SAA4 and hepatocellular adenoma: A two-marker panel for the diagnosis of HCA, consisting of high PARs for GNYDAAQR (SAA4 ≥ 1.5443) and VLSLAQEQVGGSPEK (C4A ≥ 0.9058), was identified as the best combination of multiple markers (Table 4), with AUC values of 0.899 (95% confidence interval [CI]: 0.802–0.995; P = 0.796 by Hosmer-Lemeshow test).