Efficacy and Safety of Dulaglutide Monotherapy Compared to Glimepiride in Oral Antihyperglycemic Medication-Naïve Chinese patients with Type 2 Diabetes: A Post Hoc Analysis of AWARD-CHN1.

Introduction: Glucagon-like peptide (GLP)-1 receptor agonists are glucose-lowering agents associated with weight loss, cardiovascular benefits, and low hypoglycemic risk and are recommended by recent guidelines as first-line therapy for some patients with type 2 diabetes (T2D). This post hoc analysis of the AWARD-CHN1 study compared the efficacy and safety of once-weekly dulaglutide with glimepiride in oral antihyperglycemic medication (OAM)-naïve Chinese patients with T2D.

Methods: AWARD-CHN1 was a phase 3, double-blind study with 737 patients randomized 1:1:1 to once-weekly dulaglutide (1.5 or 0.75 mg) or glimepiride (1-3 mg/day). This is a post hoc analysis of AWARD-CHN1 based on mixed-model repeated measures using a modified intent-to-treat analysis set with only the OAM-naïve Chinese population.

Results: There were 264 OAM-naïve Chinese patients included in this analysis (dulaglutide 1.5 mg, n = 87; dulaglutide 0.75 mg, n = 90; glimepiride, n = 87). A greater glycated hemoglobin (HbA1c) reduction from baseline was observed with dulaglutide 1.5 mg and 0.75 mg compared to glimepiride (- 2.02% and - 1.84% vs - 1.37%, respectively; both P < 0.001). Significantly more patients in dulaglutide 1.5 mg and 0.75 mg groups achieved HbA1c targets < 7.0% compared to glimepiride (86.2% and 81.1% vs 65.5%; P = 0.002 and P = 0.026, respectively). Beta cell function was significantly increased for dulaglutide groups compared to glimepiride. Mean body weight was significantly reduced for dulaglutide 1.5 mg and 0.75 mg compared to glimepiride (- 1.40 kg and - 0.96 kg vs + 0.73 kg, respectively; both P < 0.001). Through 26 weeks, 7.9%, 4.2%, and 18.2% of patients reported hypoglycemia, and 40.4%, 23.2%, and 8.0% of patients reported at least one gastrointestinal treatment emergent adverse event, in dulaglutide 1.5 mg, 0.75 mg, and glimepiride groups, respectively.

Conclusions: In this post hoc analysis, dulaglutide was effective in reducing both HbA1c and weight with favorable tolerability and safety profile, which is consistent with results seen in larger international dulaglutide monotherapy studies.

Trial Registration: ClinicalTrials.gov NCT01644500.