ALKBH5 expression showed positive association with ICP receptors such as TNFRSF14, CD40, CD96 and CD200R1, and ICP ligands such as PDCD1LG2, CD70, TNFSF14, ICOSLG and CD274 in glioma tissues (Supplementary Figure 11). This evidence concerns the gene PDCD1LG2 and glioma.