PD-1 expression was correlated with TMB in BRCA, BLCA, COAD, CESC, HNSC, lymphoid neoplasm diffuse large b-cell lymphoma (DLBC), LGG, KIRP, PRAD, pancreatic adenocarcinoma (PAAD), testicular germ cell tumors (TGCT), THCA, THYM, and UCEC (Figure 10A); and CTLA4 expression was correlated with TMB in DLBC, BRCA, COAD, OV, HNSC, mesothelioma, LGG, SKCM, UCEC, PAAD, THYM, and TGCT (Figure 10B). Here, CTLA4 is linked to mesothelioma.