Molecular Profile Detail

Profile Name BRAF L597S
Gene Variant Detail

BRAF L597S (gain of function)

Relevant Treatment Approaches MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor LY3009120

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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
BRAF L597S melanoma sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor Binimetinib Preclinical - Cell culture Actionable In a preclinical study, Mektovi (binimetinib) inhibited growth of melanoma cell lines harboring BRAF L597S in culture (PMID: 29903896). 29903896
BRAF L597S melanoma sensitive LY3009120 LY3009120 Preclinical - Cell culture Actionable In a preclinical study, LY3009120 inhibited growth of melanoma cells harboring BRAF L597S in culture (PMID: 29903896). 29903896
BRAF L597S melanoma sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor Encorafenib + Trametinib Preclinical - Cell culture Actionable In a preclinical study, the addition of Braftovi (encorafenib) to treatment with Mekinist (trametinib) resulted in increased growth inhibition in melanoma cell lines harboring BRAF L597S in culture (PMID: 29903896). 29903896
BRAF L597S Advanced Solid Tumor sensitive Vemurafenib Preclinical Actionable In a preclinical study, treatment of cells expressing BRAF L597S with the BRAF inhibitor, Zelboraf (vemurafenib), decreased activation of MEK and ERK (PMID: 22798288). 22798288
BRAF L597S melanoma sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor Dabrafenib + Trametinib Case Reports/Case Series Actionable In a clinical case study, Tafinlar (dabrafenib) and Mekinist (trametinib) resulted in increased growth inhibition in melanoma cell lines harboring BRAF L597S in culture, and resulted in tumor shrinkage in 89% (17/19) of tumors in a patient-derived xenograft (PDX) model harboring BRAF L597S, and treatment with Tafinlar (dabrafenib) and Mekinist (trametinib) resulted in a objective response with 34% tumor shrinkage in the patient from which the PDX model was derived from (PMID: 29903896). 29903896
BRAF L597S melanoma sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor Binimetinib + Encorafenib Preclinical - Cell culture Actionable In a preclinical study, the addition of Braftovi (encorafenib) to treatment with Mektovi (binimetinib) resulted in increased growth inhibition in melanoma cell lines harboring BRAF L597S in culture (PMID: 29903896). 29903896
BRAF L597S melanoma predicted - sensitive Dabrafenib Preclinical - Pdx & cell culture Actionable In a preclinical study, Tafinlar (dabrafenib) treatment inhibited ERK activation and proliferation of melanoma cell lines harboring BRAF L597S in culture, but did not result in tumor shrinkage as a single agent in a melanoma patient-derived xenograft (PDX) model harboring BRAF L597S (PMID: 29903896). 29903896
BRAF L597S Advanced Solid Tumor sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor Trametinib Preclinical Actionable Preclinical studies demonstrated the MEK inhibitor, Mekinist (trametinib) caused decreased activation of MEK and ERK in cells expressing BRAF L597S (PMID: 22798288). 22798288
BRAF L597S melanoma predicted - sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor Trametinib Preclinical - Pdx & cell culture Actionable In a preclinical study, Mekinist (trametinib) inhibited growth of melanoma cell lines harboring BRAF L597S in culture, and resulted in tumor shrinkage in 75% (8/12) subcutaneous tumors in one patient-derived xenograft (PDX) model harboring BRAF L597S that also harbored a BRAF variant of unknown significance, BRAF R239Q, however, was not sufficient to induce tumor shrinkage in a second PDX model with BRAF L597S, resulting only in tumor growth delay (PMID: 29903896). 29903896
BRAF L597S melanoma sensitive Encorafenib Preclinical - Cell culture Actionable In a preclinical study, Braftovi (encorafenib) inhibited ERK activation and proliferation of melanoma cell lines harboring BRAF L597S in culture (PMID: 29903896). 29903896
BRAF L597S melanoma sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor Cobimetinib Preclinical - Cell culture Actionable In a preclinical study, Cotellic (cobimetinib) inhibited growth of melanoma cell lines harboring BRAF L597S in culture (PMID: 29903896). 29903896
BRAF L597S melanoma sensitive MEK inhibitor (Pan) MEK1 Inhibitor MEK2 Inhibitor TAK-733 Phase I Actionable In a Phase I trial, one metastatic melanoma patient carrying a BRAF L597S mutation, had a partial response to the MEK inhibitor, TAK-733 (PMID: 22798288). 22798288
Clinical Trial Phase Therapies Title Recruitment Status
NCT03843775 Phase Ib/II Binimetinib + Encorafenib A Study of Binimetinib and Encorafenib in Advanced BRAF Mutant Cancers Recruiting