HDAC2 and glioblastoma: TAGLN and HDAC2 were strongly correlated with TP53 and the cell cycle‐related genes CCNE1, CDK2, and CDKN1A in the independent CGGA (IDH‐WT) and TCGA GBM/LGG (IDH‐WT) databases (Figure S5N,O, Supporting Information).