With the exception of HCC tissues, qPCR detection also revealed the generally higher levels of PSMC2 in a number of HCC cell lines, including HCCLM3, SK-HEP-1, BEL-7404, SNU423, and Hep3B2.1–7 than normal cell line HL-7702 (Fig. 1B). This evidence concerns the gene PSMC2 and hepatocellular carcinoma.