Lack of clinical evidence for involvement of hepatitis C virus interferon-alpha sensitivity-determining region variability in RNA-dependent protein kinase-mediated cellular antiviral responses.

Abstract excerpt

The hepatitis C virus (HCV) interferon-alpha (IFN-alpha) sensitivity-determining region (ISDR) has been shown to suppress double-stranded RNA-dependent protein kinase (PKR) activity in vitro in a yeast PKR expression system. Since variability of ISDR was shown to correlate with nonresponsiveness to IFN-alpha therapy in chronically HCV-infected patients, it has been suggested that prototype ISDR might be a viral...

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