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Profile Name | PIK3CA E542K PTEN loss |
Gene Variant Detail | |
Relevant Treatment Approaches |
Molecular Profile | Indication/Tumor Type | Response Type | Relevant Treatment Approaches | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|---|
PIK3CA E542K PTEN loss | 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 E542K and PTEN loss to WEHI-539 in culture (PMID: 27974663). | 27974663 | |
PIK3CA E542K PTEN loss | stomach cancer | unknown | Sirolimus | Phase 0 | Actionable | In a pilot clinical trial, Rapamune (sirolimus) demonstrated modest clinical activity in patients with PIK3CA-mutant gastric cancer (n=3) or hilar cholangiocarcinoma (n=1), including a gastric cancer patient harboring PIK3CA E542K and PTEN loss, with a 0% response rate, median progression-free survival of 1.9 months, and median overall survival of 3.6 months (PMID: 28685070). | 28685070 | |
PIK3CA E542K PTEN loss | lung squamous cell carcinoma | sensitive | Alpelisib | Preclinical - Pdx | Actionable | In a preclinical study, Alpelisib (BYL719) treatment resulted in response in a lung squamous cell carcinoma patient-derived xenograft (PDX) model harboring PIK3CA E542K and PTEN loss (PMID: 30093452). | 30093452 | |
PIK3CA E542K PTEN loss | breast cancer | predicted - sensitive | CYH33 | Preclinical - Cell culture | Actionable | In a preclinical study, CYH33 inhibited proliferation of a breast cancer cell line harboring PIK3CA E542K and PTEN loss in culture (PMID: 30003928). | 30003928 | |
PIK3CA E542K PTEN loss | breast cancer | sensitive | Taselisib | Preclinical - Cell culture | Actionable | In a preclinical study, a breast cancer cell line harboring PIK3CA E542K was sensitive to treatment with Taselisib (GDC-0032) in culture, demonstrating decreased cell viability (PMID: 31534012). | 31534012 | |
PIK3CA E542K PTEN loss | lung squamous cell carcinoma | sensitive | Buparlisib | Preclinical - Pdx | Actionable | In a preclinical study, Buparlisib (BKM120) treatment resulted in inhibition of AKT and S6 phosphorylation and durable response in a lung squamous cell carcinoma patient-derived xenograft (PDX) model harboring PIK3CA E542K and PTEN loss (PMID: 30093452). | 30093452 |