Finerenone Across the Cardiovascular–Kidney–Metabolic Continuum: From Mechanistic Rationale to Clinical Positioning—A Narrative Review

The cardiovascular–kidney–metabolic (CKM) syndrome has emerged as an integrated framework linking obesity, type 2 diabetes, chronic kidney disease (CKD), and heart failure with preserved or mildly reduced ejection fraction through shared mechanisms including inflammation, oxidative stress, endothelial dysfunction, and fibrosis. Persistent mineralocorticoid receptor overactivation plays a central role in this continuum, contributing to progressive cardiac and renal injury despite optimized renin–angiotensin system blockade. Finerenone, a selective non-steroidal mineralocorticoid receptor antagonist, has therefore gained increasing attention as a targeted strategy to reduce residual cardiorenal risk. This narrative review summarizes the mechanistic rationale and clinical evidence supporting finerenone across the CKM spectrum. Experimental data indicate that finerenone attenuates inflammation, fibrosis, myocardial hypertrophy, and adverse remodeling, while proteomic and translational analyses suggest biological complementarity with sodium–glucose cotransporter 2 inhibitors. Clinically, pivotal randomized trials have demonstrated that finerenone reduces kidney disease progression and major cardiovascular events in patients with CKD and type 2 diabetes, while the FINEARTS-HF trial extended these benefits to patients with heart failure with mildly reduced or preserved ejection fraction by reducing worsening heart failure events. Additional subgroup, pooled, and meta-analytic data reinforce the consistency of these effects across a broad range of cardiorenal phenotypes. Taken together, current evidence positions finerenone as an important component of contemporary CKM management, particularly in patients with diabetic CKD and selected heart failure phenotypes. Its principal value lies in targeting residual inflammatory and fibrotic risk beyond conventional hemodynamic and metabolic control. Future progress will depend on earlier phenotype recognition, improved implementation and adherence, and wider adoption of pathway-oriented combination therapy across the cardiorenal continuum.