Molecular Profile Detail


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Profile Name ERBB2 G778_S779insCPG
Gene Variant Detail

ERBB2 G778_S779insCPG (gain of function - predicted)

Relevant Treatment Approaches HER inhibitor (Pan) HER2 Inhibitor


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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
ERBB2 G778_S779insCPG lung adenocarcinoma no benefit Ado-trastuzumab emtansine Case Reports/Case Series Actionable In a Phase II trial, treatment with Kadcyla (trastuzumab emtansine) resulted in best overall responses of partial response in 44% (8/18) and stable disease in 39% (7/18), and median progression-free survival of 5 months in patients with lung adenocarcinoma harboring ERBB2 (HER2) activating mutations, but one patient specifically harboring a G778_S779insCPG mutation did not have a partial response (PMID: 29989854; NCT02675829). 29989854
ERBB2 G778_S779insCPG Advanced Solid Tumor sensitive HER inhibitor (Pan) Dacomitinib Preclinical - Cell culture Actionable In a preclinical study, Vizimpro (dacomitinib) inhibited growth of transformed cells expressing ERBB2 (HER2) G778_S779insCPG in culture (PMID: 28363995). 28363995
Clinical Trial Phase Therapies Title Recruitment Status
NCT02673398 Phase II Neratinib Neratinib in Treating Older Patients With Stage IV HER2-Positive Breast Cancer Active, not recruiting