The results indicated that the expression TAP1 was positively related to TMB in CESC, breast invasive carcinoma (BRCA), COAD, lung adenocarcinoma (LUAD), PAAD, sarcoma (SARC), SKCM, and STAD, whereas the highest score was observed for the correlation of TAP1 and COAD. This evidence concerns the gene TAP1 and pancreatic adenocarcinoma.