MYB and glioma: This group consists of 4 types of tumors: Diffuse astrocytoma, MYB- or MYB-Like 1 (MYB-L1)-altered, Angiocentric glioma, Polymorphous low-grade neuroepithelial tumor of the young and Diffuse low-grade glioma, Mitogen-Activated Protein Kinase (MAPK) pathway-altered.