ISG15 and glioblastoma: The K-M analysis showed that the survival probabilities of 10 out of 138 genes (CCL2, UPP1, F2R, ITGA5, sulforaphane [SFN], IRS1, CXCL8, MAP1LC3A, MET, and ISG15) were significantly different between the two expression groups in TCGA-GBM (Supplementary Table S3C, Figure 4).