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Profile Name | PIK3CA E453K |
Gene Variant Detail | |
Relevant Treatment Approaches | Akt Inhibitor (Pan) Akt1 Inhibitor Akt2 Inhibitor mTOR Inhibitor mTORC1 Inhibitor mTORC2 Inhibitor PI3K Inhibitor (Pan) PIK3CA inhibitor |
Molecular Profile | Indication/Tumor Type | Response Type | Relevant Treatment Approaches | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|---|
PIK3CA E453K | breast cancer | resistant | PI3K Inhibitor (Pan) | Buparlisib | Preclinical - Cell culture | Actionable | In a preclinical study, breast cancer cells expressing PIK3CA E453K demonstrated resistance to treatment with Buparlisib (BKM120) in culture (PMID: 29636477). | 29636477 |
PIK3CA E453K | lung squamous cell carcinoma | no benefit | PIK3CA inhibitor | Taselisib | Case Reports/Case Series | Actionable | In a Phase I (SWOG S1400B) trial, Taselisib (GDC-0032) treatment did not meet its primary endpoint for response rate in patients with lung squamous cell carcinoma harboring PIK3CA mutations, resulting in no response in a patient harboring PIK3CA E453K (PMID: 31158500; NCT02785913). | 31158500 |