Cited by 1,198Pharmacology and Obesity TreatmentDiabetes Treatment and ManagementBariatric Surgery and Outcomes

Efficacy of Liraglutide for Weight Loss Among Patients With Type 2 Diabetes: The SCALE Diabetes Randomized Clinical Trial

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Davies, Melanie J., Bergenstal, Richard, Bode, Bruce, Kushner, Robert F., Lewin, Andrew, Skjøth, Trine Vang, Andreasen, Arne Haahr, Jensen, Christine Bjørn +2 more·2015·JAMA

Abstract

IMPORTANCE: Weight loss of 5% to 10% can improve type 2 diabetes and related comorbidities. Few safe, effective weight-management drugs are currently available. OBJECTIVE: To investigate efficacy and safety of liraglutide vs placebo for weight management in adults with overweight or obesity and type 2 diabetes. DESIGN, SETTING, AND PARTICIPANTS: Fifty-six-week randomized (2:1:1), double-blind, placebo-controlled, parallel-group trial with 12-week observational off-drug follow-up period. The study was conducted at 126 sites in 9 countries between June 2011 and January 2013. Of 1361 participants assessed for eligibility, 846 were randomized. Inclusion criteria were body mass index of 27.0 or greater, age 18 years or older, taking 0 to 3 oral hypoglycemic agents (metformin, thiazolidinedione, sulfonylurea) with stable body weight, and glycated hemoglobin level 7.0% to 10.0%. INTERVENTIONS: Once-daily, subcutaneous liraglutide (3.0 mg) (n = 423), liraglutide (1.8 mg) (n = 211), or placebo (n = 212), all as adjunct to 500 kcal/d dietary deficit and increased physical activity (≥150 min/wk). MAIN OUTCOMES AND MEASURES: Three coprimary end points: relative change in weight, proportion of participants losing 5% or more, or more than 10%, of baseline weight at week 56. RESULTS: Baseline weight was 105.7 kg with liraglutide (3.0-mg dose), 105.8 kg with liraglutide (1.8-mg dose), and 106.5 kg with placebo. Weight loss was 6.0% (6.4 kg) with liraglutide (3.0-mg dose), 4.7% (5.0 kg) with liraglutide (1.8-mg dose), and 2.0% (2.2 kg) with placebo (estimated difference for liraglutide [3.0 mg] vs placebo, -4.00% [95% CI, -5.10% to -2.90%]; liraglutide [1.8 mg] vs placebo, -2.71% [95% CI, -4.00% to -1.42%]; P < .001 for both). Weight loss of 5% or greater occurred in 54.3% with liraglutide (3.0 mg) and 40.4% with liraglutide (1.8 mg) vs 21.4% with placebo (estimated difference for liraglutide [3.0 mg] vs placebo, 32.9% [95% CI, 24.6% to 41.2%]; for liraglutide [1.8 mg] vs placebo, 19.0% [95% CI, 9.1% to 28.8%]; P < .001 for both). Weight loss greater than 10% occurred in 25.2% with liraglutide (3.0 mg) and 15.9% with liraglutide (1.8 mg) vs 6.7% with placebo (estimated difference for liraglutide [3.0 mg] vs placebo, 18.5% [95% CI, 12.7% to 24.4%], P < .001; for liraglutide [1.8 mg] vs placebo, 9.3% [95% CI, 2.7% to 15.8%], P = .006). More gastrointestinal disorders were reported with liraglutide (3.0 mg) vs liraglutide (1.8 mg) and placebo. No pancreatitis was reported. CONCLUSIONS AND RELEVANCE: Among overweight and obese participants with type 2 diabetes, use of subcutaneous liraglutide (3.0 mg) daily, compared with placebo, resulted in weight loss over 56 weeks. Further studies are needed to evaluate longer-term efficacy and safety. TRIAL REGISTRATION: clinicaltrials.gov Identifier:NCT01272232.

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Crossref · 10.1001/jama.2015.9676

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  • Adding weight-loss medications produces significantly more weight loss than lifestyle intervention alone and yields greater A1C lowering and improvements in cardiometabolic risk factors.

    “The addition of weight-loss medications has been shown to achieve significantly more weight loss than lifestyle interventions alone and produce greater A1C lowering and improvements in cardiometabolic risk factors.”

    From American Association of Clinical Endocrinology Clinical Practice Guideline: Developing a Diabetes Mellitus Comprehensive Care Plan-2022 Update. (2022) · cites this paper as [737]

    The Primary End Points section reports significantly greater weight loss with liraglutide than placebo; all groups also received dietary and physical-activity intervention. Table 3 and the Secondary Efficacy End Points section report greater A1C lowering and improvements in some cardiometabolic measures. The claim generalizes these findings from liraglutide in adults with type 2 diabetes to weight-loss medications broadly. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • All FDA-approved medications for chronic weight management have been shown to be effective and safe in people with type 2 diabetes in randomized controlled trials and a meta-analysis.

