Performed receiver operator characteristic (ROC) curve analysis. ROC curve analyses showed that the sensitivity and specificity of GP73 for significant fibrosis diagnosis were 62.81 (95 CI: 57.26 ?8.12 ), 80.05 (95 CI: 80.05 ?3.68 ) respectively, where the cut-off value was set at 76.6 ng/ml. The area under ROC curve is 0.76 (95 CI:GP73, a Asiaticoside A site marker for Evaluating HBV ProgressionTable 2. Serum GP73 concentration related with liver stiffness ( FibroScan), ALT, Fibrosis grading, and serum HBV DNA.ParameterNGP73(ng/mL) Mean ?SD 95 CILiver stiffness , F1 F1 F2 
F3 Fa324 117 79 10553.70628.84 62.54634.31 22948146 78.46645.35 91.90644.51 166.0687.50.55?6.85 56.27?8.60 68.30?8.61 73.28?0.51 151.2?80.Fibrosis gradingb 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 ALT(U/L)c # 40 , 80 80?00 . 200 HBV DNA(log10 IU/ml)b negative ,4 4 6a48 232 35 57 26 40 1856.75638.33 60.37640.07 72.03637.75 80.03659.48 93.80649.04 92.28669.69 94.40652.88 458.16119.45.62?7.88 55.19?5.55 59.06?4.99 64.25?5.81 73.99?13.6 68.10?20.7 68.10?20.7 94.67?21.To characterize GP73 as a new diagnostic tissue marker of significant fibrosis ( S2), or moderate/severe inflammation ( G2), we conducted a ROC analysis. The Cucurbitacin I site results showed that GP73 had a striking performance for diagnosing S2 or G2 in patients with chronic HBV infections. In patients with nearly normal ALT, the sensitivity and specificity of GP73 for S2 diagnosis were 62.5 (95 CI: 56.26?8.45 ) and 80.0 (75.9?83.68 ) respectively, where the cut-off was set at 82 ng/ml (Fig. 2D); The PPV, NPV, and diagnosing accuracy were 87.76 , 67.98 , and 80.29 , respectively. For G2 diagnosis, the sensitivity and specificity were 53.2 (95 CI: 47.35?58.95 ) and 80.21(75.89?4.05 ) respectively, the cut-off was 85 ng/ml (Fig. 2, E). The PPV, NPV, and diagnosing accuracy were 73.11 , 54.78 , and 68.64 , respectively. If the cut-off was set at 138.4 ng/ml for cirrhosis (S 3.5?) diagnosis, the sensitivity and specificity were 38.24 (22.17?6.44 ) and 90.18 (87.00?2.80 ) respectively (Fig. 2.F). The PPV, NPV, and diagnosing accuracy were 94.95 , 23.21 , and 86.44 , respectively.Which factors related with serum GP73 levels?Multivariate ordinal logistic 23727046 regression analysis was performed to adjust other potential confounders (Sex, Age, ALT, total bilirubin, albumin, Platelet). The results showed that serum GP73 was an independent risk factor of liver fibrogenesis in CHB patients with nearly normal ALT. The relative risk was increased 1.106 with the serum GP73 increasing 10 ng/mL. The results were showed in table 3. To explore the causes of GP73 increasing in serum, we further performed a Pearson’s correlation analysis on several biomarkers, which reflected virus replication, hepatocytes injury, and other liver functions. As Fig. 3A and 3B showed, that ALT, total bilirubin (Tbil) were positively correlated with serum GP73 concentration. The correlation coefficient r were 0.25, 0.18, respectively (Fig. 3, B, F). The interesting data was that ALT seemed not significantly correlated with GP73 concentration in 472 patients with nearly normal ALT (r = 0.014, p = 0.76), by contraries, the total of 633 patients was (r = 0.25, p = 0.0003) (Fig. 3B, Table 2). Similarly, although HBV DNA was not correlated with serum GP73 concentration (r = 0.01, p = 0.89), the serum GP73 concentration of patients with HBV DNA above 4log was significantly higher than those of patients with HBV DNA below 4 log (p = 0.007) (Fig. 3C and 3D; Table 2). The other interesting