In terms of bulk RNA-seq data, PD1, PDL1 and PDL2 were highly expressed in MC1 GBM patients whereas CTLA4, CD80 and CD86 were highly expressed in MC2 GBM patients in both the TCGA database (Figure 6B) and CGGA database (Figure 6C). Here, PDCD1LG2 is linked to glioblastoma.