JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Early Viral Response Predicts the Efficacy of Antiviral Triple Therapy with Simeprevir, Peg-Interferon and Ribavirin in Patients Infected with Hepatitis C Virus Genotype 1.

Digestive Diseases 2015 October
OBJECTIVES: Triple therapy using peg-interferon, ribavirin and simeprevir (PEG-IFN/RBV/SMV) has reportedly resulted in high-sustained virological response (SVR) rates in patients with chronic hepatitis C (CHC), especially in naïve cases and relapsers to prior PEG-IFN/RBV therapy. Here, we retrospectively analyzed the antiviral response associated with a triple regimen, in the context of early reduction of viral load during treatment.

METHODS: Forty-six CHC patients with HCV genotype 1b were treated with PEG-IFN/RBV/SMV triple therapy: 20 were naïve cases, 12 were relapsers and 14 were non-responders to prior PEG-IFN/RBV therapy. We evaluated rapid virological response (RVR), complete early virological response (EVR), viral clearance at the end of the treatment (EOT) and at 12 weeks after the EOT (SVR12). In addition, we quantified the serum HCV-RNA on the 1st day and the 7th day after initiating treatment.

RESULTS: Multivariate analysis revealed that response to prior treatment was identified as an independent factor for achieving SVR12 after triple therapy (p = 0.0005). The achievement of serum HCV-RNA <2 log(10) IU/ml on day 7, RVR, EVR and EOT were associated with SVR12 (p = 0.0050, p = 0.0002, p = 0.0009 and p = 0.0002, respectively).

CONCLUSIONS: Rapid decline of HCV is a predictive factor for the achievement of SVR12, even in antiviral triple therapy with PEG-IFN/RBV/SMV. An extended treatment period should be applied for patients who show detectable serum HCV-RNA at week 4.

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