EZHIP and diffuse midline glioma: In the diffuse midline gliomas H3K27‐mutant/EZHIP overexpression subtype, the H3K27 mutation was confirmed in two out of four samples (CNS_019 and CNS_114), whereas CNS_065 tested negative (Figure 6C) and CNS_006 was not evaluated due to a lack of remaining material.