Effect of GLP-1 receptor agonists on waist circumference among type 2 diabetes patients: a systematic review and network meta-analysis

Aug 14, 2014Endocrine

GLP-1 medicines and their impact on waist size in people with type 2 diabetes: a combined analysis of studies

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Abstract

Significant reductions in waist circumference of -5.24 cm for liraglutide--1.8 mg once daily and -4.73 cm for liraglutide--1.2 mg once daily were observed compared to placebo.

Liraglutide--1.8 mg once daily and liraglutide--1.2 mg once daily are associated with notable decreases in waist circumference.
Exenatide--10 μg twice daily also resulted in a significant waist circumference reduction of -1.34 cm compared to placebo.
Liraglutide treatments showed a greater reduction in waist circumference compared to insulin and thiazolidinediones, with variations from -1.71 to -8.03 cm.
Liraglutide--1.8 mg once daily demonstrated a significant decrease of -1.73 cm versus sitagliptin.
Exenatide--10 μg twice daily had a statistically significant reduction compared with exenatide--5 μg twice daily by -1.21 cm.
Ranking probability analysis indicated that liraglutide--1.8 mg and liraglutide--1.2 mg once daily were the most effective treatments for reducing waist circumference.

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Glucagon-like peptide-1 receptor agonists (GLP-1RAs) are increasingly used in patients with type 2 diabetes. However, the effect on abdominal obesity has not yet been confirmed. The study aimed to systematically evaluate the effect of GLP-1RAs on waist circumference in patients with type 2 diabetes. MEDLINE, EMBASE, the Cochrane library and www.clinicaltrialgov were searched through October 31, 2013. Randomized controlled trials with available data were selected if they compared GLP-1 RAs with placebo and traditional anti-diabetic drugs with a duration≥8 weeks. Weighted mean difference was estimated using random-effect model. Network meta-analysis was performed to supplement direct comparisons. Seventeen trials with 12 treatments were included. Overall, significant reductions on waist circumference following treatment of liraglutide--1.8 mg once daily (-5.24 cm, 95% CI -7.68, -2.93), liraglutide--1.2 mg once daily (-4.73 cm, 95% CI -6.68, -2.65) and exenatide--10 μg twice daily (-1.34 cm, 95 % CI -2.00, -0.75) were detected versus placebo. The reduction effect was more evident when compared with insulin and thiazolidinediones (range -1.71 to -8.03 cm). Compared with exenatide, liraglutide--0.6 mg once daily, taspoglutide, liraglutide--1.2 mg once daily and liraglutide--1.8 mg once daily significantly decreased waist circumference from -3.32 to -6.01 cm. Besides, liraglutide--1.8 mg once daily significantly decreased waist circumference by -1.73 cm (95 % CI -3.04, -0.55) versus sitagliptin, whereas no significant difference following liraglutide--1.2-mg-once-daily treatment was detected compared with liraglutide--1.8 mg once daily and sitagliptin. Reduction was observed with statistical significance for exenatide--10 μg twice daily compared with exenatide--5 μg twice daily (-1.21 cm, 95% CI -2.43, -0.06). Ranking probability analysis indicated liraglutide--1.8 mg once daily and liraglutide--1.2 mg once daily decreased waist circumference most among all 12 treatments with probability of 98.36% and 91.82%, respectively. Some GLP-1RAs, especially liraglutide--1.8 mg once daily and liraglutide--1.2 mg once daily, were associated with a significant reduction in waist circumference.

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Effect of GLP-1 receptor agonists on waist circumference among type 2 diabetes patients: a systematic review and network meta-analysis

Abstract

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