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Ref Type | Journal Article | ||||||||||||
PMID | (31959346) | ||||||||||||
Authors | Mazieres J, Cropet C, Montané L, Barlesi F, Souquet PJ, Quantin X, Dubos-Arvis C, Otto J, Favier L, Avrillon V, Cadranel J, Moro-Sibilot D, Monnet I, Westeel V, Le Treut J, Brain E, Trédaniel J, Jaffro M, Collot S, Ferretti GR, Tiffon C, Mahier-Ait Oukhatar C, Blay JY | ||||||||||||
Title | Vemurafenib in non-small-cell lung cancer patients with BRAFV600 and BRAFnonV600 mutations. | ||||||||||||
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Abstract Text | BRAF mutations occurring in 1%-5% of patients with non-small-cell lung cancer (NSCLC) are therapeutic targets for these cancers but the impact of the exact mutation on clinical activity is unclear. The French National Cancer Institute (INCA) launched the AcSé vemurafenib trial to assess the efficacy and safety of vemurafenib in cancers with various BRAF mutations. We herein report the results of the NSCLC cohort.Tumour samples were screened for BRAF mutations in INCA-certified molecular genetic centres. Patients with BRAF-mutated tumours progressing after ≥1 line of treatment were proposed vemurafenib 960 mg twice daily. Between October 2014 and July 2018, 118 patients were enrolled in the NSCLC cohort. The primary outcome was the objective response rate (ORR) assessed every 8 weeks (RECIST v1.1). A sequential Bayesian approach was planned with an inefficacy bound of 10% for ORR. If no early stopping occurred, the treatment was of interest if the estimated ORR was ≥30% with a 90% probability. Secondary outcomes were tolerance, response duration, progression-free survival (PFS), and overall survival (OS).Of the 118 patients enrolled, 101 presented with a BRAFV600 mutation and 17 with BRAFnonV600 mutations; the median follow-up was 23.9 months. In the BRAFnonV600 cohort, no objective response was observed and this cohort was stopped. In the BRAFV600 cohort, 43/96 patients had objective responses. The mean Bayesian estimated success rate was 44.9% [95% confidence intervals (CI) 35.2%-54.8%]. The ORR had a 99.9% probability of being ≥30%. Median response duration was 6.4 months, median PFS was 5.2 months (95% CI 3.8-6.8), and OS was 10 months (95% CI 6.8-15.7). The vemurafenib safety profile was consistent with previous publications.Routine biomarker screening of NSCLC should include BRAFV600 mutations. Vemurafenib monotherapy is effective for treating patients with BRAFV600-mutated NSCLC but not those with BRAFnonV600 mutations.ClinicalTrials.gov identifier: NCT02304809. |
Molecular Profile | Treatment Approach |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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BRAF V600X | lung non-small cell carcinoma | predicted - sensitive | Vemurafenib | Phase II | Actionable | In a Phase II trial, Zelboraf (vemurafenib) treatment resulted in a objective response rate of 44.8% (43/96), median duration of response of 6.4 months, median progression-free survival of 5.2 months, and median overall survival of 10 months in non-small cell lung cancer patients with BRAF V600 mutations (PMID: 31959346; NCT02304809). | 31959346 |
BRAF G469V | 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 1 patient harboring BRAF G469V, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). | 31959346 |
BRAF G466A | 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 1 patient harboring BRAF G466A, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). | 31959346 |
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 G469A | lung non-small cell carcinoma | resistant | 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 3 patients harboring BRAF G469A, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). | 31959346 |
BRAF G596R | 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 1 patient harboring BRAF G596R, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). | 31959346 |
BRAF N581S | 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 3 patients harboring BRAF N581S, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). | 31959346 |
BRAF G466V | 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 3 patients harboring BRAF G466V, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). | 31959346 |
BRAF V600D | lung non-small cell carcinoma | predicted - sensitive | Vemurafenib | Case Reports/Case Series | Actionable | In a Phase II trial, Zelboraf (vemurafenib) treatment resulted in a objective response rate of 44.8% (43/96), median duration of response of 6.4 months, median progression-free survival (PFS) of 5.2 months, and median overall survival of 10 months in non-small cell lung cancer patients with BRAF V600 mutations, with a PFS of 3.8 months in the patient harboring BRAF V600D (PMID: 31959346; NCT02304809). | 31959346 |
BRAF V600M | lung non-small cell carcinoma | predicted - sensitive | Vemurafenib | Case Reports/Case Series | Actionable | In a Phase II trial, Zelboraf (vemurafenib) treatment resulted in a objective response rate of 44.8% (43/96), median duration of response of 6.4 months, median progression-free survival (PFS) of 5.2 months, and median overall survival of 10 months in non-small cell lung cancer patients with BRAF V600 mutations, with a PFS of 5.9 months in the patient harboring BRAF V600M (PMID: 31959346; NCT02304809). | 31959346 |
BRAF K601E | 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 3 patients harboring BRAF K601E, and enrollment in this cohort was discontinued (PMID: 31959346; NCT02304809). | 31959346 |
BRAF V600K | lung non-small cell carcinoma | predicted - sensitive | Vemurafenib | Case Reports/Case Series | Actionable | In a Phase II trial, Zelboraf (vemurafenib) treatment resulted in a objective response rate of 44.8% (43/96), median duration of response of 6.4 months, median progression-free survival (PFS) of 5.2 months, and median overall survival of 10 months in non-small cell lung cancer patients with BRAF V600 mutations, with a PFS of 2.1 and 6.8 months in the 2 patients harboring BRAF V600K (PMID: 31959346; NCT02304809). | 31959346 |