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  • Title: HBsAg profiles in patients receiving peginterferon alfa-2a plus ribavirin for the treatment of dual chronic infection with hepatitis B and C viruses.
    Author: Yu ML, Lee CM, Chuang WL, Lu SN, Dai CY, Huang JF, Lin ZY, Hu TH, Chen CH, Hung CH, Wang JH, Chen CL, Kao JH, Lai MY, Liu CH, Su TH, Wu SS, Liao LY, Kuo HT, Chao YC, Tung SY, Yang SS, Chen PJ, Liu CJ, Chen DS.
    Journal: J Infect Dis; 2010 Jul 01; 202(1):86-92. PubMed ID: 20482252.
    Abstract:
    BACKGROUND: With use of peginterferon alfa-2a and ribavirin combination therapy in patients with dual chronic hepatitis B virus (HBV) and hepatitis C virus (HCV) infection, 11.2% of patients achieved clearance of hepatitis B surface antigen (HBsAg) at 6 months after treatment; however, reactivation of HBV DNA was observed in 36.3%. We investigated the predictive potential of HBsAg quantification. METHODS: HBsAg quantification was performed in 120 e antigen-negative patients dually infected with HBV and hepatitis C virus and treated with peginterferon alfa-2a/ribavirin for 48 weeks (HCV genotype 1; n = 74) or 24 weeks (HCV genotype 2/3; n = 46). HBsAg was quantified at baseline, week 4, week 12, end of treatment, and 24 weeks after treatment. RESULTS: The baseline median serum HBsAg level was 120 IU/mL and decreased gradually during treatment. Low baseline HBsAg was significantly associated with HBsAg clearance (40% for HBsAg level 20 IU/mL vs 2.2% for HBsAg level >20 IU/mL; P < .05). A decrease in HBsAg level from baseline to week 12 of 50% was associated with a reduced likelihood of HBV DNA reactivation in patients with baseline undetectable serum HBV DNA (positive predictive value, 89.5%). CONCLUSIONS: HBsAg quantification appears to be a useful indicator of posttreatment outcome in patients dually infected with HBV and hepatitis C virus.
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