Journal
LIVER INTERNATIONAL
Volume 32, Issue -, Pages 54-60Publisher
WILEY
DOI: 10.1111/j.1478-3231.2011.02718.x
Keywords
direct acting antivirals; protease inhibitors; resistance; sustained virological response
Categories
Funding
- Conatus
- Genentech/Roche
- Human Genome Sciences
- Romark
- Abbott
- Achillion
- Anadys
- Gilead
- Globeimmune
- Zymogenetics
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Boceprevir and telaprevir are the first two protease inhibitors available for the treatment of patients infected with hepatitis C virus (HCV) genotype 1. A sustained virological response (SVR) of 7080% is observed when either of these protease inhibitors is utilized with pegylated interferon (PEG-IFN) and ribavirin (RBV) in treatment naive patients. Both agents are also highly effective in patients who failed to achieve a SVR during previous treatment with PEG-IFN/RBV. A rapid virological response (RVR) is observed in 5660% of treatment naive patients. Patients who achieve a RVR can be treated with a shorter course of therapy (2428 similar to weeks) and still achieve a SVR rate of 90% or higher. Patients who do not achieve a RVR, those with cirrhosis and certain prior non-responders should be treated for 48 similar to weeks. Although the SVR rates observed with boceprevir and telaprevir are quite similar both globally and within sub-populations, the treatment algorithms for the two agents are unique. The decision of which protease inhibitor to use should assess several factors including the treatment scheme, duration of therapy, adverse event profile, cost and the likelihood of achieving a RVR. The latter is highly dependent upon IFN sensitivity and the IL28B genotype.
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