The expression levels of ABCC1 (log-rank p = 0.002, adjusted p = 0.008, adjusted HR = 1.656), ABCC4 (log-rank p = 0.026, adjusted p = 0.038, adjusted HR = 1.479), ABCC5 (log-rank p = 0.002, adjusted p = 0.001, adjusted HR = 1.928), and ABCC6 (log-rank p < 0.001, adjusted p = 0.001, adjusted HR = 0.534) were significantly associated with the overall survival of HCC patients in univariate and multivariate survival analysis (Table 1; Figures 3A–D). Here, ABCC6 is linked to hepatocellular carcinoma.