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  • Title: Long-term pegylated interferon monotherapy following 72 weeks of pegylated interferon and ribavirin in hepatitis C virus genotype-1-infected slow responders.
    Author: Watanabe S, Kobayashi Y, Kawata K, Noritake H, Chida T, Nagasawa M, Kageyama F, Kawamura K, Sasada Y, Suda T.
    Journal: Intern Med; 2015; 54(3):273-9. PubMed ID: 25748735.
    Abstract:
    OBJECTIVE: Slow responders to pegylated interferon (Peg-IFN) and ribavirin (RBV) among patients infected with hepatitis C virus (HCV) genotype 1 may benefit from an extended treatment course. The aim of this study was to determine the efficacy of persistent negative serum HCV RNA over 96 weeks during long-term Peg-IFN monotherapy following 72 weeks of combination therapy. METHODS: A total of 46 HCV genotype 1-infected slow responders were treated for 72 weeks with Peg-IFN and RBV combination therapy alone (n=25) or additional long-term biweekly treatment with 90 μg of Peg-IFN-α2a (n=21). The criterion for the completion of long-term Peg-IFN monotherapy was defined as the attainment of constantly negative HCV RNA in the serum over 96 weeks during IFN treatment. RESULTS: The patients with sustained negative serum HCV RNA during 96 weeks of IFN treatment had a higher rate of sustained virological response (SVR) than those without (81 vs. 40%, p=0.012). A multivariate analysis identified sustained negativity of serum HCV RNA over 96 weeks of IFN treatment to be a predictive factor for SVR. CONCLUSION: In the present study, sustained negative serum HCV RNA over 96 weeks during long-term Peg-IFN monotherapy following 72 weeks of combination therapy of Peg-IFN and RBV resulted in beneficial virological outcomes among HCV genotype 1-infected slow responders.
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