Press Release Details

PASADENA, Calif.--(BUSINESS WIRE)-- Arrowhead Pharmaceuticals Inc. (NASDAQ: ARWR) today announced that it will present preclinical data on ARO-AAT, a second generation investigational medicine for the treatment of alpha-1 liver disease that uses Arrowhead's TRiM^TM technology, at The Liver Meeting^® 2017, the Annual Meeting of the American Association for the Study of Liver Disease (AASLD) being held on October 20-24, 2017, in Washington, DC.

Poster Presentation:

Subcutaneous delivery of a RNA interference (RNAi) therapeutic candidate for alpha-1 antitrypsin deficiency (AATD)-related liver disease produces deep and prolonged knockdown of plasma AAT

• Publication Number: LB-21
• Session: Late-Breaking Poster Session
• Session Date and Time: October 23, 2017 from 8:00 AM to 5:30 PM
• Authors: Christine I. Wooddell, et al.

Additional details including presentation abstracts can be found on the AASLD website at http://www.aasld.org/. A copy of presentation materials may be accessed on the Events and Presentations page under the Investors section of the Arrowhead website after the presentation concludes.

About Arrowhead Pharmaceuticals

Arrowhead Pharmaceuticals develops medicines that treat intractable diseases by silencing the genes that cause them. Using a broad portfolio of RNA chemistries and efficient modes of delivery, Arrowhead therapies trigger the RNA interference mechanism to induce rapid, deep, and durable knockdown of target genes. RNA interference, or RNAi, is a mechanism present in living cells that inhibits the expression of a specific gene, thereby affecting the production of a specific protein. Arrowhead's RNAi-based therapeutics leverage this natural pathway of gene silencing.

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Safe Harbor Statement under the Private Securities Litigation Reform Act:

This news release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These statements are based upon our current expectations and speak only as of the date hereof. Our actual results may differ materially and adversely from those expressed in any forward-looking statements as a result of various factors and uncertainties, including the safety and efficacy of our product candidates, the duration and impact of regulatory delays in our clinical programs, our ability to finance our operations, the future success of our scientific studies, our ability to successfully develop drug candidates, the timing for starting and completing clinical trials, rapid technological change in our markets, and the enforcement of our intellectual property rights. Our most recent Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q discuss some of the important risk factors that may affect our business, results of operations and financial condition. We assume no obligation to update or revise forward-looking statements to reflect new events or circumstances.

Source: Arrowhead Pharmaceuticals, Inc.

View source version on businesswire.com: http://www.businesswire.com/news/home/20171010006091/en/

Arrowhead Pharmaceuticals, Inc.
Vince Anzalone, CFA
626-304-3400
ir@arrowheadpharma.com
or
Investors and Media:
LifeSci Advisors, LLC
Brian Ritchie
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www.lifesciadvisors.com

Source: Arrowhead Pharmaceuticals, Inc.

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