The plasma levels of PCNAP1 in patients with HCC, HC, gastric cancer, and colorectal cancer were 2.15 ± 1.20, 0.82 ± 0.67, 1.00 ± 0.73, and 0.89 ± 0.63, respectively. This evidence concerns the gene PCNAP1 and hepatocellular carcinoma.