Effect of naltrexone plus bupropion on weight loss in overweight and obese adults (COR-I): a multicentre, randomised, double-blind, placebo-controlled, phase 3 trial
Journal Title: | The Lancet (British edition) 2010, Vol.376 (9741), p.595-605 |
Main Author: | Greenway, Frank L, Prof |
Other Authors: | Fujioka, Ken, MD , Plodkowski, Raymond A, Prof , Mudaliar, Sunder, Prof , Guttadauria, Maria, MD , Erickson, Janelle, PhD , Kim, Dennis D, MD , Dunayevich, Eduardo, MD |
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Quelle: | Alma/SFX Local Collection |
Publisher: | Kidlington: Elsevier Ltd |
ID: | ISSN: 0140-6736 |
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title: | Effect of naltrexone plus bupropion on weight loss in overweight and obese adults (COR-I): a multicentre, randomised, double-blind, placebo-controlled, phase 3 trial |
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ispartof: | The Lancet (British edition), 2010, Vol.376 (9741), p.595-605 |
description: | Summary Background Despite increasing public health concerns regarding obesity, few safe and effective drug treatments are available. Combination treatment with sustained-release naltrexone and bupropion was developed to produce complementary actions in CNS pathways regulating bodyweight. The Contrave Obesity Research I (COR-I) study assessed the effect of such treatment on bodyweight in overweight and obese participants. Methods Men and women aged 18–65 years who had a body-mass index (BMI) of 30–45 kg/m2 and uncomplicated obesity or BMI 27–45 kg/m2 with dyslipidaemia or hypertension were eligible for enrolment in this randomised, double-blind, placebo-controlled, phase 3 trial undertaken at 34 sites in the USA. Participants were prescribed mild hypocaloric diet and exercise and were randomly assigned in a 1:1:1 ratio to receive sustained-release naltrexone 32 mg per day plus sustained-release bupropion 360 mg per day combined in fixed-dose tablets (also known as NB32), sustained-release naltrexone 16 mg per day plus sustained-release bupropion 360 mg per day combined in fixed-dose tablets (also known as NB16), or matching placebo twice a day, given orally for 56 weeks. The trial included a 3-week dose escalation. Randomisation was done by use of a centralised, computer-generated, web-based system and was stratified by study centre. Co-primary efficacy endpoints at 56 weeks were percentage change in bodyweight and proportion of participants who achieved a decrease in bodyweight of 5% or more. The primary analysis included all randomised participants with a baseline weight measurement and a post-baseline weight measurement while on study drug (last observation carried forward). This study is registered with ClinicalTrials.gov , number NCT00532779. Findings 1742 participants were enrolled and randomised to double-blind treatment (naltrexone 32 mg plus bupropion, n=583; naltrexone 16 mg plus bupropion, n=578; placebo, n=581). 870 (50%) participants completed 56 weeks of treatment (n=296; n=284; n=290, respectively) and 1453 (83%) were included in the primary analysis (n=471; n=471; n=511). Mean change in bodyweight was −1·3% (SE 0·3) in the placebo group, −6·1% (0·3) in the naltrexone 32 mg plus bupropion group (p |
language: | eng |
source: | Alma/SFX Local Collection |
identifier: | ISSN: 0140-6736 |
fulltext: | fulltext |
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