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Gene | BRAF |
Variant | V600E/K |
Impact List | missense |
Protein Effect | gain of function |
Gene Variant Descriptions | BRAF V600E/K indicates a mutation that results in the replacement of the valine (V) at amino acid 600 of the Braf protein by either a glutamate (E) or lysine (K). V600E/K mutations are hotspot mutations in Braf that result in increased Braf kinase activity (PMID: 15035987). |
Associated Drug Resistance | |
Category Variants Paths |
BRAF mutant BRAF act mut BRAF V600E/K BRAF mutant BRAF V600X BRAF V600E/K |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|
BRAF V600E/K | melanoma | sensitive | Trametinib | Phase I | Actionable | In a Phase I trial, Mekinist (trametinib) resulted in complete response in 7% (2/30), partial response in 33% (10/30), and stable disease in 37% (11/30) of BRAF-mutant melanoma patients (PMID: 22805292; NCT00687622). | 22805292 |
BRAF V600E/K | melanoma | sensitive | Trametinib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III trial (METRIC) that supported FDA approval, Mekinist (trametinib) treatment, as compared to Deticine (dacarbazine) or Taxol (paclitaxel) treatment, resulted in improved progression-free survival of 4.8 months versus 1.5 months and an overall six month survival rate of 81% versus 67% in patients with BRAF V600E/K positive metastatic melanoma (PMID: 22663011; NCT01245062). | 22663011 detail... detail... |
BRAF V600E/K | skin melanoma | sensitive | Vemurafenib | Guideline | Actionable | Zelboraf (vemurafenib) and Cotellic (cobimetinib) combination therapy is included in cutaneous melanoma guidelines for patients with metastatic or unresectable disease harboring a BRAF V600 activating mutation (NCCN.org). | detail... |
BRAF V600E/K | melanoma | sensitive | Dabrafenib + Trametinib | Phase II | Actionable | In a Phase II trial (S1320), intermittent dosing (3-week-off, 5-week-on) of Tafinlar (dabrafenib) and Mekinist (trametinib) did not improve median progression-free survival (5.5 v 9.0 months; HR=1.36, p=0.064, two-sided alpha=0.2) compared to continuous dosing in melanoma patients harboring BRAF V600E or V600K, and there were no significant differences in median overall survival, treatment response, or toxicity between the two treatment groups (PMID: 33020646; NCT02196181). | 33020646 |
BRAF V600E/K | melanoma | sensitive | Dabrafenib + Trametinib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III trial (COMBI-AD) that supported FDA approval, adjuvant treatment with the combination of Tafinlar (dabrafenib) and Mekinist (trametinib) resulted in an improved estimated 3-year relapse-free survival rate (58% vs 39%, HR=0.47, P<0.001) and 3-year overall survival rate (86% vs 77%, HR=0.57; 95% CI, 0.42 to 0.79, P=0.0006) compared to placebo in stage III melanoma patients harboring BRAF V600E or V600K mutations (PMID: 28891408; NCT01682083). | detail... 28891408 detail... |
BRAF V600E/K | melanoma | sensitive | Dabrafenib + Trametinib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III trial (COMBI-v) that supported FDA approval, the combination of Tafinlar (dabrafenib) and Mekinist (trametinib) resulted in an improved overall survival rate at 12 months (72% vs 65%, HR=0.69, p=0.005), median progression-free survival (11.4 vs 7.3 months, HR=0.56, p<0.001), and objective response rate (64% vs 51%, p<0.001) compared to Zelboraf (vemurafenib) in melanoma patients harboring BRAF V600E or V600K (PMID: 25399551; NCT01597908). | detail... detail... 25399551 |
BRAF V600E/K | melanoma | sensitive | Binimetinib + Encorafenib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III (COLUMBUS) trial that supported FDA approval, Braftovi (encorafenib) in combination with Mektovi (binimetinib) demonstrated improved tolerability profile and efficacy, resulted in a progression-free survival of 14.9 months in patients with advanced melanoma harboring BRAF V600E/K mutations, comparing to 7.3 months in the Zelboraf (vemurafenib) group (HR=0.54, p<0.0001) (PMID: 29573941; NCT01909453) and both BRAF V600E and V600K are on the companion diagnostic. | 29573941 detail... detail... detail... |
BRAF V600E/K | melanoma | sensitive | Binimetinib + Encorafenib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III (COLUMBUS) trial that supported FDA approval, Braftovi (encorafenib) in combination with Mektovi (binimetinib) resulted in a median overall survival (OS) of 33.6 months, a 1-year OS rate of 77.5%, and a 2-year OS rate of 57.7% in patients with advanced melanoma harboring BRAF V600E/K mutations compared to a median OS of 16.9 months and 1- and 2-year OS rates of 63.1% and 43.2%, respectively, in the Zelboraf (vemurafenib) treated group (PMID: 30219628; NCT01909453). | detail... detail... detail... 30219628 |
BRAF V600E/K | skin melanoma | sensitive | Binimetinib + Encorafenib | Guideline | Actionable | Braftovi (encorafenib) in combination with Mektovi (binimetinib) is included in guidelines as first-line and second-line therapy for patients with metastatic or unresectable cutaneous melanoma harboring BRAF V600E or V600K mutations (PMID: 30959471; NCCN.org). | 30959471 detail... |
BRAF V600E/K | melanoma | predicted - sensitive | Vemurafenib + XL888 | Phase I | Actionable | In a Phase I trial, combined Zelboraf (vemurafenib) and XL888 treatment in patients with unresectable, BRAF inhibitor naive, metastatic melanoma harboring BRAF V600E (n=20) or V600K (n=1) resulted in complete and partial responses in 15% (3/20) and 60% (12/20) of evaluable patients, respectively, a 9.2-month median progression free survival, and a 34.6-month overall survival (PMID: 29674508). | 29674508 |
BRAF V600E/K | melanoma | sensitive | Cobimetinib + Vemurafenib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III trial (coBRIM) that supported FDA approval, treatment with the combination of Zelboraf (vemurafenib) and Cotellic (cobimetinib) resulted in an improved progression-free survival of 12.3 months, compared to 7.2 months with Zelboraf (vemurafenib) plus placebo, among patients with BRAF V600-mutated metastatic melanoma, and BRAF V600E and BRAF V600K are on the companion diagnostic (PMID: 27480103; NCT01689519). | detail... detail... 27480103 |
BRAF V600E/K | melanoma | predicted - sensitive | Lifirafenib | Case Reports/Case Series | Actionable | In a Phase I trial, Lifirafenib (BGB-283) treatment resulted in partial response in 15.1% (8/53) of solid tumor patients with BRAF mutations, including 5 of 23 patients with melanoma harboring BRAF V600E or V600K overall, and in the dose expansion phase 57.1% (4/7) patient with BRAF V600-mutant melanoma had a partial response (PMID: 32182156; NCT02610361). | 32182156 |