MRTO4 and hepatocellular carcinoma: As shown in Figure 1A, MRTO4 was highly expressed in 17 tumors, including BLCA, BRCA, CESC, COAD, CHOL, ESCA, GBM, HNSC, KIRP, KIRC, LIHC (also known as HCC), LUAD, LUSC, PRAD, READ, STAD, and UCEC, and lowly expressed in KICH and PCPG, compared with normal tissues.