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Orexigen Announces Successful Interim Analysis of Contrave Light Study
Date:11/25/2013

SAN DIEGO, Nov. 25, 2013 /PRNewswire/ -- Orexigen Therapeutics, Inc. (Nasdaq: OREX) today announced successful results of the interim analysis of the Light Study. Based on these results, the Company will resubmit the Contrave® New Drug Application (NDA) to the United States Food and Drug Administration (FDA) in the next few weeks with potential approval by June 2014. 

"The interim analysis of the Light Study clearly achieved the goal set by the FDA," said Michael Narachi, CEO of Orexigen.  "The resubmission will contain an unprecedented amount of cardiovascular outcomes data for an obesity therapeutic, and we are confident these data will support a favorable benefit:risk assessment for Contrave."

The FDA previously agreed that if the interim analysis meets the specified criteria to exclude cardiovascular risk, Contrave could be approved. The pre-specified criteria for the interim analysis is to exclude a hazard ratio of 2.0, using the upper bound of the 95% confidence interval, for excess risk of major adverse cardiovascular events (MACE) in patients receiving Contrave as compared to placebo. In addition to meeting the pre-specified criteria for excluding cardiovascular risk, no new safety signals were observed.

"Takeda is excited about this major milestone for Contrave," said Doug Cole, President of Takeda Pharmaceuticals U.S.A., Inc., Orexigen's partner for Contrave in North America. "Takeda is pleased to partner with Orexigen to develop a therapeutic option that has the potential to help patients achieve meaningful and sustained weight loss over time."

Conference Call This Morning at 8:30 a.m. Eastern Time (5:30 a.m. Pacific Time) The Orexigen management team will host a teleconference and webcast to discuss the interim analysis results. The live call may be accessed by phone by calling (888) 895-5479 (domestic) or (847) 619-6250 (international), participant code 36202424. The webcast can be accessed live on the Investor Relations section of the Orexigen web site at www.orexigen.com and will be archived for 14 days following the call.

About the Light StudyThe Contrave Light Study is a double‐blind, placebo‐controlled cardiovascular outcomes trial that randomized approximately 8,900 patients.  The primary objective of the Light Study, which Orexigen is conducting under a Special Protocol Assessment with the FDA at approximately 260 clinical sites in the United States, is to rule out excess cardiovascular risk in overweight and obese patients receiving Contrave. 

By agreement with the FDA, the independent Data Monitoring Committee's summary report of the Light Study interim analysis will form the basis of the resubmission of the NDA, and the complete clinical study report (CSR) for the interim analysis, which would ordinarily form the basis for the NDA resubmission filing, will be supplied to the FDA during its review within 60 days of the NDA resubmission.

Following potential approval in June 2014, the Light Study will continue, blinded, until the trial is completed.

About Contrave
Contrave (naltrexone sustained release (SR)/bupropion SR) is an investigational medication being evaluated for weight loss. Prior to initiation of the Light Study, Contrave was studied in clinical trials enrolling more than 4,500 people. Contrave has been shown to help people lose weight and keep it off for up to one year. In previous clinical trials, 53 percent of study participants taking Contrave and 21 percent of those taking placebo lost five percent or more of their body weight over the 12 month trial duration. Many patients saw noticeable improvements in cholesterol levels, and blood sugar control, as well as smaller waistlines. Those who combined Contrave with diet and exercise experienced the most reduction in body weight. There is no guarantee that Contrave will make patients lose weight.

Contrave was generally well tolerated in earlier clinical trials. In the Contrave Phase 3 clinical development program, the most frequent adverse events on Contrave were nausea, constipation, headache, vomiting, dizziness, insomnia, dry mouth, and diarrhea. These were mostly mild to moderate in severity and did not last long.

Orexigen has licensed North American Contrave rights to Takeda Pharmaceuticals. Orexigen owns Contrave rights in Europe and throughout the rest of the world outside of North America and will seek a partner to commercialize Contrave in those territories. In October 2013, Orexigen submitted a Marketing Authorization Application (MAA) for Contrave to the European Medicines Agency (EMA).

