(a, d) Kaplan–Meier curves for OS in the CGGA693-GBM and CGGA325-GBM cohort stratified by 12 TMZR-RDEGs model in high- and low-risk. (b, e) The distribution plots of TMZR-RGPI, survival status and expression of 12 selected TMZR-RDEGs in the CGGA693-GBM and CGGA325-GBM cohort. (c, f) Time dependent ROC curves for TMZR-RGPI model in the CGGA693-GBM and CGGA325-GBM cohort.