Arrowhead Research Corporation (ARWR) Presents Data Suggesting ARC-520 Induces Therapeutic Flare in Chronic Hepatitis B
11/4/2013 10:14:22 AM
PASADENA, Calif.--(BUSINESS WIRE)--Arrowhead Research Corporation (NASDAQ:ARWR), a biopharmaceutical company developing targeted RNAi therapeutics, today announced that it presented new data on ARC-520, its clinical candidate for the treatment of chronic hepatitis B virus, at the 2013 AASLD Annual Meeting. The data demonstrate that intravenous administration of two doses (2 mg/kg, 3 mg/kg) of ARC-520 in a chimpanzee chronically infected with HBV, resulted in substantial and sustained reductions in HBV DNA, HBeAg, and HBsAg, which did not return to baseline until study day 43, 43, and 71 respectively. In addition, an increase in serum alanine transaminase (ALT) occurred 4 weeks after the last dose, coincident with the nadir of circulating HBsAg. This is suggestive of a therapeutic immunological flare, which is thought to be part of a cascade that under chronic therapy may lead to HBsAg seroconversion and functional cure. Robert E. Lanford, Ph.D., of the Texas Biomedical Research Institute where the study was conducted, presented these data and the poster was selected as a Presidential Poster of Distinction indicating that it was in the top 10% of all abstracts selected for poster presentation.
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