Molecular Profile Detail

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Profile Name NRAS Q61K PIK3CA E545K
Gene Variant Detail

NRAS Q61K (loss of function - predicted)

PIK3CA E545K (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
NRAS Q61K PIK3CA E545K melanoma predicted - resistant Binimetinib + Ribociclib Preclinical - Cell line xenograft Actionable In a preclinical study, a melanoma cell line harboring NRAS Q61K and expressing PIK3CA E545K was resistant to combination treatment with Mektovi (binimetinib) and Kisqali (ribociclib) in culture and in a cell line xenograft model, demonstrating lack of tumor regression and continued tumor growth (PMID: 29496665). 29496665
NRAS Q61K PIK3CA E545K melanoma predicted - sensitive Ribociclib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring NRAS Q61K and expressing PIK3CA E545K was resistant to treatment with Kisqali (ribociclib) in culture (PMID: 29496665). 29496665
NRAS Q61K PIK3CA E545K melanoma predicted - resistant Binimetinib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line harboring NRAS Q61K and expressing PIK3CA E545K was resistant to treatment with Mektovi (binimetinib) in culture (PMID: 29496665). 29496665
NRAS Q61K PIK3CA E545K melanoma predicted - sensitive Binimetinib + PF-4708671 + Ribociclib Preclinical - Cell line xenograft Actionable In a preclinical study, the addition of PF-4708671 resensitized a melanoma cell line harboring NRAS Q61K and expressing PIK3CA E545K to combination treatment with Mektovi (binimetinib) and Kisqali (ribociclib) in culture, resulting in inhibition of cell growth, and resulted in tumor regression and complete responses in cell line xenograft models (PMID: 29496665). 29496665
NRAS Q61K PIK3CA E545K melanoma predicted - sensitive Binimetinib + Ribociclib + Sirolimus Preclinical - Cell culture Actionable In a preclinical study, the addition of Sirolimus (rapamycin) resensitized a melanoma cell line harboring NRAS Q61K and expressing PIK3CA E545K to combination treatment with Mektovi (binimetinib) and Kisqali (ribociclib) in culture, resulting in inhibition of cell growth (PMID: 29496665). 29496665