PFS by independent review in patients with BRAF V600–mutant LGGa. Kaplan-Meier plots showing PFS in patients with BRAF V600–mutant LGG treated with (A) trametinib monotherapy (n = 13) or (B) dabrafenib + trametinib combination therapy (n = 36), assessed by independent review (RANO 2017). aTwo patients with BRAF V600–mutant HGG were enrolled in part C and are included in this predominantly LGG cohort as a diagnosis of HGG did not define any other disease-specific cohort in the trial. HGG, high-grade glioma; LGG, low-grade glioma; PFS, progression-free survival; RANO, Response Assessment in Neuro-Oncology.