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Managing Side Effects of New Hepatitis C Protease Inhibitors

Adding the recently approved hepatitis C virus (HCV) protease inhibitors boceprevir (Victrelis) or telaprevir (Incivek) to pegylated interferon plus ribavirin can shorten the course of treatment and increase the likelihood of a cure, but can also lead to more adverse events. Fortunately, side effects are typically mild-to-moderate and usually can be managed without stopping therapy, according to a recent review.alt

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FDA Lifts Hold on Idenix HCV Polymerase Inhibitor IDX184

The U.S. Food and Drug Administration (FDA) last week gave the go-ahead for further development of Idenix Pharmaceuticals' hepatitis C virus (HCV) nucleotide polymerase inhibitor IDX184. The agency lifted a hold imposed after a few healthy volunteers who received a combination of IDX184 plus another experimental agent, IDX321, in an early clinical trial developed elevated liver enzymes; further analysis indicates that liver toxicity is likely attributable to the second drug.alt

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Achillion, Presidio, Idenix Announce HCV Drug Pipeline Developments

Three companies developing direct-acting antiviral agents (altDAAs) for hepatitis C virus (HCV) infection recently announced progress on new experimental drug candidates. 

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High Rate of Sustained Response with Interferon-Free Daclatasvir + Asunaprevir for Hepatitis C

A dual oral regimen of Bristol-Myers Squibb's hepatitis C virus (HCV) protease inhibitor asunaprevir (formerly BMS-650032) and HCV NS4A inhibitor daclatasvir (BMS-790052) cleared the virus in one-third of genotype 1 prior null responders to prior interferon-based therapy, and both of those with genotype 1b, according to data published in the January 19, 2012, New England Journal of Medicine.

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Pharmasset Halts Testing of HCV Polymerase Inhibitor PSI-938 Due to Liver Problems

Pharmasset announced in December that it would change the design of its ongoing QUANTUM trial to discontinue treatment with its hepatitis C virus (HCV) nucleotide polymerase inhibitor PSI-938, after routine safety monitoring revealed liver function abnormalities.alt

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