result was tha.Performed receiver operator characteristic (ROC) curve analysis. ROC curve analyses showed that the sensitivity and specificity of GP73 for significant fibrosis diagnosis were 62.81 (95 CI: 57.26 ?8.12 ), 80.05 (95 CI: 80.05 ?3.68 ) respectively, where the cut-off value was set at 76.6 ng/ml. The area under ROC curve is 0.76 (95 CI:GP73, a Marker for Evaluating HBV ProgressionTable 2. Serum GP73 concentration related with liver stiffness ( FibroScan), ALT, Fibrosis grading, and serum HBV DNA.ParameterNGP73(ng/mL) Mean ?SD 95 CILiver stiffness , F1 F1 F2 F3 Fa324 117 79 10553.70628.84 62.54634.31 22948146 78.46645.35 91.90644.51 166.0687.50.55?6.85 56.27?8.60 68.30?8.61 73.28?0.51 151.2?80.Fibrosis gradingb 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 ALT(U/L)c # 40 , 80 80?00 . 200 HBV DNA(log10 IU/ml)b negative ,4 4 6a48 232 35 57 26 40 1856.75638.33 60.37640.07 72.03637.75 80.03659.48 93.80649.04 92.28669.69 94.40652.88 458.16119.45.62?7.88 55.19?5.55 59.06?4.99 64.25?5.81 73.99?13.6 68.10?20.7 68.10?20.7 94.67?21.To characterize GP73 as a new diagnostic tissue marker of significant fibrosis ( S2), or moderate/severe inflammation ( G2), we conducted a ROC analysis. The results showed that GP73 had a striking performance for diagnosing S2 or G2 in patients with chronic HBV infections. In patients with nearly normal ALT, the sensitivity and specificity of GP73 for S2 diagnosis were 62.5 (95 CI: 56.26?8.45 ) and 80.0 (75.9?83.68 ) respectively, where the cut-off was set at 82 ng/ml (Fig. 2D); The PPV, NPV, and diagnosing accuracy were 87.76 , 67.98 , and 80.29 , respectively. For G2 diagnosis, the sensitivity and specificity were 53.2 (95 CI: 47.35?58.95 ) and 80.21(75.89?4.05 ) respectively, the cut-off was 85 ng/ml (Fig. 2, E). The PPV, NPV, and diagnosing accuracy were 
73.11 , 54.78 , and 68.64 , respectively. If the cut-off was set at 138.4 ng/ml for cirrhosis (S 3.5?) diagnosis, the sensitivity and specificity were 38.24 (22.17?6.44 ) and 90.18 (87.00?2.80 ) respectively (Fig. 2.F). The PPV, NPV, and diagnosing accuracy were 94.95 , 23.21 , and 86.44 , respectively.Which factors related with serum GP73 levels?Multivariate ordinal logistic 23727046 regression analysis was performed to adjust other potential confounders (Sex, Age, ALT, total bilirubin, albumin, Platelet). The results showed that serum GP73 was an independent risk factor of liver fibrogenesis in CHB patients with nearly normal ALT. The relative risk was increased 1.106 with the serum GP73 increasing 10 ng/mL. The results were showed in table 3. To explore the causes of GP73 increasing in serum, we further performed a Pearson’s correlation analysis on several biomarkers, which reflected virus replication, hepatocytes injury, and other liver functions. As Fig. 3A and 3B showed, that ALT, total bilirubin (Tbil) were positively correlated with serum GP73 concentration. The correlation coefficient r were 0.25, 0.18, respectively (Fig. 3, B, F). The interesting data was that ALT seemed not significantly correlated with GP73 concentration in 472 patients with nearly normal ALT (r = 0.014, p = 0.76), by contraries, the total of 633 patients was (r = 0.25, p = 0.0003) (Fig. 3B, Table 2). Similarly, although HBV DNA was not correlated with serum GP73 concentration (r = 0.01, p = 0.89), the serum GP73 concentration of patients with HBV DNA above 4log was significantly higher than those of patients with HBV DNA below 4 log (p = 0.007) (Fig. 3C and 3D; Table 2). The other interesting result was tha.