PCNAP1 and hepatocellular carcinoma: ROC analyses revealed that PCNAP1 expression signature has an AUC of 0.8435 in distinguishing noninfectious HCC tissue from the matched normal tissue, with 65.85% sensitivity and 95.12% specificity and (1) a cut-off value of 6.985 (Figure 2(a)), an AUC of 0.8785 in HBV-infectious HCC tissue versus the matched normal tissue, with 66.67% sensitivity and 100% specificity; (2) a cut-off value of 8.725 (Figure 2(b)), an AUC of 0.6351 in HBV-infectious HCC tissue versus noninfectious HCC tissue, with 49.02% sensitivity and 78.05% specificity; and (3) a cut-off value of 18.42 (Figure 2(c)).