Molecular Profile Detail

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Profile Name ERBB2 pos PIK3CA act mut
Gene Variant Detail

ERBB2 positive (unknown)

PIK3CA act mut (gain of function)

Relevant Treatment Approaches

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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
ERBB2 pos PIK3CA act mut uterine cancer sensitive Taselisib Preclinical Actionable In a preclinical study, Taselisib (GDC-0032) inhibited growth of HER2 positive uterine cancer cell lines with PIK3CA mutations (PMID: 25172762). 25172762
ERBB2 pos PIK3CA act mut Her2-receptor positive breast cancer decreased response Trastuzumab Clinical Study - Cohort Actionable In a clinical study, ERBB2 (HER2)-positive breast cancer patients with PI3K pathway activation resulting from low PTEN expression and/or PIK3CA activating mutations demonstrated decreased progression-free survival following treatment with Herceptin (trastuzumab) compared to patients without PI3K pathway activation (PMID: 17936563). 17936563
ERBB2 pos PIK3CA act mut Her2-receptor positive breast cancer decreased response Trastuzumab Clinical Study - Cohort Actionable In a retrospective analysis, ERBB2 (HER2)-positive breast cancer patients with PI3K pathway activation due to PTEN loss and/or PIK3CA activating mutation demonstrated a decreased median progression-free survival of 4.5 months, compared to 9.0 months for patients without PI3K pathway activation following treatment with a Herceptin (trastuzumab) containing regimen (PMID: 21676217). 21676217
ERBB2 pos PIK3CA act mut Her2-receptor positive breast cancer predicted - sensitive Buparlisib + Trastuzumab Phase I Actionable In a Phase I trial, the combination of Buparlisib (BKM120) and Herceptin (trastuzumab) was well tolerated and resulted in some preliminary efficacy in patients with ERBB2 (HER2)-positive breast cancer harboring PIK3CA activating mutations and/or PTEN mutations that had progressed on trastuzumab-based therapy (PMID: 24470511). 24470511
ERBB2 pos PIK3CA act mut Her2-receptor positive breast cancer sensitive Palbociclib + Pictilisib Preclinical Actionable In a preclinical study, Ibrance (palbociclib) and Pictilisib (GDC-0941) worked synergistically to inhibit survival of ERBB2 (HER2)-positive breast cancer cell lines harboring PIK3CA mutations in culture (PMID: 27020857). 27020857
Clinical Trial Phase Therapies Title Recruitment Status