MGMT promoter was methylated in 58/60 oligodendroglial tumours (5 low, 21 intermediate, and 32 high level), in 4 IDH-mutant astrocytic (2 intermediate and 2 high level), and in 2 IDH-wt (1 low and 1 intermediate level). The gene discussed is IDH1; the disease is oligodendroglioma.