Conversely, intermediate and lower levels of mDNAsi were associated with characteristics related to favorable prognosis, including oligodendroglioma, IDH mutant, 1p19q co-deletion, methylation of MGMT promoter, absence of TERT expression, grade 2, patient’s vital status as alive, no combined copy number alteration, absence of chromosomes 19/20 co-gain, ATRX mutant, and PN and NE transcriptome subtypes (Table 3). The gene discussed is IDH1; the disease is oligodendroglioma.