Arrowhead Pharmaceuticals to Participate in Upcoming April 2022 Conferences

Arrowhead Pharmaceuticals Inc. (NASDAQ: ARWR) today announced that it is scheduled to participate in the following upcoming events:

31^st Conference of the Asian Pacific Association for the Study of the Liver (APASL 2022) – March 30-April 3, 2022

Title: Pharmacokinetics and Safety of JNJ-73763989, an RNA Interference Therapy for Hepatitis B Virus, in Moderately Hepatically Impaired Participants

Authors: Thomas N. Kakuda, et al.

Title: Pharmacokinetics, Safety, and Tolerability of the siRNA JNJ-73763989 in Healthy Chinese Adult Participants

Authors: Haiyan Li, et al.

Title: Short interfering RNA JNJ-3989 combination therapy in chronic hepatitis B shows potent reduction of all viral markers but no correlate was identified for HBsAg reduction and baseline factors

Authors: Edward Gane, et al.

American Association for Cancer Research Annual Meeting 2022 (AACR) – April 8-13, 2022

Title: Targeting HIF2a with siRNA: From preclinical models to the clinic

Authors: Yuanqing Ma, et al.

DIA/FDA's Oligonucleotide-based Therapeutics Conference (Oligo22) – April 25-27, 2022

Title: Short Interfering RNA JNJ-3989 Combination Therapy

Presenter: Michael Biermer, Senior Director, Clinical Development, Janssen Pharmaceuticals

Title: ARO-HIF2 Evaluated in Clear Cell Renal Cell Carcinoma Ph1b Clinical Trial

Presenter: James Hamilton, Senior Vice President, Discovery and Translational Medicine, Arrowhead Pharmaceuticals

A copy of the presentation materials may be accessed on the Events and Presentations page under the Investors section of the Arrowhead website.

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.

For more information, please visit www.arrowheadpharma.com, or follow us on Twitter @ArrowheadPharma. To be added to the Company's email list and receive news directly, please visit http://ir.arrowheadpharma.com/email-alerts.

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. Any statements contained in this release except for historical information may be deemed to be forward-looking statements. Without limiting the generality of the foregoing, words such as “may,” “will,” “expect,” “believe,” “anticipate,” “hope,” “intend,” “plan,” “project,” “could,” “estimate,” or “continue” are intended to identify such forward-looking statements. In addition, any statements that refer to projections of our future financial performance, trends in our business, expectations for our product pipeline or product candidates, including anticipated regulatory submissions and clinical program results, prospects or benefits of our collaborations with other companies, or other characterizations of future events or circumstances are forward-looking statements. 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 numerous factors and uncertainties, including the impact of the ongoing COVID-19 pandemic on our business, the safety and efficacy of our product candidates, decisions of regulatory authorities and the timing thereof, the duration and impact of regulatory delays in our clinical programs, our ability to finance our operations, the likelihood and timing of the receipt of future milestone and licensing fees, the future success of our scientific studies, our ability to successfully develop and commercialize drug candidates, the timing for starting and completing clinical trials, rapid technological change in our markets, the enforcement of our intellectual property rights, and the other risks and uncertainties described in our most recent Annual Report on Form 10-K, subsequent Quarterly Reports on Form 10-Q and other documents filed with the Securities and Exchange Commission from time to time. We assume no obligation to update or revise forward-looking statements to reflect new events or circumstances.

Source: Arrowhead Pharmaceuticals, Inc.

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