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). This evidence concerns the gene CTLA4 and testicular germ cell tumor.