Background & Aims:The clinical value of quantitative hepatitis B surface antigen(qHBsAg) titer in patients taking nucleot(s)ide analogs(NAs) is still *** study aims to investigate the dynamic changes of qHBsAg tit...
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Background & Aims:The clinical value of quantitative hepatitis B surface antigen(qHBsAg) titer in patients taking nucleot(s)ide analogs(NAs) is still *** study aims to investigate the dynamic changes of qHBsAg titers and its significance for predicting virological response(VR) and serological response(SR) to long-term entecavir(ETV) treatment. Methods:Forty-eight ETV-nai've patients were enrolled and followed prospectively for 4 years, and 32 of them were HBeAg-positive at *** alanine aminotransferase(ALT),qualitative hepatitis B virus(HBV) serological markers,and HBV DNA were detected;and qHBsAg titers were measured using Elecsys? HBsAgⅡQuant Assay. Results:The mean baseline HBV-DNA and qHBsAg were 7.51 log copies/mL and 3.78 log IU/mL,*** 48 months of ETV treatment,the rates of VR(<291 copies/mL),ALT normalization and SR(HBeAg/anti-HBe) were 89.6%(43/48),89.6%(43/48) and 34.4%(11/32), *** was a decline in qHBsAg titers from baseline to months 48,ranging from 3.78 to 3.10 log IU/*** greatest decline of HBsAg was observed in the first 3 months of treatment (0.47 log10 IU/mL),which was significantly correlated with corresponding HBV-DNA decreasing (3.89 log copies/mL)(P=0.032).By using ROC analysis,qHBsAg titers at baseline(AUC=0.647) and 3 months after treatment(AUC=0.586) had poor power in predicting of 48-month VR;qHBsAg titers at baseline(AUC=0.779) and 3 months after ETV treatment(AUC=0.658) had poor power in predicting of 48-month SR in HBeAg-positive patients at ***,the declines of qHBsAg in the first 3 months of treatment also had poor power in predicting of either 48-month VR or SR. Conclusions:ETV is efficacious in NAs-nai've patients,and qHBsAg titers declined significantly in the first 3 months of ETV ***,qHBsAg titer is not a good predictor of 4-year virological and HBeAg/anti-HBe serological responses in this cohort.
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