Through TIMER analysis, we observed positive correlations between CD274 and CD8A across 29 tumor types (more specifically, ACC, BLCA, BRCA, CESC, CHOL, COAD, DLBC, ESCA, HNSC, KIRC, KIRP, LGG, LIHC, LUAD, LUSC, MESO, OV, PAAD, PCPG, PRAD, READ, SARC, SKCM, STAD, TGCT, THCA, UCEC, UCS, UVM) (Supplement Figure 13). This evidence concerns the gene CD8A and neoplasm.