The findings presented that the molecular subtype of brain lower-grade glioma (LGG), GBM, ACC, BRCA, COAD, ESCA, KIRP, PCPG, PRAD, OV, HNSC, LUSC, STAD, LIHC, and UCEC were all strongly correlated with RCC2 expression (Figure 4). This evidence concerns the gene RCC2 and glioblastoma.