A Retrospective Observational Study Examining the Generalizability of Glucagon-Like Peptide 1 Receptor Agonist Cardiovascular Outcome Trials to the Real-World Population with Type 2 Diabetes in Spain: The REPRESENT Study

Introduction The REPRESENT study aims to examine whether participants enrolled in glucagon-like peptide 1 receptor agonist cardiovascular outcome trials (CVOTs) LEADER (liraglutide), REWIND (dulaglutide), and SUSTAIN-6 (injectable semaglutide) are representative of the Spanish population with type 2 diabetes (T2D). Methods This retrospective observational study used the IQVIA Electronic Medical Records database in Spain to identify adults aged 18 years and older with T2D diagnosed before/between January 2013 and December 2015. Demographic and clinical characteristics were analyzed descriptively. The proportions of individuals in the Spanish cohort who met the key selection criteria of each CVOT were calculated from individuals with available database entries for estimated glomerular filtration rate and body mass index using proxies. Results A total of 24,268 adults with T2D were identified from the IQVIA database. The Spanish cohort was predominantly male (55.5%) and had a mean (± SD) age of 66.8 ± 12.5 years and HbA1c of 7.2 ± 1.5%, with 14.0% having established cardiovascular disease and 2.9% having prior myocardial infarction. The characteristics of the Spanish cohort were more similar to that of REWIND than LEADER or SUSTAIN-6. The proportions of subjects in the Spanish cohort who met the CVOTs key selection criteria were 10.1% for LEADER, 53.6% for REWIND, and 10.4% for SUSTAIN-6. Conclusions Although none of the CVOTs was fully representative of the Spanish cohort, the REWIND population was found to be more representative of the real-world Spanish population with T2D than those of LEADER and SUSTAIN-6. These findings reinforce the applicability of the results of REWIND in clinical practice.