BRAF and neoplasm: In pedLGG (n = 298), BRAF wildtype samples were enriched in Immune Desert (n = 24, p = 5 × 10−6), BRAF-KIAA1549 fusion-positive tumours were grouped into Myeloid Predominant (n = 82, p = 0.005) and BRAF p.V600E samples showed a trend toward Paediatric Inflamed (n = 7, p = 0.07).