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Experimental HCV Drugs

Janssen Acquires GSK NS5A Inhibitor Candidate for Hepatitis C

Janssen Pharmaceuticalsannounced this week that it has purchased a Phase 2 hepatitis C virus (HCV) NS5A inhibitor candidate, GSK2336805,from GlaxoSmithKline. Janssen is also developing the promising HCV protease inhibitor simeprevir (formerly TMC435), which is currently awaiting approval in the U.S. and Europe.

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IDWeek 2013: Daclatasvir Is Effective Against HCV with Interferon or in All-oral Regimen

A short 12- or 16-week triple regimen of daclatasvir plus pegylated interferon/ribavirin cured more people than a 24-week course of pegylated interferon/ribavirin alone, while an interferon-free regimen containing daclatasvir, asunaprevir, and BMS-791325 produced sustained response rates of around 90%, researchers reported at the Second IDWeek conference last week in San Francisco.

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Simeprevir for Hepatitis C Approved in Japan, Cobicistat Gets Nod in Europe

The HCV protease inhibitor simeprevir (formerly TMC435) has been granted approval in Japan for the treatment of people with genotype 1 chronic hepatitis C, Medivir announced this week. In related news, Gilead Sciences said their new pharmacoenhancer cobicistat -- brand name Tybost -- has been approved as a stand-alone drug in the European Union for use as a booster for certain HIV protease inhibitors.

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Adding Danoprevir Boosts Response to Interferon-based Therapy for Hepatitis C

Combining the second-generation hepatitis C virus (HCV) protease inhibitor danoprevir with pegylated interferon and ribavirin raised the sustained virological response rate to 85% for genotype 1 patients, without much increase in toxicity, according to a report in the October 2013 issue of Gastroenterology.

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Phase 2 Study Looks at Faldaprevir + Deleobuvir + PPI-668 for Genotype 1a Hepatitis C

All participants are now enrolled in a Phase 2a clinical trial testing an interferon-free oral regimen containing Boehringer Ingelheim's faldaprevir (BI 201335) and deleobuvir (BI 207127) plus Presidio's NS5A inhibitor PPI-668, with or without ribavirin, according to a company announcement. 

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