Arena Pharmaceuticals Presents Preclinical Data for Olorinab at International Association for the Study of Pain World Congress

SAN DIEGO, Sept. 17, 2018 /PRNewswire/ -- Arena Pharmaceuticals, Inc., Inc. (Nasdaq: ARNA) today announced that results from preclinical studies of its investigative drug candidate olorinab, a peripherally restricted, highly selective, full agonist of the cannabinoid receptor 2 (CB2) in development for the treatment of visceral pain associated with Crohn's disease, were presented at the International Association for the Study of Pain (IASP) World Congress in Boston, MA.

"We are pleased to present data supporting olorinab's antinociceptive effects in visceral sensory pathways," said Preston Klassen, MD, MHS, Executive Vice President, Research and Development and Chief Medical Officer of Arena. "Through its full-agonism and selectivity, we believe olorinab may provide a novel therapeutic approach for sustained relief of visceral pain without psychotropic effects, potentially providing a new treatment option without the risk for dependence or abuse. We are currently evaluating olorinab in a Phase 2 clinical trial in IBD-associated abdominal pain and expect the availability of topline data by the end of the third quarter."

Presentation Details
Poster Abstract Title: APD371, a Peripherally Restricted, Highly Selective, Full Agonist of the Cannabinoid Receptor 2 (CB2) Receptor, Reduces Colitis-Induced Visceral Hypersensitivity in Rats
Poster Number: PFR455
Presentation Date: Friday, September 14

About Arena Pharmaceuticals
Arena Pharmaceuticals is focused on delivering novel, transformational medicines with optimized pharmacology and pharmacokinetics to patients globally. Arena's proprietary pipeline includes multiple potentially first- or best-in-class programs with broad clinical utility. The most advanced investigational clinical programs are ralinepag (APD811), in a Phase 3 program for pulmonary arterial hypertension (PAH), and etrasimod (APD334), expected to commence a Phase 3 program for ulcerative colitis (UC) and a program in Crohn's disease (CD), and which has potential utility for a broad range of immune and inflammatory conditions. Arena is also evaluating olorinab (APD371) in a Phase 2 study for the treatment of visceral pain associated with Crohn's disease, as well as other drug candidates in earlier research and development stages.

In addition, Arena has several collaborations including Everest Medicines Limited (ralinepag and etrasimod in Greater China and select Asian countries), Axovant Sciences GmbH (nelotanserin - Phase 2), Boehringer Ingelheim International GmbH (undisclosed target - preclinical), Outpost Medicine, LLC (undisclosed target - preclinical), and Eisai Co., Ltd. and Eisai Inc. (BELVIQ® - marketed product).

Forward-Looking Statements
Certain statements in this press release are forward-looking statements that involve a number of risks and uncertainties. These forward-looking statements may be accompanied by words such as "believe," "may," "potentially," "expect," "focused on," "potential," or words of similar meaning, or they may be identified by the fact that they do not relate strictly to historical or current facts. Such forward-looking statements include, without limitation, statements about the following: the potential of olorinab, including with respect to its efficacy, side effects, and risks; the availability of topline Phase 2 data for olorinab; and Arena's focus, goals, strategy, proprietary pipeline and collaborations. For such statements, Arena claims the protection of the Private Securities Litigation Reform Act of 1995. Actual events or results may differ materially from Arena's expectations. Factors that could cause actual results to differ materially from the forward-looking statements include, but are not limited to, the following: we may need additional funds to advance all of our programs, and you and others may not agree with the manner we allocate our resources; risks related to developing and commercializing drugs; enrolling patients in our ongoing and intended clinical trials is competitive and challenging; clinical programs may not proceed at the time or in the manner expected or at all; the timing and outcome of research, development and regulatory review is uncertain, and our drug candidates may not advance in development or be approved for marketing; risks and uncertainties relating to cash and revenues that may be generated from product sales or other sources, including the impact of competition; Arena's revenues are based in part on estimates, judgment and accounting policies, and inaccuracies or disagreement on these subjects may result in changes to Arena's guidance or previously reported results; risks related to unexpected or unfavorable new data; nonclinical and clinical data is voluminous and detailed, and regulatory agencies may interpret or weigh the importance of data differently and reach different conclusions than Arena or others, request additional information, have additional recommendations or change their guidance or requirements before or after approval; results of clinical trials and other studies are subject to different interpretations and may not be predictive of future results; topline data may not accurately reflect the complete results of a particular study or trial; satisfactory resolution of litigation or other disagreements with others; government and third-party payor actions, including relating to reimbursement and pricing; risks related to relying on collaborative arrangements; the entry into or modification or termination of collaborative arrangements; and Arena's and third parties' intellectual property rights. Additional factors that could cause actual results to differ materially from those stated or implied by Arena's forward-looking statements are disclosed in Arena's filings with the Securities and Exchange Commission (SEC), including but not limited to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2018, which was filed with the SEC on August 7, 2018. These forward-looking statements represent Arena's judgment as of the time of this release. Arena disclaims any intent or obligation to update these forward-looking statements, other than as may be required under applicable law.

Corporate Contact:
Kevin R. Lind
Arena Pharmaceuticals, Inc.
Executive Vice President and
Chief Financial Officer

Media Contact:
Matt Middleman, M.D.
LifeSci Public Relations


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SOURCE Arena Pharmaceuticals, Inc.

Company Codes: NASDAQ-NMS:ARNA

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