Kaplan-Meier curves of progression free survival (PFS) (A) and overall survival (OS) (B) based on BRAF gene copy number status, diploid versus copy gain. Median PFS for BRAF diploid and copy gain, 6.3 (95% CI: 3.0, 8.8) months and 3.9 (95% CI: 2.6, 5.3) months (P=0.023), respectively (A). Median OS for BRAF diploid and copy gain, 11.0 (95% CI: 8.8, 18.4) months and 8.5 (95% CI: 7.3, 10.4) months (P=0.046), respectively (B).