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Ref Type | Journal Article | ||||||||||||
PMID | (22735384) | ||||||||||||
Authors | Hauschild A, Grob JJ, Demidov LV, Jouary T, Gutzmer R, Millward M, Rutkowski P, Blank CU, Miller WH, Kaempgen E, Martín-Algarra S, Karaszewska B, Mauch C, Chiarion-Sileni V, Martin AM, Swann S, Haney P, Mirakhur B, Guckert ME, Goodman V, Chapman PB | ||||||||||||
Title | Dabrafenib in BRAF-mutated metastatic melanoma: a multicentre, open-label, phase 3 randomised controlled trial. | ||||||||||||
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Abstract Text | Dabrafenib, an inhibitor of mutated BRAF, has clinical activity with a manageable safety profile in studies of phase 1 and 2 in patients with BRAF(V600)-mutated metastatic melanoma. We studied the efficacy of dabrafenib in patients with BRAF(V600E)-mutated metastatic melanoma.We enrolled patients in this open-label phase 3 trial between Dec 23, 2010, and Sept 1, 2011. This report is based on a data cutoff date of Dec 19, 2011. Patients aged 18 years or older with previously untreated, stage IV or unresectable stage III BRAF(V600E) mutation-positive melanoma were randomly assigned (3:1) to receive dabrafenib (150 mg twice daily, orally) or dacarbazine (1000 mg/m(2) intravenously every 3 weeks). Patients were stratified according to American Joint Committee on Cancer stage (unresectable III+IVM1a+IVM1b vs IVM1c). The primary endpoint was investigator-assessed progression-free survival and was analysed by intention to treat; safety was assessed per protocol. This study is registered with ClinicalTrials.gov, number NCT01227889.Of the 733 patients screened, 250 were randomly assigned to receive either dabrafenib (187 patients) or dacarbazine (63 patients). Median progression-free survival was 5·1 months for dabrafenib and 2·7 months for dacarbazine, with a hazard ratio (HR) of 0·30 (95% CI 0·18-0·51; p<0·0001). At data cutoff, 107 (57%) patients in the dabrafenib group and 14 (22%) in the dacarbazine group remained on randomised treatment. Treatment-related adverse events (grade 2 or higher) occurred in 100 (53%) of the 187 patients who received dabrafenib and in 26 (44%) of the 59 patients who received dacarbazine. The most common adverse events with dabrafenib were skin-related toxic effects, fever, fatigue, arthralgia, and headache. The most common adverse events with dacarbazine were nausea, vomiting, neutropenia, fatigue, and asthenia. Grade 3-4 adverse events were uncommon in both groups.Dabrafenib significantly improved progression-free survival compared with dacarbazine.GlaxoSmithKline. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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Dabrafenib | Dabrafenib | 173 | 16 |
Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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Dabrafenib | Tafinlar | GSK2118436 | BRAF Inhibitor 25 | Tafinlar (dabrafenib) inhibits the activity of BRAF, including V600E, which results in the inhibition of tumor cell proliferation (PMID: 22735384). Tafinlar (dabrafenib) is FDA approved for BRAF V600E/K- positive unresectable or metastatic melanoma, and in combination with Mekinist (trametinib) for BRAF V600E/K-mutant melanoma, BRAF V600E-mutant non-small cell lung cancer, BRAF V600E-mutant anaplastic thyroid cancer, for adult and pediatric patients of 6 years or older with unresectable or metastatic solid tumors harboring BRAF V600E, and for pediatric patients of 1 year or older with low-grade glioma harboring BRAF V600E (FDA.gov). |
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 V600E | melanoma | sensitive | Dabrafenib | FDA approved - On Companion Diagnostic | Actionable | In a Phase III clinical trial (BREAK-3) that supported FDA approval, Tafinlar (dabrafenib) improved median progression-free survival compared to Deticene (dacarbazine) (5.1 vs 2.7 months, HR=0.3, p<0.0001) in patients with BRAF V600E positive melanoma (PMID: 22735384; NCT01227889). | detail... detail... 22735384 |