alexa FDA approval summary: vemurafenib for treatment of unresectable or metastatic melanoma with the BRAFV600E mutation.
Molecular Biology

Molecular Biology

Journal of Cytology & Histology

Author(s): Kim G, McKee AE, Ning YM, Hazarika M, Theoret M,

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Abstract On August 17, 2011, the U.S. Food and Drug Administration (FDA) approved vemurafenib tablets (Zelboraf, Hoffmann-LaRoche Inc.) for the treatment of patients with unresectable or metastatic melanoma with the BRAF(V600E) mutation as detected by an FDA-approved test. The cobas 4800 BRAF V600 Mutation Test (Roche Molecular Systems, Inc.) was approved concurrently. An international, multicenter, randomized, open-label trial in 675 previously untreated patients with BRAF(V600E) mutation-positive unresectable or metastatic melanoma allocated 337 patients to receive vemurafenib, 960 mg orally twice daily, and 338 patients to receive dacarbazine, 1,000 mg/m(2) intravenously every 3 weeks. Overall survival was significantly improved in patients receiving vemurafenib [HR, 0.44; 95\% confidence interval (CI), 0.33-0.59; P < 0.0001]. Progression-free survival was also significantly improved in patients receiving vemurafenib (HR, 0.26; 95\% CI, 0.20-0.33; P < 0.0001). Overall response rates were 48.4\% and 5.5\% in the vemurafenib and dacarbazine arms, respectively. The most common adverse reactions (≥30\%) in patients treated with vemurafenib were arthralgia, rash, alopecia, fatigue, photosensitivity reaction, and nausea. Cutaneous squamous cell carcinomas or keratoacanthomas were detected in approximately 24\% of patients treated with vemurafenib. Other adverse reactions included hypersensitivity, Stevens-Johnson syndrome, toxic epidermal necrolysis, uveitis, QT prolongation, and liver enzyme laboratory abnormalities. ©2014 American Association for Cancer Research. This article was published in Clin Cancer Res and referenced in Journal of Cytology & Histology

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