study, PWT33597 decreased signaling of mTOR and PIK3 pathways in non-small cell lung cancer cells with Pik3ca mutations (Cancer Res 2011;71(8 Suppl):Abstract nr 4485). detail...
PIK3CA mutant breast cancer sensitive Alpelisib + GSK2334470 Preclinical - Cell line xenograft Actionable In a preclinical study, GSK2334470 resensitized Alpelisib (BYL719)-resistant breast cancer cell lines harboring PIK3CA mutations to Alpelisib (BYL719) in culture and in cell line xenograft models (PMID: 27451907). 27451907
PIK3CA mutant breast cancer predicted - sensitive CYH33 Preclinical - Cell culture Actionable In a preclinical study, breast cancer cell lines harboring PIK3CA mutations demonstrated increased sensitivity to CYH33 compared to cell lines with wild-type PIK3CA in culture (p<0.01) (PMID: 30003928). 30003928
PIK3CA mutant colorectal cancer sensitive Alpelisib Phase I Actionable In a Phase I trial, Alpelisib (BYL719) treatment resulted in a disease control rate of 34.3% (12/35, 0 complete response (CR), 2 partial response (PR), 10 stable disease (SD)), and a clinical benefit rate (CR+PR+SD>24 weeks) of 8.6% (3/35) in patients with colorectal cancer harboring PIK3CA mutations (PMID: 29401002; NCT01219699). 29401002
PIK3CA mutant triple-receptor negative breast cancer sensitive Pictilisib Preclinical - Cell culture Actionable In a preclinical study, triple-receptor negative breast cancer cell lines harboring PIK3CA mutations demonstrated increased sensitivity to Pictilisib (GDC-0941) in culture (PMID: 27196766). 27196766
PIK3CA mutant stomach cancer sensitive Dactolisib Preclinical Actionable In a preclinical study, BEZ235 demonstrated efficacy in promoting apoptosis of gastric cancer cells harboring a PIK3CA mutation in culture (PMID: 22543857). 22543857
PIK3CA mutant breast cancer predicted - sensitive Capivasertib Preclinical Actionable In a preclinical study, AZD5363 inhibited growth in breast cancer cell lines and xenograft models expressing PIK3CA mutations (PMID: 22294718). 22294718
PIK3CA mutant breast cancer predicted - sensitive Capivasertib Phase I Actionable In a Phase I trial, treatment with AZD5363 was well-tolerated and resulted in tumor shrinkage in 46% (12/26) patients with PIK3CA-mutant breast cancer, with confirmed RECIST responses in 4% (1/28) of patients (PMID: 29066505; NCT01226316). 29066505
PIK3CA mutant Advanced Solid Tumor sensitive PX-866 Phase I Actionable In a Phase I trial, PX-866 demonstrated efficacy and was well tolerated in patients with advanced solid tumor with both PIK3CA wild-type and mutant status (PMID: 22693357). 22693357
PIK3CA mutant Advanced Solid Tumor sensitive Taselisib Phase I Actionable In a Phase I trial, Taselisib (GDC-0032) demonstrated activity in patients with PIK3CA-mutant advanced solid tumors, in the absence of alterations in the MAPK or PTEN pathways (Cancer Res October 1, 2014 74:915). detail...
PIK3CA mutant ovarian cancer sensitive Buparlisib + Olaparib Preclinical - Cell line xenograft Actionable In a preclinical study, the combination of Buparlisib (BKM120) and Lynparza (olaparib) worked synergistically to induce apoptosis and inhibit growth of ovarian cancer cell lines harboring PIK3CA mutations in culture, and induced apoptosis and decreased proliferation of PIK3CA-mutant ovarian cancer cell line xenograft models (PMID: 26909613). 26909613
PIK3CA mutant Advanced Solid Tumor sensitive Onatasertib Phase I Actionable In a Phase I trial, CC-223 demonstrated safety and preliminary efficacy in patients with solid tumors, including stable disease for greater than 110 days in 2 patients with PIK3CA mutation or PTEN deletion (PMID: 26177599). 26177599 detail...
