Efficacy and Safety of Once-Weekly Dulaglutide Versus Insulin Glargine in Patients With Type 2 Diabetes on Metformin and Glimepiride (AWARD-2)

Jun 20, 2015Diabetes care

Effectiveness and Safety of Weekly Dulaglutide Compared to Insulin Glargine in People with Type 2 Diabetes Taking Metformin and Glimepiride

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Abstract

Dulaglutide 1.5 mg led to a 1.08% reduction in HbA1c after 52 weeks, outperforming daily insulin glargine.

Dulaglutide 1.5 mg achieved a greater reduction in HbA1c compared to glargine, meeting statistical criteria for superiority.
More patients on dulaglutide 1.5 mg reached HbA1c targets of less than 7.0% compared to those on glargine.
Body weight decreased in patients taking dulaglutide, while it increased in those using glargine.
Total rates of hypoglycemia were lower for dulaglutide, with severe cases being minimal.
Dulaglutide was associated with a higher incidence of gastrointestinal side effects, including nausea and diarrhea.

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OBJECTIVE: This study compared the efficacy and safety of once-weekly dulaglutide, a glucagon-like peptide-1 receptor agonist, with daily insulin glargine, both combined with maximally tolerated doses of metformin and glimepiride in patients with type 2 diabetes. The primary objective was noninferiority of dulaglutide 1.5 mg to glargine in the HbA1c change from baseline at 52 weeks.

RESEARCH DESIGN AND METHODS: In this 78-week, open-label study, 810 patients were randomized to dulaglutide 1.5 mg, dulaglutide 0.75 mg, or glargine.

RESULTS: The baseline mean ± SD HbA1c was 8.1 ± 1.0% (65.5 ± 10.8 mmol/mol). The least squares mean ± SE HbA1c change from baseline to the primary end point was -1.08 ± 0.06% (-11.8 ± 0.7 mmol/mol) for dulaglutide 1.5 mg, -0.76 ± 0.06% (-8.3 ± 0.7 mmol/mol) for dulaglutide 0.75 mg, and -0.63 ± 0.06% (-6.9 ± 0.7 mmol/mol) for glargine, with an end point mean ± SD dose of 29 ± 26 units (0.33 ± 0.24 units/kg), and a fasting plasma glucose (mean ± SD) of 118 ± 23 mg/dL from self-monitored plasma glucose. Statistical criteria for superiority were met with dulaglutide 1.5 mg and for noninferiority with dulaglutide 0.75 mg. More patients on dulaglutide 1.5 mg achieved HbA1c targets <7.0% (53 mmol/mol) versus glargine (P < 0.001). Body weight decreased with dulaglutide and increased with glargine. Total hypoglycemia rates were lower with dulaglutide; severe hypoglycemia was minimal. Increases in pancreatic enzymes were observed for dulaglutide. Incidence of nausea (15.4, 7.7, and 1.5%) and diarrhea (10.6, 9.2, and 5.7%) were more common with dulaglutide 1.5 mg and 0.75 mg than with glargine.

CONCLUSIONS: Once-weekly dulaglutide 1.5 mg, compared with daily insulin glargine without forced titration, demonstrated greater HbA1c reduction and weight loss, with a higher incidence of gastrointestinal adverse events and a lower risk of hypoglycemia.

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Efficacy and Safety of Once-Weekly Dulaglutide Versus Insulin Glargine in Patients With Type 2 Diabetes on Metformin and Glimepiride (AWARD-2)

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