Recent literature identified increased DSC-CBV in IDH-mutant 1p19q codeleted oligodendrogliomas grade 3, as compared to IDH-mutant 1p19q non-codeleted gliomas in relation to the typical increased vascularisation of oligodendrogliomas and decreased DSC-CBV, as compared to IDH-wild-type GBMs (glioblastomas) [129,158,159,160,161,162]. The gene discussed is IDH2; the disease is oligodendroglioma.