The new findings reported by Dr. Filippatos “should be considered hypothesis generating. Until we have more information, upstream therapies, including mineralocorticoid receptor antagonists [MRAs, the umbrella drug class that includes finerenone], should be used in appropriate patient populations based on defined benefits with the hope they will also reduce the development of AFib and atrial flutter over time,” Gerald V. Naccarelli, MD, and coauthors wrote in an editorial that accompanied the report ().
The FIDELIO-DKD trial randomized 5,734 patients at 913 sites in 48 countries, including 461 patients with a history of AFib. The observed link of finerenone treatment with a reduced incidence of AFib appeared consistent regardless of patients’ age, sex, race, their kidney characteristics at baseline, baseline levels of systolic blood pressure, serum potassium, body mass index, A1c, or use of glucose-lowering medications.
Finerenone belongs to a new class of MRAs that have a nonsteroidal structure, in contrast with the MRAs spironolactone and eplerenone. This means that finerenone does not produce steroidal-associated adverse effects linked with certain other MRAs, such as gynecomastia, and may also differ in other actions.
FIDELIO-DKD was sponsored by Bayer, the company developing finerenone. Dr. Filippatos has received lecture fees from or participated in the direction of trials on behalf of Bayer, as well as for Amgen, Boehringer Ingelheim, Medtronic, Novartis, Servier, and Vifor. Dr. Curtis is an adviser to and receives honoraria from St. Jude Medical, and receives honoraria from Medtronic. Dr. Naccarelli has been a consultant to Acesion, ARCA, GlaxoSmithKline, Janssen, Milestone, Omeicos, and Sanofi. His coauthors had no disclosures.