PIK3CA mutant estrogen-receptor positive breast cancer predicted - sensitive Letrozole Phase III Actionable In a Phase III trial, estrogen-receptor positive breast cancer patients harboring a PIK3CA mutation demonstrated a greater benefit when treated with Femara (letrozole) compared to Nolvadex (tamoxifen) (PMID: 29902286; NCT00004205). 29902286
PIK3CA mutant stomach cancer predicted - sensitive MLN1117 Case Reports/Case Series Actionable In a Phase I trial, MLN1117 (INK1117) treatment resulted in a partial response in one patient with gastric cancer harboring a PIK3CA mutation (PMID: 28490463; NCT01449370). 28490463
PIK3CA mutant Advanced Solid Tumor sensitive AT-7867 Preclinical Actionable In a preclinical study, AT-7867 inhibited proliferation in several human tumor cell lines harboring PIK3CA mutations in culture (PMID: 20423992). 20423992
PIK3CA mutant endometrial cancer sensitive Pictilisib Preclinical Actionable In a preclinical study, endometrioid endometrial cancer cell lines harboring PIK3CA mutations demonstrated increased sensitivity to GDC-0941 (Pictilisib) induced growth inhibition comparing to PIK3CA wild-type cells in culture (PMID: 23674493). 23674493
PIK3CA mutant head and neck squamous cell carcinoma sensitive Radiotherapy + Taselisib Preclinical - Pdx & cell culture Actionable In a preclinical study, Taselisib (GDC-0032) enhanced the effects of radiation induced apoptosis in HNSCC cell lines, cell line xenograft models, and a patient derived xenograft (PDX) model, all with PIK3CA mutations (PMID: 26589432). 26589432
PIK3CA mutant Advanced Solid Tumor sensitive MLN1117 Phase I Actionable In a Phase I trial, MLN1117 demonstrated safety and preliminary efficacy in a variety of patients with advanced solid tumors carrying PIK3CA mutations (Journal of Clinical Oncology, 2015 ASCO Annual Meeting Vol 33, No 15_suppl., 2015: 2501). detail...
PIK3CA mutant Advanced Solid Tumor sensitive MLN1117 Preclinical Actionable In a preclinical study, MLN1117 inhibited proliferation of tumor cells harboring oncogenic PIK3CA mutations in culture and inhibited tumor growth in PIK3CA mutant xenograft models (Cancer Ther 2011;10(11 Suppl):Abstract nr A171). detail...
PIK3CA mutant Advanced Solid Tumor sensitive Alpelisib Preclinical - Cell line xenograft Actionable In a preclinical study, PIK3CA mutations were associated with sensitivity to Alpelisib (BYL719) in human tumor cell lines in culture and in xenograft models (PMID: 24608574). 24608574
PIK3CA mutant Advanced Solid Tumor sensitive Alpelisib Phase I Actionable In a Phase I trial, Alpelisib (BYL719) demonstrated safety and efficacy in patients with advanced solid tumor harboring PIK3CA mutations, resulted in a disease control rate of 58.2% (78/134, 1 complete response (CR), 7 partial response (PR), 70 stable disease (SD)), and a clinical benefit rate (CR+PR+SD>24 weeks) of 15.7% (21/134) (PMID: 29401002; NCT01219699). 29401002
PIK3CA mutant endometrial cancer no benefit Temsirolimus Phase II Actionable In a retrospective study of a Phase II trial, mutation status of PIK3CA was not associated with progression-free survival or response rate in advanced endometrial cancer patients treated with Torisel (temsirolimus) (PMID: 27016228). 27016228
PIK3CA mutant hepatocellular carcinoma decreased response Sorafenib Clinical Study - Cohort Actionable In a clinical case study, Nexavar (sorafenib) treatment of patients with hepatocellular carcinoma harboring Mtor pathway mutations in PIK3CA, PTEN, TSC2, or TSC1 (n=12), resulted in a lower disease control rate (8.3% vs. 40.2%), shorter progression-free survival (1.9 months vs. 5.3 months) and shorter overall survival (10.4 months vs. 17.9 months) compared to patients without mutations in this pathway (n=67) (PMID: 30373752; NCT01775072). 30373752
