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SAN DIEGO, June 3, 2011 /PRNewswire/ -- Orexigen® Therapeutics, Inc. (Nasdaq: OREX) announced today that it recently met with the Food and Drug Administration (FDA) regarding the New Drug Application for Contrave® (naltrexone HCl/bupropion HCl) extended-release tablets for the treatment of obesity, including weight loss and maintenance of weight loss.  Orexigen sought the meeting to gain clarity on the approval deficiency stated in the Complete Response letter the Company received on January 31, 2011.  The Complete Response letter requested that the Company conduct a randomized, double-blind, placebo-controlled trial of sufficient size and duration to demonstrate that the risk of major adverse cardiovascular events in overweight and obese subjects treated with Contrave does not adversely affect the drug's benefit-risk profile.  

Orexigen submitted a specific proposal to address the theoretical cardiovascular risk cited in the approval deficiency and also explored approval for a narrowed indication in patients with lower cardiovascular risk until data from the proposed outcomes trial could be reviewed for label expansion.  The Division of Metabolic and Endocrinologic Products (DMEP) advised Orexigen that the proposed cardiovascular outcomes trial would not adequately address the approval deficiency and instead, requested a pre-approval cardiovascular outcomes trial that Orexigen believes is unprecedented and would generate significantly more information than is necessary or feasible.  Additionally, DMEP stated that it would not consider approving Contrave for a narrowed population without first reviewing data from a cardiovascular outcomes trial.  Finally, DMEP said that it intends to hold a general advisory committee early next year to discuss cardiovascular assessment for obesity therapeutics, and that any agreement reached on the desi

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