Detection of UBE2A mRNA expression by fluorescent quantitative polymerase chain reaction in HCC cell lines, including HepG2, Huh-7, Bel-7402, SNu-423 and Bel-7701 cells, and in normal human liver HL-7702 cells serving as the used as the control. *P<0.05, **P<0.01 and ***P<0.001. UBE2A, ubiquitin-conjugating enzyme E2A; HCC, hepatocellular carcinoma.