FOXG1 and neoplasm of cerebral hemisphere: Although cerebral gliomas in the “RTK I (PDGFRA)” group also showed comparatively lower methylation of the SOX10 promoter, these cerebral tumors did not show hypermethylation in the FOXG1 promoter, unlike cerebellar gliomas and brainstem and thalamic gliomas with H3F3A K27M (Online Resource 1: Fig. S11).