Introduction: The TROPHIES observational study enrolled patients with type 2 diabetes mellitus (T2DM) initiating their first injectable treatment with the glucagon-like peptide 1 receptor agonists (GLP-1 RAs) dulaglutide or liraglutide. This manuscript focuses on the study design, baseline characteristics of the enrolled population, and factors associated with GLP-1 RA choice.
Methods: TROPHIES is a prospective, observational, 24-month study conducted in France, Germany, and Italy. Inclusion criteria include adult patients with T2DM, naïve to injectable antihyperglycemic treatments, initiating dulaglutide or liraglutide per routine clinical practice. The primary outcome is the duration of treatment on dulaglutide or liraglutide without a significant treatment change.
Results: The analysis included 2181 patients (dulaglutide, 1130; liraglutide, 1051) (cutoff date May 15, 2019). The population was 56% male with mean [standard deviation (SD)] patient characteristics at baseline as follows: age, 59.2 (11.0) years; body mass index (BMI), 33.9 (6.6) kg/m2; T2DM duration, 8.5 (6.9) years; and glycated hemoglobin (HbA1c), 8.2 (1.3)%. Between-cohort demographic and clinical characteristics were balanced. The mean (SD) HbA1c and BMI values for French, German, and Italian patients were, respectively, 8.6 (1.4)%, 8.2 (1.4)%, 8.0 (0.8)%; 33.3 (6.1) kg/m2, 36.0 (7.2) kg/m2, and 32.6 (5.9) kg/m2.
Conclusion: This study analysis at baseline provides an opportunity to evaluate between-country differences in baseline HbA1c, weight, macrovascular complications, and factors driving GLP-1 RA selection for patients with T2DM in daily practice.
Keywords: Dulaglutide; Glucagon-like peptide 1 receptor agonists; Injectable therapy; Liraglutide; Observational study design; Patient characteristics; Type 2 diabetes.
Dulaglutide and liraglutide are medications that can help people with type 2 diabetes mellitus (T2DM) to control their blood sugar levels. These medications may also reduce body weight and reduce the risk of major cardiovascular disease. Given these treatment effects, it is essential to know how they are used in everyday clinical practice. Therefore, a study is being performed in three countries (France, Germany, and Italy) in people with T2DM who had a first-ever injectable therapy for T2DM with dulaglutide or liraglutide. Here, we present the study design, the patient characteristics at the start of treatment, and the factors driving the choice of one or the other medication. We analyzed data from 2181 people with T2DM. On average, it was shown that they were middle-aged and obese. On average, these people were diagnosed with T2DM 8.5 years before the start of dulaglutide or liraglutide and had high blood sugar levels when these medications were started. The patient characteristics were slightly different between the three countries. Country-specific factors driving the choice of either medication were also identified.