CIBERSORT analysis demonstrated that there are high infiltration rates of regulatory T cells and dendritic cells and low infiltration rates of follicular helper T cells, M1 macrophages, and neutrophils in C1 subtype of glioblastoma with IDH mutation (Figure 4C; Wilcoxon rank sum test, P < 0.05). This evidence concerns the gene IDH1 and glioblastoma.