Abstract
Boceprevir is a hepatitis C virus (HCV) serine protease NS3 inhibitor that has recently been approved by the U.S. Food and Drug Administration, the European Medicines Agency and Health Canada for the treatment of chronic genotype 1 HCV infection. It has potent in vitro antiviral activity against HCV genotypes 1a and 1b and is primarily metabolized via the aldoketoreductase pathway with minor cytochrome P450 3A4 metabolism. Boceprevir is well tolerated with few drug-drug interactions which are easy to manage; no dose adjustment is required in patients with hepatic or renal impairment. Phase I trials of boceprevir demonstrated favorable pharmacokinetic, metabolic and safety profiles. Phase II and III trials of boceprevir confirmed the antiviral activity of the drug and its use at a dose of 800 mg three times daily. Clinical trials in treatment-naive and previously treated HCV-infected patients demonstrated a 26% and 45% (respectively) improvement in sustained viral response when boceprevir was added to standard pegylated interferon and ribavirin anti-HCV therapy. Boceprevir is the first-in-class of an exciting new phase of HCV treatment.
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