Association of immune regulatory and checkpoint genes with RNA m6A regulators in multiple cancers. (A) Differential immune regulatory genes including chemokine, immunoinhibitor, immunostimulator, MHC, and receptor genes between clusters in each cancer type. (B) Differential immune regulatory genes including chemokine, immunoinhibitor, immunostimulator, MHC, and receptor genes between high- and low-risk groups in each cancer type. (C) Differential immune checkpoint inhibitory and stimulatory genes between clusters in each cancer type. (D) Differential immune checkpoint inhibitory and stimulatory genes between high- and low-risk groups in each cancer type. (* p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001).