Kaplan Meier estimates for (A, C) L597 and (B, C) K601E mutated patients with BRAFi/MEKi combination and BRAFi or MEKi monotherapy for (A, B) progression-free survival (PFS) and (C, D) overall survival (OS). For non-V600 melanoma the two most frequent mutations were L597P/Q/R/S (15/38, 40%) and K601E (11/38, 29%). No significant differences were detected between the outcome for these unique non-V600 mutations compared with the full non-V600 cohort (PFS: L597 (P = .81); K601E (P = .004); OS: L597 (P = .57); K601E (P = .36).