AFP and hepatocellular carcinoma: The serum NRCAM levels (area under the curve –AUC 0.84, 95% CI 0.77–0.92, P < 0.001) displayed moderate diagnostic value for HCC, which was similar to AFP (AUC 0.86, 95% CI 0.79–0.92, P < 0.001) and PIVKA-II (AUC 0.86, 95% CI 0.79–0.94, P < 0.001).