FAT1 and glioblastoma: For further validation of the above findings, gene expression correlation analysis was performed in the GBM dataset (n = 572) downloaded from TCGA website, where we found a significant positive correlation of the expression of FAT1 with TGF-β1 (r = 0.119, p = 0.002) and TGF-β2 (r = 0.123, p = 0.002) (Table S6).