PIK3CA mutant breast cancer sensitive VS-5584 Preclinical Actionable In a preclinical study, PIK3CA mutant breast cancer cells showed increased sensitivity to VS-5584 compared to PIK3CA wild-type cells in culture (PMID: 23270925). 23270925
PIK3CA mutant gastric adenocarcinoma sensitive Fluorouracil + PI-103 Preclinical Actionable In a preclinical study, PI-103 enhanced sensitivity to 5-FU in gastric cancer cells with mutant PIK3CA (PMID: 22336586). 22336586
PIK3CA mutant colon cancer predicted - sensitive NVP-TNKS656 + Trametinib Preclinical - Cell line xenograft Actionable In a preclinical study, Mekinist (trametinib) treatment in combination with NVP-TNKS656 enhanced cell death in PIK3CA mutant colon cancer cells in culture, and induced apoptosis and inhibited tumor growth in a cell line xenograft model (PMID: 30944457). 30944457
PIK3CA mutant breast cancer sensitive CUDC-907 Preclinical Actionable In a preclinical study, CUDC-907 inhibited growth of human breast cancer cell lines harboring PIK3CA mutations in culture (PMID: 22693356). 22693356
PIK3CA mutant estrogen-receptor positive breast cancer no benefit Fulvestrant + Pictilisib Phase II Actionable In a Phase II trial, Falsodex (fulvestrant) and Pictilisib (GDC-0941) combination treatment resulted in similar progression free survival in ER positive breast cancer patients harboring PIK3CA mutations and those who were PIK3CA wild-type (PMID: 27174596). 27174596
PIK3CA mutant lung non-small cell carcinoma sensitive PF-04691502 Preclinical - Cell line xenograft Actionable In a preclinical study, PF-04691502 inhibited tumor growth in non-small cell lung cancer cell line xenograft models harboring PIK3CA mutations (PMID: 21750219). 21750219
PIK3CA mutant Advanced Solid Tumor sensitive BAY1082439 Preclinical Actionable In a preclinical study, BAY1082439 induced regression in xenograft models of advanced solid tumors with PIK3CA mutations (Cancer Res April 15, 2012 72; 2799). detail...
PIK3CA mutant breast adenocarcinoma sensitive Acalisib Preclinical - Cell line xenograft Actionable In a preclinical study, Acalisib (GS-9820) resulted in tumor growth inhibition in xenograft models of breast adenocarcinoma harboring a PIK3CA mutation (Mol Cancer Ther 2009;8(12 Suppl):B136). detail...
PIK3CA mutant endometrial cancer sensitive GDC-0980 Phase II Actionable In a Phase II trial, Apitolisib (GDC-0980) was poorly tolerated, but demonstrated efficacy in endometrial cancer patients harboring mutations in PIK3CA, PTEN, or AKT1 (J Clin Oncol 32:5s, 2014 (suppl; abstr 5513)). detail...
PIK3CA mutant colon cancer predicted - sensitive NVP-TNKS656 + Selumetinib Preclinical - Cell culture Actionable In a preclinical study, Koselugo (selumetinib) treatment in combination with NVP-TNKS656 enhanced cell death in PIK3CA mutant colon cancer cells in culture (PMID: 30944457). 30944457
PIK3CA mutant breast cancer predicted - sensitive GDC-0077 Preclinical - Pdx & cell culture Actionable In a preclinical study, GDC-0077 inhibited proliferation and induced apoptosis in PIK3CA-mutant breast cancer cell lines in culture, and induced apoptosis and tumor regression in PIK3CA-mutant breast cancer cell line and patient-derived xenograft models (AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 156). detail...
