Efficacy and safety of finerenone in patients with chronic kidney disease and type 2 diabetes by GLP-1RA treatment: A subgroup analysis from the FIDELIO-DKD trial

Aims: Finerenone significantly reduced the risk of kidney and cardiovascular (CV) outcomes in patients with chronic kidney disease and type 2 diabetes in the FIDELIO-DKD trial (NCT02540993). This exploratory subgroup analysis investigates the effect of glucagon-like peptide-1 receptor agonist (GLP-1RA) use on the treatment effect of finerenone. Materials and Methods: Patients with type 2 diabetes, urine albumin-to-creatinine ratio (UACR) 30-5000 mg/g and estimated glomerular filtration rate 25-<75 ml/min per 1.73 m2 receiving optimized renin-angiotensin system blockade were randomized to finerenone or placebo. Results: Of the 5674 patients analysed, overall, 394 (6.9%) received GLP-1RAs at baseline. A reduction in UACR with finerenone was observed with or without baseline GLP-1RA use; ratio of least-squares means 0.63 (95% confidence interval 0.56, 0.70) with GLP-1RA use and 0.69 (95% confidence interval 0.67, 0.72) without GLP-1RA use (p value for interaction.20). Finerenone also significantly reduced the primary kidney (time to kidney failure, sustained decrease in estimated glomerular filtration rate ≥40% from baseline, or renal death) and key secondary CV outcomes (time to CV death, non-fatal myocardial infarction, non-fatal stroke, or hospitalization for heart failure) versus placebo, with no clear difference because of GLP-1RA use at baseline (p value for interaction.15 and.51 respectively) or any time during the trial. The safety profile of finerenone was similar between subgroups. Conclusions: This exploratory subgroup analysis suggests that finerenone reduces UACR in patients with or without GLP-1RA use at baseline, and the effects on kidney and CV outcomes are consistent irrespective of GLP-1RA use.