About Orexigen Therapeutics
Orexigen Therapeutics, Inc. is a biopharmaceutical company focused on the treatment of obesity. The Company's lead product candidate is Contrave, which has completed Phase 3 clinical trials and for which a New Drug Application had been submitted and reviewed by the FDA. The Company has also reached agreement with the FDA on a Special Protocol Assessment (SPA) for the Light Study, the Contrave cardiovascular outcomes trial. The Company's other product candidate, Empatic, has completed Phase 2 clinical trials. Further information about the Company can be found at www.orexigen.com.

Forward‐Looking Statements 
Orexigen cautions you that statements included in this press release that are not a description of historical facts are forward‐looking statements. Words such as "believes," "anticipates," "plans," "expects," "indicates," "will," "should," "intends," "potential," "suggests," "assuming," "designed" and similar expressions are intended to identify forward‐looking statements. These statements are based on the Company's current beliefs and expectations. These forward‐looking statements include statements regarding: the timing of resubmission and potential approval of the NDA for Contrave; the benefit risk profile for Contrave; Orexigen's plans to seek a commercialization partner in territories outside of North America; and the timing of the submission of the CSR for the interim analysis. The inclusion of forward‐looking statements should not be regarded as a representation by Orexigen that any of its plans will be achieved. Actual results may differ materially from those expressed or implied in this release due to the risk and uncertainties inherent in the Orexigen business, including, without limitation: delays in the resubmission of the Contrave NDA; the possibility that the FDA determines not to initiate review of the Contrave NDA until it has received the CSR for the interim analysis; the SPA is not binding on the FDA if public health concerns unrecognized at the time the SPA agreement was entered into become evident, other new scientific concerns regarding product safety or efficacy arise, or if Orexigen fails to comply with the agreed upon trial protocol; the potential for the FDA to not approve Contrave even after meeting the prespecified threshold and resubmitting the NDA; the possibility that public disclosure of the results of the interim analysis would later be deemed to jeopardize the integrity of the Light Study potentially resulting in the requirement to conduct additional, costly studies; additional analysis of the interim results or new data from the continuing Light Study, including safety-related data, may produce negative or inconclusive results, or may be inconsistent with the conclusion that the interim analysis was successful; the potential that the interim analysis may not be predictive of future results in the Light Study; the potential for early termination of Orexigen's North American collaboration agreement with Takeda Pharmaceutical Company Limited; the results from the interim analysis may not sufficient to satisfy or respond to the Day 120 List of Questions from the EMA or any other data requirements of the EMA in connection with the review of the MAA; even if the NDA is approved by the FDA, the final results of the Light Study may not support continued approval of Contrave; the therapeutic and commercial value of Contrave; Orexigen's ability to maintain sufficient capital to fund its operations through potential approval of Contrave in 2014; and other risks described in Orexigen's filings with the Securities and Exchange Commission. You are cautioned not to place undue reliance on these forward‐looking statements, which speak only as of the date hereof, and Orexigen undertakes no obligation to revise or update this news release to reflect events or circumstances after the date hereof. Further information regarding these and other risks is included under the heading "Risk Factors" in Orexigen's Quarterly Report on Form 10‐Q filed with the Securities and Exchange Commission November 12, 2013 and its other reports, which are available from the SEC's website (www.sec.gov) and on Orexigen's website (www.orexigen.com) under the heading "Investor Relations." All forward‐looking statements are qualified in their entirety by this cautionary statement. This caution is made under the safe harbor provisions of Section 21E of the Private Securities Litigation Reform Act of 1995.Orexigen Contact:

Media Contact: McDavid Stilwell

Denise PowellVP, Corporate Communications and Business Development

BrewLife(858) 875-8629

(510) 703-9491


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SOURCE Orexigen Therapeutics, Inc.
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