PIK3CA mutant Advanced Solid Tumor sensitive GDC-0980 Phase I Actionable In a Phase I trial, Apitolisib (GDC-0980) treatment resulted in partial response in 21% (3/14) and stable disease in 57% (8/14) of patients with advanced solid tumors harboring PIK3CA mutations (PMID: 26787751). 26787751
PIK3CA mutant estrogen-receptor positive breast cancer no benefit Fulvestrant Phase II Actionable In a Phase II trial, Falsodex (fulvestrant) treatment resulted in similar progression free survival in ER positive breast cancer patients harboring PIK3CA mutations and those who were PIK3CA wild-type (PMID: 27174596). 27174596
PIK3CA mutant ovarian cancer sensitive OSI-027 Preclinical - Cell line xenograft Actionable In a preclinical study, OSI-027 inhibited tumor growth in ovarian cancer cell line xenograft models harboring PIK3CA mutations (PMID: 21673091). 21673091
PIK3CA mutant female reproductive organ cancer predicted - sensitive Capivasertib Phase I Actionable In a Phase I trial, treatment with AZD5363 was well-tolerated and resulted in tumor shrinkage in 56% (14/25) patients with PIK3CA-mutant gynecological cancers, however, the response rate was modest with confirmed RECIST responses in 8% (2/26) of patients (PMID: 29066505; NCT01226316). 29066505
PIK3CA mutant head and neck squamous cell carcinoma predicted - sensitive Carboplatin + Paclitaxel + Temsirolimus Phase II Actionable In a Phase II trial, two patients with head and neck squamous cell carcinoma harboring a PIK3CA mutation who had stable disease demonstrated some tumor regression when treated with the combination of Torisel (temsirolimus), Paraplatin (carboplatin), and Taxol (paclitaxel) (PMID: 28961834). 28961834
PIK3CA mutant colon cancer predicted - resistant Trametinib Preclinical - Cell culture Actionable In a preclinical study, Mekinist (trametinib) treatment did not induce cell death, apoptosis, or inhibit colony formation in PIK3CA mutant colon cancer cells in culture, and did not inhibit tumor growth in a cell line xenograft model (PMID: 30944457). 30944457
PIK3CA mutant endometrial cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of endometrial cancer cells with PIK3CA mutations in culture (PMID: 21558396). 21558396
PIK3CA mutant Advanced Solid Tumor predicted - sensitive Uprosertib Phase I Actionable In a Phase I clinical trial, GSK2141795 demonstrated safety and preliminary efficacy in patients with advanced solid tumors, with 4 patients with PIK3CA mutations and/or PTEN loss achieving stable disease for greater than 6 months (J Clin Oncol 29: 2011 (suppl; abstr 3003)). detail...
PIK3CA mutant ovarian cancer sensitive Temsirolimus Case Reports/Case Series Actionable In a clinical study, an ovarian cancer patient harboring a PIK3CA E542 mutation demonstrated stable disease when treated with Torisel (temsirolimus) (PMID: 21216929). 21216929
PIK3CA mutant ovarian cancer sensitive Temsirolimus Phase I Actionable In a Phase I clinical trial, Torisel (temsirolimus) demonstrated limited efficacy in ovarian cancer patients with PIK3CA mutations (PMID: 22271473). 22271473
PIK3CA mutant Advanced Solid Tumor sensitive Bevacizumab + Pegylated liposomal-doxorubicin + Temsirolimus Clinical Study Actionable In a clinical study, the combination of Torisel (temisirolimus) plus Avastin (bevacizumab) and Doxil (pegylated liposomal-doxirubicin) resulted in stable disease in patients with advanced solid tumors harboring PIK3CA mutations (PMID: 21216929). 21216929
PIK3CA mutant Advanced Solid Tumor sensitive Bevacizumab + Pegylated liposomal-doxorubicin + Temsirolimus Clinical Study Actionable In a clinical study, the combination of Torisel (temsirolimus) plus Avastin (bevacizumab) and Doxil (pegylated liposomal-doxorubicin) resulted in a partial response in patients with advanced solid tumors harboring PIK3CA mutations (PMID: 21216929). 21216929
PIK3CA mutant prostate cancer sensitive CH5132799 Preclinical Actionable In a preclinical study, CH5132799 inhibited proliferation of prostate cancer cells with PIK3CA mutations in culture (PMID: 21558396). 21558396
PIK3CA mutant breast cancer sensitive AZD8835 Preclinical Actionable In a preclinical study, AZD8835 inhibited tumor growth in breast cancer xenograft models harboring PIK3CA mutations (AACR; 2015. Abstract nr 2665). detail...
