IDH2 and glioma: reported decreased expression of different immune cell‐related genes, including CD8 (CD8A), CD4, CD19, CD20 (MS4A1), CD11b (ITGAM), FOXP3, CD163, CD68, CD56 (NCAM1), and S100A4 in IDH‐mutant glioma datasets of TCGA (n = 390) and CGGA (n = 312).