RAB42 and hepatocellular carcinoma: Four HCC cohorts in the HCCDB database showed that the RAB42 mRNA level was significantly increased in HCC compared with adjacent liver tissue, namely HCCDB12 (p = 0.01194), HCCDB13 (p = 1.739E−04), HCCDB16 (p = 1.199E−03), and HCCDB18 (p = 9.05E−08) (Figures 2A,B).