Orexigen Therapeutics, Inc. Announces Contrave® (naltrexone HCI And Bupropion HCI Extended Release) Data Presentations At The ObesityWeek Meeting In Boston

LA JOLLA, Calif., Oct. 31, 2014 /PRNewswire/ -- Orexigen Therapeutics (NASDAQ: OREX) today announced three Contrave® (naltrexone HCI and bupropion HCI) and two disease awareness abstracts have been accepted for poster presentations at the upcoming ObesityWeek meeting. This meeting will be held November 2-7, 2014 in Boston at the Boston Convention and Exposition Center.

Details on the presentation times are as follows:

About Contrave

Contrave is a combination of naltrexone, an opioid antagonist, and bupropion, a relatively weak inhibitor of the neuronal reuptake of dopamine and norepinephrine. While the exact neurochemical effects of Contrave leading to weight loss are not fully understood, nonclinical studies suggest that naltrexone and bupropion have effects on two separate areas of the brain involved in the regulation of food intake: the hypothalamus (appetite regulatory center) and the mesolimbic dopamine circuit (reward system). Contrave received approval from the U.S. Food and Drug Administration (FDA) as an adjunct to a reduced hyphen calorie diet and increased physical activity for chronic weight management in adults with an initial body mass index (BMI) of 30 kg/m² or greater (obese), or 27 kg/m² or greater (overweight) in the presence of at least one weight-related comorbid condition in September 2014.

Important Safety Information
WARNING: SUICIDAL THOUGHTS AND BEHAVIORS; AND NEUROPSYCHIATRIC REACTIONS

SUICIDALITY AND ANTIDEPRESSANT DRUGS
CONTRAVE is not approved for use in the treatment of major depressive disorder or other psychiatric disorders. CONTRAVE contains bupropion, the same active ingredient as some other antidepressant medications (including, but not limited to, WELLBUTRIN, WELLBUTRIN SR, WELLBUTRIN XL and APLENZIN). Antidepressants increased the risk of suicidal thoughts and behavior in children, adolescents, and young adults in short-term trials. These trials did not show an increase in the risk of suicidal thoughts and behavior with antidepressant use in subjects over age 24; there was a reduction in risk with antidepressant use in subjects aged 65 and older. In patients of all ages who are started on CONTRAVE, monitor closely for worsening, and for the emergence of suicidal thoughts and behaviors. Advise families and caregivers of the need for close observation and communication with the prescriber. CONTRAVE is not approved for use in pediatric patients.

NEUROPSYCHIATRIC REACTIONS IN PATIENTS TAKING BUPROPION FOR SMOKING CESSATION
Serious neuropsychiatric reactions have occurred in patients taking bupropion for smoking cessation. The majority of these reactions occurred during bupropion treatment, but some occurred in the context of discontinuing treatment. In many cases, a causal relationship to bupropion treatment is not certain, because depressed mood may be a symptom of nicotine withdrawal. However, some of the cases occurred in patients taking bupropion who continued to smoke. Although CONTRAVE is not approved for smoking cessation, observe all patients for neuropsychiatric reactions. Instruct the patient to contact a healthcare provider if such reactions occur.

Contraindications: CONTRAVE is contraindicated in patients with uncontrolled hypertension, seizure disorder, or current or prior diagnosis of anorexia nervosa or bulimia; in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs; with use of other bupropion-containing products; for use with chronic opioids or opiate agonists (eg, methadone) or partial agonists (eg, buprenorphine) or acute opiate withdrawal; during/within 14 days following treatment with monoamine oxidase inhibitors (MAOIs); in patients with known allergy to any other component of CONTRAVEanaphylactoid/anaphylactic reactions and Stevens-Johnson syndrome have been reported; in pregnancy.

Warnings and Precautions
Suicidal Behavior and Ideation: All patients being treated with antidepressants for any indication should be monitored appropriately and observed closely for clinical worsening, suicidality, and unusual changes in behavior, especially during the initial few months of a course of drug therapy or at times of dose changes, either increases or decreases. Consider changing the therapeutic regimen or discontinuing in patients whose depression is persistently worse, or who are experiencing emergent suicidality or symptoms of anxiety, agitation, panic attacks, insomnia, irritability, hostility, aggressiveness, impulsivity, akathisia (psychomotor restlessness), hypomania, or mania, especially if these symptoms are severe, abrupt in onset, or were not part of the patient's presenting symptoms. Alert families and caregivers of patients being treated with antidepressants about the need to monitor patients for the emergence of above mentioned symptoms, as well as the emergence of suicidality, daily and to report such symptoms immediately. Prescriptions for CONTRAVE should be written for the smallest quantity of tablets consistent with good patient management in order to reduce the risk of overdose.

Neuropsychiatric Symptoms and Suicide Risk in Smoking Cessation Treatment: CONTRAVE is not approved for smoking cessation treatment, but serious neuropsychiatric symptoms have been reported in patients taking bupropion for smoking cessation, including changes in mood (including depression and mania), psychosis, hallucinations, paranoia, delusions, homicidal ideation, hostility, agitation, aggression, anxiety and panic, as well as suicidal ideation, suicide attempt, and completed suicide. Observe patients for the occurrence of neuropsychiatric reactions. Instruct patients to contact a healthcare professional if such reactions occur.

Seizures: CONTRAVE can cause seizures. The risk of seizure is dose-related. Discontinue treatment and do not restart CONTRAVE in patients who experience a seizure. Use caution and consider the risk when prescribing CONTRAVE to patients with predisposing factors, clinical situations, and concomitant medications that may lower seizure threshold. Risk of seizure may be minimized by adhering to the recommended dosing schedule and avoiding co-administration with a high-fat meal.