PIK3CA mutant breast cancer no benefit Temsirolimus Phase II Actionable In a Phase II trial, Torisel (temsirolimus) treatment resulted in stable disease in 9.7% (3/31) of breast cancer patients positive for ER, PR or ERBB2 (HER2), however there was no association between PIK3CA mutational status and clinical benefits (PMID: 22245973). 22245973
PIK3CA mutant Advanced Solid Tumor sensitive CUDC-907 Preclinical - Cell line xenograft Actionable In a preclinical study, CUDC-907 inhibited PIK3CA, blocked downstream AKT pathway activation, and induced apoptosis and cell cycle arrest in both PIK3CA wild-type and PIK3CA mutant human cancer cell lines and xenograft models of multiple tumor types (PMID: 22693356). 22693356
PIK3CA mutant estrogen-receptor positive breast cancer sensitive AZD8835 Preclinical Actionable In a preclinical study, AZD8835 inhibited proliferation of estrogen receptor (ER)-positive breast cancer cells harboring PIK3CA mutations in culture and suppressed tumor growth in xenograft models (PMID: 26839307). 26839307
PIK3CA mutant endometrial carcinoma no benefit Copanlisib Phase II Actionable In a Phase II (NRG-GY008) trial, Aliqopa (copanlisib) was well tolerated but demonstrated limited efficacy, resulted in stable disease as best response in 54.5% (6/11) of patients with endometrial carcinoma harboring PIK3CA mutations, with a median progression-free survival of 2.8 months and a median overall survival of 15.2 months (PMID: 31934607). 31934607
PIK3CA mutant Advanced Solid Tumor sensitive XL147 Preclinical Actionable In a preclinical study, tumor cell lines with PIK3CA mutations demonstrated sensitivity to XL147 in culture (PMID: 25637314). 25637314
PIK3CA mutant Advanced Solid Tumor sensitive XL147 Phase I Actionable In a Phase I clinical trial, XL147 (SAR24508) was shown to be safe and potentially efficacious, with clinical activity seen irrespective of tumor PI3K pathway molecular alterations (PMID: 24166903). 24166903
PIK3CA H1047X endometrial adenocarcinoma no benefit Copanlisib Case Reports/Case Series Actionable In a Phase II (NRG-GY008) trial, Aliqopa (copanlisib) was well tolerated but demonstrated limited efficacy, resulted in progressive disease in a patient with endometrioid adenocarcinoma harboring a PIK3CA H1047 mutation (PMID: 31934607). 31934607
PIK3CA H1047X endometrial adenocarcinoma predicted - sensitive Temsirolimus Case Reports/Case Series Actionable In a clinical study, a patient with endometrial adenocarcinoma harboring a PIK3CA H1047 mutation demonstrated a partial response when treated with Torisel (temsirolimus) (PMID: 21216929). 21216929
PIK3CA H1047X lung non-small cell carcinoma sensitive Taselisib Phase I Actionable In a Phase I trial, a non-small cell lung carcinoma patient harboring a mutation at PIK3CA H1047 demonstrated a confirmed partial response when treated with Taselisib (GDC-0032) (PMID: 28331003). 28331003
PIK3CA H1047X endometrial mixed adenocarcinoma no benefit Copanlisib Case Reports/Case Series Actionable In a Phase II (NRG-GY008) trial, Aliqopa (copanlisib) was well tolerated but demonstrated limited efficacy, resulted in progressive disease in a patient with endometrial mixed adenocarcinoma harboring a PIK3CA H1047 mutation (PMID: 31934607). 31934607
PIK3CA H1047X colorectal cancer predicted - resistant Bevacizumab + Temsirolimus Case Reports/Case Series Actionable In a clinical study, a colorectal cancer patient harboring a mutation at PIK3CA H1047 demonstrated progressive disease when treated with Torisel (temsirolimus) and Avastin (bevacizumab) (PMID: 21216929). 21216929
PIK3CA H1047X small intestine adenocarcinoma predicted - resistant Bortezomib + Temsirolimus + Topotecan Case Reports/Case Series Actionable In a clinical study, the combination of Torisel (temsirolimus) plus Velcade (bortezomib) and Hycamtin (topotecan) resulted in progressive disease in a patient with small intestine adenocarcinoma harboring a PIK3CA H1047 mutation (PMID: 21216929). 21216929
PIK3CA exon21 Her2-receptor negative breast cancer no benefit Everolimus Phase III Actionable In a retrospective analysis of a Phase III trial (BOLERO-2), Afinitor (everolimus) demonstrated greater benefit on progression-free survival in patients with hormone receptor-positive, Erbb2 (Her2)-negative breast cancer harboring PIK3CA exon 10 (reported as exon 9) mutations (HR=0.26) compared to patients harboring PIK3CA exon 21 (reported as exon 20) mutations (HR=0.56) (PMID: 26503204; NCT00863655). 26503204