CDK6 and glioblastoma: The fifth GBM, classified as IDH wild-type, subclass MYCN tumor (P4551_209T), carried TP53 mutations and several amplified loci, including FGFR1, CDK6, MET and PDGFRA, but not MYCN (Fig. 3, Additional file 2: Table S1, Additional file 6: Fig. S2).