The cluster 1 group is significantly correlated with dead (p < 0.001), older patients (p < 0.001), higher grade (p < 0.001), glioblastoma and astrocytoma (p < 0.0001), IDH-wild type (p < 0.001), 1p19q-non-codel (p < 0.001), unmethylated MGMT status promoter (p < 0.001), high immune score (p < 0.001), high stromal score (p < 0.001), high ESTIMATE score (p < 0.001), and low tumor purity (p < 0.001), while cluster 2 group is significantly correlated with the opposite results. This evidence concerns the gene MGMT and astrocytoma (excluding glioblastoma).