alexa Nivolumab in previously untreated melanoma without BRAF mutation.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Robert C, Long GV, Brady B, Dutriaux C, Maio M,

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Abstract BACKGROUND: Nivolumab was associated with higher rates of objective response than chemotherapy in a phase 3 study involving patients with ipilimumab-refractory metastatic melanoma. The use of nivolumab in previously untreated patients with advanced melanoma has not been tested in a phase 3 controlled study. METHODS: We randomly assigned 418 previously untreated patients who had metastatic melanoma without a BRAF mutation to receive nivolumab (at a dose of 3 mg per kilogram of body weight every 2 weeks and dacarbazine-matched placebo every 3 weeks) or dacarbazine (at a dose of 1000 mg per square meter of body-surface area every 3 weeks and nivolumab-matched placebo every 2 weeks). The primary end point was overall survival. RESULTS: At 1 year, the overall rate of survival was 72.9\% (95\% confidence interval [CI], 65.5 to 78.9) in the nivolumab group, as compared with 42.1\% (95\% CI, 33.0 to 50.9) in the dacarbazine group (hazard ratio for death, 0.42; 99.79\% CI, 0.25 to 0.73; P<0.001). The median progression-free survival was 5.1 months in the nivolumab group versus 2.2 months in the dacarbazine group (hazard ratio for death or progression of disease, 0.43; 95\% CI, 0.34 to 0.56; P<0.001). The objective response rate was 40.0\% (95\% CI, 33.3 to 47.0) in the nivolumab group versus 13.9\% (95\% CI, 9.5 to 19.4) in the dacarbazine group (odds ratio, 4.06; P<0.001). The survival benefit with nivolumab versus dacarbazine was observed across prespecified subgroups, including subgroups defined by status regarding the programmed death ligand 1 (PD-L1). Common adverse events associated with nivolumab included fatigue, pruritus, and nausea. Drug-related adverse events of grade 3 or 4 occurred in 11.7\% of the patients treated with nivolumab and 17.6\% of those treated with dacarbazine. CONCLUSIONS: Nivolumab was associated with significant improvements in overall survival and progression-free survival, as compared with dacarbazine, among previously untreated patients who had metastatic melanoma without a BRAF mutation. (Funded by Bristol-Myers Squibb; CheckMate 066 ClinicalTrials.gov number, NCT01721772.). This article was published in N Engl J Med and referenced in Journal of Clinical & Cellular Immunology

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