The expression of 6 main immune checkpoints, namely, PDCD1 (PD1), CD274 (PDL1), PDCD1LG2 (PDL2), CTLA4, CD80 and CD86, was determined and compared between two GBM cell subsets and two MCs of GBM patients (Figure 6). The gene discussed is PDCD1LG2; the disease is glioblastoma.