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Experimental HCV Drugs

EASL 2011: First Sustained Response Data for HCV Polymerase Inhibitor Mericitabine

76% of treatment-naive genotype 1 or 4 hepatitis C patients achieved 12-week sustained response to mericitabine (formerly RG7128) plus pegylated interferon/ribavirin, according to a report at EASL 2011. alt

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EASL 2011: Polymerase Inhibitor PSI-7977 Works with Interferon or Companion Drug

Almost all treatment-naive hepatitis C patients treated with Pharmasset's candidate PSI-7977 plus pegylated interferon/ribavirin experienced 12-week sustained response, and more than 90% treated with a PSI-7977 + PSI-938 all-oral combo had undetectable HCV at 14 days, researchers reported at EASL. alt

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HCV Polymerase Inhibitor INX-189 Gets FDA Fast-Track Status, TMC649128 Enters Phase 1a Trial

The development of direct-acting antiviral agents active against hepatitis C virus (HCV) continues at a rapid pace. Two pharmaceutical companies this month announced progress in the development of investigational HCV polymerase inhibitors. Inhibitex said that it's candidate INX-189 has received "Fast Track" designation from the U.S. Food and Drug Administration (FDA), which allows for accelerated review and approval. Sweden's Medivir announced the start of the first human trial of its drug, TMC649128, in healthy volunteers.

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CROI 2011: HCV Protease Inhibitor Boceprevir Improves Response for Treatment-Naive and Non-responders

Merck's investigational hepatitis C virus (HCV) protease inhibitor boceprevir improved sustained response rates when combined with pegylated interferon plus ribavirin in both previously untreated patients and those who were non-responders or relapsers after prior therapy, according to 2 Phase 3 studies presented at the 18th Conference on Retroviruses and Opportunistic Infections (CROI 2011) this month in Boston. alt

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Anadys Starts Phase 2b Study of HCV Polymerase Inhibitor ANA598

Anadys Pharmaceuticals announced this week that it has begun treating the first participants in a Phase 2b clinical trial of its investigational hepatitis C virus (HCV) polymerase inhibitor ANA598. The new drug will be tested in combination with pegylated interferon plus ribavirin in both previously untreated patients and people who did not achieve sustained response to prior therapy.

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