    “All FDAdapproved medications for chronic weight management have also been demonstrated to be effective and safe in both RCTs and a meta-analysis involving persons with T2D.735–742”

    From American Association of Clinical Endocrinology Clinical Practice Guideline: Developing a Diabetes Mellitus Comprehensive Care Plan-2022 Update. (2022) · cites this paper as [737]

    The Discussion (page unavailable in our copy) reports that a randomized trial found liraglutide 3.0 mg effective and generally well tolerated for weight management in participants with type 2 diabetes. This paper does not establish the claim for all FDA-approved chronic weight-management medications or report a meta-analysis; its Conclusions also call for further study of longer-term safety. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • In studies of weight-loss medications in type 2 diabetes, medication arms consistently produced greater weight loss than lifestyle alone, lower A1C despite less need for diabetes medications, reductions in blood pressure, lower triglycerides and higher HDL-C, decreased hepatic transaminases, and improvements in inflammatory and other biomarkers such as CRP, fibrinogen, and adiponectin, compared to

    “The study’s weight-loss medication arms consistently resulted in: (1) greater weight loss than lifestyle alone, (2) lower A1C values despite less need for DM medications, (3) reductions in BP, (4) lower triglycerides and higher HDL-C, (5) decreased levels of hepatic transaminases, and (6) improvements in inflammatory and other biomarkers such as CRP, fibrinogen, and adiponectin, when compared to”

    From American Association of Clinical Endocrinology Clinical Practice Guideline: Developing a Diabetes Mellitus Comprehensive Care Plan-2022 Update. (2022) · cites this paper as [737]

    The Secondary Efficacy End Points section reports greater reductions in HbA1c and oral hypoglycemic-agent use, lower systolic blood pressure, and improved CRP with liraglutide versus placebo; the 3.0-mg dose also improved triglycerides and HDL-C. But it reports increased fibrinogen, no effect on adiponectin, and lipid improvements only at the 3.0-mg dose. The passages found do not establish a reduction in hepatic transaminases. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • More episodes of gallstone disease occurred with liraglutide, a finding that has been reported previously.

    “There were more episodes of gallstone disease with liraglutide, a finding that has been reported previously.”

    From Liraglutide and Cardiovascular Outcomes in Type 2 Diabetes (2016) · cites this paper as [26]

    The Safety section reports more gallbladder-related adverse events with liraglutide than placebo (1.2% and 1.9% versus 0.5%). It does not identify those events specifically as gallstone disease or say that this particular finding had been reported previously. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Davies et al. observed that in obese patients with T2D treated with varying doses of Liraglutide, after 12 weeks, average weight loss was 4.7% (−5 kg) and increased to 6% (−6.4 kg) when doses rose from 1.8 to 3 mg, compared to about 2.2% (−2.2 kg) among those on placebo.

    “after following this regimen for 12 weeks, average weight loss stood at 4.7% of initial body mass (−5 kg as an absolute value) and increased to 6% (−6.4 kg as an absolute value) when administered doses rose from 1.8 to 3 mg respectively, compared against a mere loss of about 2.2% body mass (which equates to −2.2 kg actual value) among those on placebo.”

    From Anti-inflammatory role of glucagon-like peptide 1 receptor agonists and its clinical implications (2024) · cites this paper as [89]

    The Abstract and Primary End Points (Body Weight) report weight losses of 4.7% (5.0 kg) at 1.8 mg and 6.0% (6.4 kg) at 3.0 mg, but these are week-56 outcomes, not results after 12 weeks. They report placebo weight loss as 2.0% (2.2 kg), not 2.2%; the Abstract describes the 12 weeks as an off-drug follow-up period. (LLM, conf=0.90)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 1

  1. [1]1. American Society for Metabolic and Bariatric Surgery, Obesity Society, American Society of Bariatric Physicians, American Association of Clinical Endocrinologists. Joint Press Release: Obesity Is a Disease: Leading Obesity Groups Agree. PRNewswire website. http://www.prnewswire.com /news-releases/obesity-is-a-disease-leading -obesity-groups-agree-212194851.html. 2013. Accessed June 4, 2015.

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Authors
Davies, M. J., Bergenstal, R., Bode, B., Kushner, R. F., Lewin, A., Skjøth, T. V., Andreasen, A. H., Jensen, C. B., DeFronzo, R. A., & for the NN8022-1922 Study Group
Affiliations
  • University of Leicester (GB)
  • Park Nicollet Health Services (US)
  • Atlanta Diabetes Associates (US)
  • Northwestern University (US)
  • National Research Institute (US)
  • Novo Nordisk (Denmark) (DK)
  • Texas Diabetes Institute (US)
Venue
JAMA
Published
2015-08-18
Volume
314
Issue
7
Pages
687
ISSN
  • 0002-9955 (ISSN-L)
  • 0098-7484
OpenAlex
W1798757189
Cited by
1,198
References
29
Citations by year
2026: 121 · 2025: 188 · 2024: 152 · 2023: 141 · 2022: 94 · 2021: 114 · 2020: 74 · 2019: 67 · 2018: 78 · 2017: 74 · 2016: 83 · 2015: 11
FWCI
59.16
Type
journal article
Language
en
Open access
Locations
  • JAMA (publishedVersion)
  • PubMed (publishedVersion)
  • Leicester Research Archive (University of Leicester) (acceptedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Amgen
  • Bristol-Myers Squibb
  • Eli Lilly and Company
  • Pfizer
  • AstraZeneca
  • GlaxoSmithKline
  • Sanofi
  • Gilead Sciences
  • Leona M. and Harry B. Helmsley Charitable Trust
  • MannKind Corporation
  • Halozyme
  • Dexcom
  • Zafgen
  • ResMed
  • Bayer HealthCare
  • Novo Nordisk
  • Servier
  • Bavarian Nordic
  • Esperion Therapeutics
  • National Institutes of Health
  • Abbott Diabetes Care
Topics
  • Health Sciences › Medicine › Pharmacology › Pharmacology and Obesity Treatment
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
Keywords
liraglutide, type 2 diabetes, weight loss, obesity, overweight, GLP-1 receptor agonists, physical activity, HbA1c, glycemic control, drug safety, adverse events, dose comparison, weight regain, body mass index
MeSH terms
Liraglutide, Adult, Aged, Body Weight, Diabetes Mellitus, Type 2, Diet, Reducing, Double-Blind Method, Female, Humans, Hypoglycemic Agents, Injections, Subcutaneous, Male, Middle Aged, Obesity, Weight Loss, Exercise, Glucagon-Like Peptide 1

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