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  • Title: A randomised study of peginterferon and ribavirin for 16 versus 24 weeks in patients with genotype 2 chronic hepatitis C.
    Author: Yu ML, Dai CY, Huang JF, Hou NJ, Lee LP, Hsieh MY, Chiu CF, Lin ZY, Chen SC, Hsieh MY, Wang LY, Chang WY, Chuang WL.
    Journal: Gut; 2007 Apr; 56(4):553-9. PubMed ID: 16956917.
    Abstract:
    BACKGROUND: The recommended treatment for patients infected with hepatitis C virus genotype 2 (HCV2) is pegylated interferon (peginterferon) and ribavirin for 24 weeks. AIM: To assess whether a shorter 16-week treatment is as effective as a standard 24-week treatment. METHODS: Patients with HCV2 infection were randomised in a 1:2 ratio to either 16 weeks (n = 50) or 24 weeks (n = 100) of treatment with peginterferon alpha-2a (180 mug/week) and weight-based ribavirin 1000-1200 mg/day, with a 24-week follow-up period. A rapid virological response (RVR) was defined as seronegative for HCV RNA at 4 weeks of treatment, and the primary end point, sustained virological response (SVR), as seronegative for HCV RNA at the 24-week follow-up. RESULTS: The rate of RVR and SVR was 86% (43/50, 95% confidence interval (CI) 76% to 96%) and 94% (47/50, CI 87% to 100%), respectively, in the 16-week group, which was comparable to 87% (87/100, CI 80% to 94%) and 95% (95/100, CI 91% to 99%) in the 24-week group. Patients with RVR had a significantly higher SVR rate than patients without RVR in both 16-week (100% vs 57%, p = 0.015) and 24-week groups (98% vs 77%, p = 0.002). Multivariate analysis showed that RVR and age were independent factors associated with SVR. Both treatment arms were equally well tolerated. The incidence of alopecia was significantly higher in the 24-week group (49%) than in the 16-week group (20%, p = 0.001). CONCLUSION: 16 weeks and 24 weeks of peginterferon treatment with weight-based ribavirin at a dose of 1000-1200 mg/day provided equal efficacy in patients with HCV2 who achieved RVR at 4 weeks.
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