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  • Title: Dose-dependent and genotype-independent sustained virological response of a 12 week pegylated interferon alpha-2b treatment for acute hepatitis C.
    Author: De Rosa FG, Bargiacchi O, Audagnotto S, Garazzino S, Cariti G, Raiteri R, Di Perri G.
    Journal: J Antimicrob Chemother; 2006 Feb; 57(2):360-3. PubMed ID: 16396921.
    Abstract:
    OBJECTIVES: The optimal regimen for acute hepatitis C (AHC) is considered to be a 24 week treatment with interferon (IFN) alpha-2b. A 24 week treatment with pegylated IFN (PEG-IFN) alpha-2b is also effective. This study was designed to assess response rates to a 12 week regimen of PEG-IFN alpha-2b. PATIENTS AND METHODS: Patients with AHC were treated with PEG-IFN alpha-2b for 12 weeks in an open, non-randomized, prospective cohort study. Diagnosis of AHC was made with positive serum HCV RNA and elevated alanine aminotransferase (ALT) levels with a documented seroconversion or a known risk factor in the preceding 6 months. Treatment was administered within a median of 31 days (range 0-116) of the ALT level peak at a dosage varying from 1.06 to 1.66 microg/kg/week. The primary end-point was a sustained virological response (SVR). RESULTS: Nineteen patients were treated, of whom 11 patients (57.9%) had HCV genotype 1. Fourteen patients were asymptomatic. An SVR was achieved in 74% of patients and the SVR rate was 100 and 83.3%, respectively, in genotype 1 and non-1 infected patients treated with a dosage>or=1.33 microg/kg, compared with 40 and 50%, respectively, in those who received a lower dosage. An SVR was significantly associated by multivariate analysis only with PEG-IFN dosage>or=1.33 microg/kg/week. No significant association was found with any viral genotype. CONCLUSIONS: The rate of SVR was independent of the HCV genotype and was significantly associated by multivariate analysis only with the higher PEG-IFN dosage. Early identification and treatment of AHC is likely to decrease the burden of chronic hepatitis, especially when caused by HCV genotype 1.
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