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  • Title: Peginterferon alfa-2a and peginterferon alfa-2b combined with ribavirin in patients with genotype 1 chronic hepatitis C: results of a prospective single-centre study.
    Author: Berak H, Laskus T, Kołakowska-Rządzka A, Wasilewski M, Stańczak JJ, Bardadin K, Walewska-Zielecka B, Horban A.
    Journal: Adv Med Sci; 2014 Sep; 59(2):261-5. PubMed ID: 25117425.
    Abstract:
    PURPOSE: This prospective, randomized, single-centre study compared peginterferons alfa-2a and alfa-2b, combined with ribavirin, in treating patients infected with hepatitis C virus (HCV) genotype 1. MATERIAL/METHODS: Hundred-and-one patients received 48 weeks of open-label treatment with peginterferon alfa-2a (180 μg/week) and 111 patients received peginterferon alfa-2b (1.5 μg/kg/week). All patients received the same dose of ribavirin 1000/1200 mg/day, depending on weight. The primary efficacy endpoint was sustained virologic response (SVR), defined as undetectable HCV RNA (<50 IU/mL) 24 weeks after the end of treatment. RESULTS: Early virologic response (EVR), defined as at least 2 log₁₀ IU/mL reduction of viral load at 12 weeks, was more common in patients treated with peginterferon alfa-2a (88% vs. 74.8%; p=0.04). However, the difference in SVR was not statistically significant (49.5% vs. 44.1%; p=0.43). CONCLUSIONS: Peginterferon alfa-2a treated patients were also more likely to be HCV RNA negative at the end of treatment (67.3% vs. 57.7%), but this difference did not reach statistical significance. Multivariate logistic regression analysis found that SVR was associated with low fibrosis stage (F1-2 by Scheuer; p=0.001) and low serum HCV RNA level (<400,000 IU/L; p=0.023). While both forms of peginterferon showed similar efficacy as measured by SVR, use of peginterferon alfa-2b could lower the number of patients receiving unnecessary treatment beyond 12 weeks.
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