Molecular Profile Detail


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Profile Name BRAF K601N
Gene Variant Detail

BRAF K601N (gain of function)

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


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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
BRAF K601N Advanced Solid Tumor resistant Vemurafenib Preclinical - Cell culture Actionable In a preclinical study, Zelboraf (vemurafenib) did not inhibit MEK and ERK activation in transformed cells over expressing the constitutively dimerized BRAF K601N (PMID: 26343582). 26343582
BRAF K601N hematologic cancer sensitive LY3009120 Preclinical - Cell culture Actionable In a preclinical study, a hematological tumor cell line harboring BRAF K601N demonstrated sensitivity to LY3009120 in culture (PMID: 26732095). 26732095
BRAF K601N lung non-small cell carcinoma no benefit Vemurafenib Case Reports/Case Series Actionable In a Phase II trial, Zelboraf (vemurafenib) treatment did not result in response in the cohort of 15 non-small cell lung cancer patients with non-V600 BRAF mutations, which included 2 patients harboring BRAF K601N, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). 31959346
BRAF K601N chronic lymphocytic leukemia sensitive PLX8394 Preclinical - Cell culture Actionable In a preclinical study, PLX8394 treatment inhibited Erk signaling and reduced proliferation of chronic lymphocytic leukemia cells harboring BRAF K601N in culture (PMID: 30559419). 30559419
BRAF K601N lung non-small cell carcinoma predicted - sensitive LTT462 + LXH 254 Case Reports/Case Series Actionable In a Phase Ib trial, LTT462 and LXH 254 combination therapy was well tolerated and resulted in an unconfirmed partial response (PR) in 4% (2/49) and stable disease (SD) in 33% (16/49) of patients with advanced or metastatic KRAS- or BRAF-mutant non-small cell lung cancer, with 1 patient harboring BRAF K601N achieving an unconfirmed PR (Ann Oncol 31 (suppl 4):S881-S882; NCT02974725). detail...