In the CGGA (IDH‐WT) and TCGA GBM/LGG (IDH WT) datasets, TAGLN and HDAC2 mRNA levels were positively correlated (Figure S5N,O, Supporting Information) and patients whose tumors were TAGLNhiHDAC2hi had a worse prognosis (Figure S6N,O, Supporting Information). Here, HDAC2 is linked to glioblastoma.