DLGAP5 and hepatocellular carcinoma: We also evaluated the expression level of DLGAP5 in various HCC cell lines by RT-PCR and found that DLGAP5 was significantly expressed in SK-hep1, Huh7, SMMC7721, MHCC97L, MHCC97H, PLC, HepG2, QGY7703, BEL7402 and BEL7404 cells but not in the normal liver cell lines LO2 and WRL68 (Figure 3A).