To our surprise, the expression of inhibitor (Supplementary Figure S5E) and MHC-related genes (Supplementary Figure S5F) in the CGGA-GBM cohort was found to be similar to the results of the TCGA-GBM cohort, but the expression of stimulant-related genes (Supplementary Figure S5D) showed significant differences in the two clusters. Here, HLA-C is linked to glioblastoma.