STS in the predominantly LTS cluster B comprised three cases with oligodendroglioma (CNS WHO grade 3), of whom one displayed a CNV profile suggesting complete loss of chromosome 9 (including the locus for CDKN2A/B), while another tumor harbored losses in chromosomes 14q, 15q, and gain in 11q. Here, CDKN2A is linked to oligodendroglioma.