In patients treated with anti-PD-1, V600K (n=19) had superior outcomes than V600E (n=84), including response rate (53% vs 29%, p=0.059), PFS (median 19 vs 2.7 months, p=0.049) and overall survival (20.4 vs 11.7 months, p=0.081)….An independent cohort of V600E/K BRAF-mutant metastatic melanoma patients treated with anti-PD-1 immunotherapy (pembrolizumab or nivolumab)...