The serum concentration of CPN was similar in HCC patients compared with controls without HCC (45.5±16.5 ng/mg vs. 44.9±20.1 ng/mg; p = 0.91), as it was IgM concentration (36.7±11 vs 40.5±15.5; p = 0.34). The gene discussed is CPN1; the disease is hepatocellular carcinoma.