RBP7 and cancer: It is noteworthy that RBP4 showed significant decreases in BLCA, BRCA, CHOL, GBM, HNSC, KICH, KIRC, LIHC, LUAD, LUSC, PCPG, and PRAD, while RBP7 exhibited reduced expression across 14 types of tumors, namely, BLCA, BRCA, CESC, COAD, HNSC, KICH, KIRP, LUAD, LUSC, PRAD, READ, STAD, THCA, and UCEC, which may have been one of the reasons affecting the outcomes of these cancers.