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  • Title: Telaprevir versus boceprevir in chronic hepatitis C: a meta-analysis of data from phase II and III trials.
    Author: Sitole M, Silva M, Spooner L, Comee MK, Malloy M.
    Journal: Clin Ther; 2013 Feb; 35(2):190-7. PubMed ID: 23369368.
    Abstract:
    BACKGROUND: Telaprevir and boceprevir are protease inhibitors now added to therapy for patients with chronic hepatitis C virus (HCV) genotype 1 infection who either are treatment naive or have a history of relapse or recurrence following a previous course of treatment with pegylated interferon + ribavirin (Peg-IFN + RBV). Because these agents are fairly new to the market, providers may have limited experience with them in the management of chronic HCV. OBJECTIVE: This meta-analysis compared 24- and 48-week sustained viral responses (SVR) and drug-related adverse events (AEs) between telaprevir and boceprevir triple-therapy regimens in the treatment of chronic HCV infection. METHODS: MEDLINE, EMBASE, and Cochrane databases were searched for articles published from January 1995 to October 2012 on randomized controlled trials that reported SVR at ≥24 weeks in patients with HCV receiving triple-therapy regimens that included telaprevir or boceprevir or placebo + pegylated interferon + ribavirin (Peg-IFN + RBV). Pooled odds ratios (ORs) were calculated and used to compare SVR at 24 and 48 weeks. Secondary end points included common drug-related AEs and treatment discontinuations. RESULTS: Eight studies were included in this meta-analysis (N = 4144 treatment-naive and treatment-experienced patients). With telaprevir, the ORs (95% CI) for SVR at 24 weeks in treatment-naive and treatment-experienced patients were 3.31 (2.27-4.82; P < 0.0001) and 4.21 (1.83-9.72; P = 0.001), respectively. Telaprevir triple therapy did not result in more drug-related discontinuations but did cause additional rash, pruritis, and anemia. With boceprevir, the ORs (95% CI) were improved in both treatment-naive and treatment experienced patients (3.55 [2.66-4.56; P < 0.0001] and 7.34 [3.92-13.9; P < 0.0001]), but with more treatment-related anemia and dysgeusia. CONCLUSIONS: Based on the findings from this meta-analysis, telaprevir or boceprevir combined with Peg-IFN + RBV had favorable short-term data on SVR while resulting in more drug-related AEs. Extended follow-up is required to determine whether these agents offer a reduction in the risk for chronic hepatitis C genotype 1-related mortality and/or hospitalization.
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