Patients Receiving Opioid Analgesics: CONTRAVE should not be administered to patients receiving chronic opioids. Patients may be vulnerable to opioid overdose and/or precipitated opioid withdrawal.

Increase in Blood Pressure (BP) and Heart Rate (HR): CONTRAVE can cause an increase in systolic BP, diastolic BP, and/or resting HR. Monitor BP and HR especially in patients with cardiac or cerebrovascular disease and/or with controlled hypertension.

Allergic Reactions: Anaphylactoid/anaphylactic reactions and symptoms suggestive of delayed hypersensitivity have been reported in clinical trials with bupropion, as well as rare spontaneous reports of erythema multiforme, Stevens-Johnson syndrome, and anaphylactic shock.

Hepatotoxicity: Cases of hepatitis, clinically significant liver dysfunction, and transient asymptomatic hepatic transaminase elevations have been observed with naltrexone exposure. Use of CONTRAVE should be discontinued in the event of symptoms/signs of acute hepatitis.

Activation of Mania: Prior to initiating CONTRAVE, screen patients for history of bipolar disorder and the presence of risk factors for bipolar disorder (eg, family history of bipolar disorder, suicide, or depression).

Angle-Closure Glaucoma: The pupillary dilation that occurs following use of many antidepressant drugs, including bupropion, a component of CONTRAVE, may trigger an angle-closure attack in a patient with anatomically narrow angles who does not have a patent iridectomy.

Use of Antidiabetic Medications: Weight loss may increase the risk of hypoglycemia in patients with type 2 diabetes mellitus treated with insulin and/or insulin secretagogues (eg, sulfonylureas). Monitor blood glucose levels.

Adverse Reactions: Most common adverse reactions (>5%) include: nausea (32.5%), constipation (19.2%), headache (17.6%), vomiting (10.7%), dizziness (9.9%), insomnia (9.2%), dry mouth (8.1%), and diarrhea (7.1%).

Drug Interactions: Increased risk of hypertensive reactions can occur when CONTRAVE is used concomitantly with MAOIs. Use caution and consider dose reduction of drugs metabolized by CYP2D6 when using with CONTRAVE. Avoid concomitant use with CYP2B6 inducers. Reduce CONTRAVE dose when taken with CYP2B6 inhibitors. Dose CONTRAVE with caution when used with drugs that lower seizure threshold. Use caution and monitor for CNS toxicity when using CONTRAVE concomitantly with dopaminergic drugs (levodopa and amantadine). CONTRAVE can cause false positive urine test results for amphetamines.

Indication
CONTRAVE is indicated as an adjunct to a reduced-calorie diet and increased physical activity for chronic weight management in adults with an initial body mass index (BMI) of:

• 30 kg/m² or greater (obese) or
• 27 kg/m² or greater (overweight) in the presence of at least one weight-related comorbid condition (eg, hypertension, type 2 diabetes mellitus, or dyslipidemia)

Limitations of Use

The effect of CONTRAVE on cardiovascular morbidity and mortality has not been established. The safety and effectiveness of CONTRAVE in combination with other products intended for weight loss, including prescription drugs, over-the-counter drugs, and herbal preparations, have not been established.

Please see full Prescribing Information, including Medication Guide, for Contrave.

More information is available at http://www.contravehcp.com/ and http://www.contrave.com/.

Contrave® is a trademark of Orexigen Therapeutics, Inc. registered with the U.S. Patent and Trademark Office and used under license by Takeda Pharmaceuticals America, Inc.

About Orexigen Therapeutics

Orexigen Therapeutics, Inc. is a biopharmaceutical company focused on the treatment of obesity. Orexigen developed Contrave® (naltrexone HCI and bupropion HCI extended-release), which is approved in the United States. Orexigen's strategy for Contrave is to pursue marketing authorizations worldwide and pharmaceutical partnerships for global commercialization. Orexigen's partner for North America, Takeda Pharmaceuticals, will commercialize Contrave in the United States, Canada and Mexico. Orexigen has submitted an application for marketing authorization for NB32 (naltrexone HCI and bupropion HCI extended-release) in Europe, with an opinion from the European Medicines Agency's Committee for Medicinal Products for Human Use (CHMP) expected in December 2014. Further information about the Company can be found at http://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 an opinion for the NB32 MAA by the CHMP by year end; the success of a U.S. primary care launch of Contrave; the Company's strategy to pursue marketing authorizations worldwide; and the potential to obtain partner(s) to commercialize Contrave in certain territories outside of North America.  The inclusion of forwardlooking 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: the possibility that public disclosure of the results of the interim analysis of the Light Study would later be deemed to jeopardize the integrity of ongoing cardiovascular outcomes trials 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 or another cardiovascular outcomes trial; the possibility that the CHMP determines to not approve Contrave; the potential for early termination of Orexigen's North American collaboration agreement with Takeda; the possibility that Orexigen is unable to find a partner for Contrave in territories outside of North America, the final results of the Light Study or another cardiovascular outcomes trial may not support continued approval of Contrave; the therapeutic and commercial value of Contrave; and other risks described in Orexigen's filings with the Securities and Exchange Commission. You are cautioned not to place undue reliance on these forwardlooking 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 on August 8, 2014 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 forwardlooking 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.

SOURCE Orexigen Therapeutics, Inc.