We then divided the patients into high‐grade (III and IV) and low‐grade (II) gliomas to evaluate the effect of TGIF1 on their prognoses; a favorable effect of low TGIF1 expression on the prognosis of patients with low‐grade glioma was only observed when analyzing the RNA‐seq data from the CGGA and TCGA (Figure S2A–C). Here, TGIF1 is linked to glioma.