The results showed that the expression of SYK was positively related to the expression of immune checkpoint molecules and immunogenic cell death, such as CD80, CD40, PD-L1, PD1, and PD-L2, in multiple tumors, including LGG and GBM (p < 0.05, Supplementary Figure S2). The gene discussed is PDCD1LG2; the disease is glioblastoma.