BioCryst (BCRX) Reports Encouraging Data from BCX5191 in HCV
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BioCryst Pharmaceuticals, Inc. (Nasdaq: BCRX) announced favorable preclinical results for BCX5191, a novel adenine nucleoside analog targeting viral RNA polymerase for the potential treatment of hepatitis C.
BioCryst has successfully completed in vitro and in vivo studies in which BCX5191 exhibited potent and selective pan-genotypic antiviral activity against the hepatitis C polymerase enzyme. BCX5191 showed no inhibition of human RNA polymerase and no evidence of toxicity from standard in vitro screens.
Human liver cells rapidly and efficiently convert BCX5191 into its active triphosphate form. BCX5191 does not require prodrug technology to achieve bioavailability. BCX5191 inhibits the viral RNA polymerase enzyme across genotypes 1-4 at sub-micromolar concentrations (0.05-0.36 µM) and is active in replicon cell assays for genotypes 1a and 1b.
BioCryst has successfully completed in vitro and in vivo studies in which BCX5191 exhibited potent and selective pan-genotypic antiviral activity against the hepatitis C polymerase enzyme. BCX5191 showed no inhibition of human RNA polymerase and no evidence of toxicity from standard in vitro screens.
Human liver cells rapidly and efficiently convert BCX5191 into its active triphosphate form. BCX5191 does not require prodrug technology to achieve bioavailability. BCX5191 inhibits the viral RNA polymerase enzyme across genotypes 1-4 at sub-micromolar concentrations (0.05-0.36 µM) and is active in replicon cell assays for genotypes 1a and 1b.
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