Arrowhead to Present Late-Breaking Clinical Data on ARO-AAT and ARO-HBV at AASLD Liver Meeting® 2018
Oct 11, 2018 at 12:05 PM EDT
PASADENA, Calif. --(BUSINESS WIRE)--Oct. 11, 2018-- Arrowhead Pharmaceuticals Inc. (NASDAQ: ARWR) will make two late-breaking poster presentations at The Liver Meeting® 2018, the Annual Meeting of the American Association for the Study of Liver Disease (AASLD) being held on November 9-13, 2018 , in
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PASADENA, Calif.--(BUSINESS WIRE)--Oct. 11, 2018-- Arrowhead Pharmaceuticals Inc. (NASDAQ: ARWR) will make two late-breaking poster presentations at The Liver Meeting® 2018, the Annual Meeting of the American Association for the Study of Liver Disease (AASLD) being held on November 9-13, 2018, in San Francisco. The abstracts became available today on the Online Planner on the AASLD website.
ARO-HBV Presentation Details
First Results with RNA interference (RNAi) in Chronic Hepatitis B (CHB) Using ARO-HBV
Publication Number: LB-25
Session: Late-Breaking Poster Session
Session Date and Time: November 12, 2018 from 8:00 AM to 5:30 PM PT
Location: Moscone Center North/South Building, Hall C
Authors: Dr. Edward J. Gane, et al.
Abstract
Background: RNAi has shown promise as a potential component of finite therapy for patients with chronic hepatitis B (CHB) based on its ability to silence HBV mRNA thereby reducing all viral products, most notably HBsAg. Clinical utility has been limited by IV delivery and/or safety concerns. ARO-HBV is composed of two siRNAs, each directly conjugated to N-acetyl galactosamine to drive hepatocyte delivery. Administered subcutaneously (SQ), it is designed to silence all mRNA from cccDNA and host integrated viral DNA, without need for additional delivery elements.
Methods: Normal healthy volunteer (NHV) cohorts (4 active, 2 placebo) received single SQ doses of 35, 100, 200, 300 or 400 mg. CHB cohorts 2b-5b (n=4, HBeAg pos or neg, NUC treated or not on NUCs) received monthly doses x 3 of 100, 200, 300 or 400 mg. Cohorts of HBeAg pos, NUC naïve and experienced CHB (cohorts 8, 9 respectively, n=4 each) are receiving 300 mg monthly x 3. NUC untreated receive NUCs from day 1. Results reported are from 28 days after 3rd dose (day 85) when available or most recent.
Results: No serious AEs or dropouts in NHVs or CHBs have been reported. AEs were mild and similar in occurrence for active or placebo. Injection site AEs (all mild) occur in ~11% of injections. For cohorts 2b-5b (n=16 active), 14 were BLQ for HBV DNA and 13 were HBeAg negative at baseline; 14 on chronic NUCs. In CHB, mean (max) log10 reductions in HBsAg were: 100 mg 2.0 (4.0) through Day 85, 200 mg 1.6 (2.2) through Day 85, 300 mg 1.5 (2.2) through Day 85 and 400 mg 1.7 (3.0) through day 71 in cohorts 2b-5b and 1.5 (3.0) in cohort 8 through day 43 and 1.0 (1.3) through day 15 in cohort 9. All patients reaching day 85 have > 1.0 log10 reduction in HBsAg with additional HBsAg decreases observed after the second and third doses. Of these 24 CHB, 21 had HBsAg >100 IU/ml at baseline and currently 17 have achieved HBsAg <100, 7 ≤10, 4 ≤1. In CHB with other viral parameters above LLOQ at baseline, all have improved following ARO-HBV, including reduction to BLQ in: HBV DNA (2 of 7), HBV RNA (8 of 14), HBeAg (0 of 11) and HBcrAg (3 of 15).
Conclusions: ARO-HBV has been well tolerated in NHVs and CHB. ~11% of SQ injections were associated with mild injection site AEs. Monthly RNAi with ARO-HBV effectively reduces all measurable viral products, including HBsAg. ARO-HBV has characteristics desirable for RNAi to become a cornerstone therapy in finite regimens aimed at HBsAg clearance in CHB. 作者: StephenW 时间: 2018-10-12 03:30
In CHB, mean (max) log10 reductions in HBsAg were: 100 mg 2.0 (4.0) through Day 85, 200 mg 1.6 (2.2) through Day 85, 300 mg 1.5 (2.2) through Day 85 and 400 mg 1.7 (3.0) through day 71 in cohorts 2b-5b and 1.5 (3.0) in cohort 8 through day 43 and 1.0 (1.3) through day 15 in cohort 9. All patients reaching day 85 have > 1.0 log10 reduction in HBsAg with additional HBsAg decreases observed after the second and third doses. Of these 24 CHB, 21 had HBsAg >100 IU/ml at baseline and currently 17 have achieved HBsAg <100, 7 ≤10, 4 ≤1. 作者: 齐欢畅 时间: 2018-10-12 19:49