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- W1995996854 abstract "BackgroundStandard treatment of chronic hepatitis C with pegylated interferon and ribavirin is associated with suboptimal virological response rates and substantial side effects. This study describes the in vitro and in vivo development of JTK- 652, a novel pyrrolopyridazin-derived HCV infection inhibitor. MethodsJTK-652 was evaluated in multiple cell lines using an in vitro HCV infection model consisting of HCV pseudotype vesicular stomatitis virus bearing HCV E1/E2 envelope proteins. Safety, tolerability, pharmacokinetics and efficacy of JTK-652 were tested in a randomized double- blind and placebo-controlled study in healthy male volunteers (n=36) and chronic hepatitis C patients. A total of 10 HCV genotype-1-infected patients (treatment-naive [n=2] and treatment-experienced [n=8]) with HCV RNA>1x105 IU/ml received an oral dose of 100 mg JTK-652 three times daily or placebo (8:2 ratio) for 4 weeks. ResultsJTK-652 showed potent inhibitory activity against HCV genotype 1a and 1b pseudotype viruses bearing HCV E1/E2 envelope proteins in HepG2 cells and in human primary hepatocytes. No significant clinical laboratory, vital sign, ECG or physical examination abnormalities were observed during the Phase I trial. JTK-652 was found to be well tolerated. No significant changes in HCV RNA levels compared with baseline were observed at the end of treatment. ConclusionsAlthough results from the preclinical studies indicated that JTK-652 has well-established antiviral properties and a Phase I clinical trial has showed that JTK-652 was safe and well tolerated at a 100 mg three times daily dose level, plasma HCV RNA levels in chronically HCV- infected patients did not decrease during 28 days of dosing at a 100 mg three times daily dose level." @default.
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- W1995996854 date "2010-01-01" @default.
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- W1995996854 title "Safety and antiviral activity of JTK-652: a novel HCV infection inhibitor" @default.
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- W1995996854 doi "https://doi.org/10.3851/imp1606" @default.
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