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The receiver operating characteristic (ROC) curves of serum AFP and TGR5 methylation in discriminating HCC from CHB patients. The area under the ROC curves (AUC) of TGR5 methylation was 0.672 (standard error [SE] 0.027, 95% confidence interval [CI] 0.610-0.730). The AUC of AFP was 0.633 (SE 0.035, CI 0.569-0.693).
