Finerenone for Chronic Kidney Disease and Heart Failure
Finerenone is recommended at 10-20 mg once daily for adults with type 2 diabetes and chronic kidney disease (eGFR ≥25 mL/min/1.73 m²) who have persistent albuminuria (UACR ≥30 mg/g) despite maximum tolerated renin-angiotensin system blockade, to reduce cardiovascular events and CKD progression. 1, 2
Patient Selection Criteria
Before initiating finerenone, verify the following eligibility requirements:
- Type 2 diabetes with CKD and albuminuria (UACR ≥30 mg/g) 1, 3
- eGFR ≥25 mL/min/1.73 m² (do not use if eGFR <25 or on dialysis) 3
- Serum potassium ≤4.8 mmol/L at screening 1, 3
- Already on maximum tolerated dose of ACE inhibitor or ARB 3
Exclude patients with:
- Heart failure with reduced ejection fraction 1
- Uncontrolled hypertension 1
- End-stage renal disease or dialysis 3
- Baseline potassium >4.8 mmol/L 3
Dosing Algorithm
Initial dose determination based on eGFR: 1, 3
- eGFR 25-60 mL/min/1.73 m²: Start 10 mg once daily
- eGFR >60 mL/min/1.73 m²: Start 20 mg once daily
Dose uptitration after 1 month: 1, 3
- Increase from 10 mg to 20 mg daily if:
- Serum potassium remains ≤4.8 mmol/L
- eGFR is stable
- Medication is well-tolerated
Potassium Monitoring Protocol
Critical monitoring schedule to prevent hyperkalemia: 3
- Check potassium at baseline before starting
- Recheck at 4 weeks after initiation
- Continue regular monitoring throughout treatment
Management of elevated potassium: 3
- Potassium ≤5.5 mmol/L: Continue finerenone
- Potassium >5.5 mmol/L: Withhold finerenone temporarily
- Restart at 10 mg daily when potassium returns to ≤5.0 mmol/L
Clinical Benefits on Mortality and Morbidity
Cardiovascular outcomes: 1, 2, 4
- 14% reduction in composite cardiovascular death, nonfatal MI, nonfatal stroke, and heart failure hospitalization (HR 0.86,95% CI 0.78-0.95)
- 29% reduction in heart failure hospitalization specifically (HR 0.71,95% CI 0.56-0.90)
- 36% reduction in progression to end-stage kidney disease (HR 0.64,95% CI 0.41-0.995) 1
Renal outcomes: 1
- 23% reduction in composite kidney outcome of sustained ≥57% decrease in eGFR or renal death (HR 0.77,95% CI 0.67-0.88)
- Benefits demonstrated across the full spectrum of CKD severity (eGFR 25-90 mL/min/1.73 m²) 1
Combination Therapy Strategy
Finerenone complements SGLT2 inhibitors with potentially additive benefits and should be considered as second-line therapy for patients with persistent albuminuria already on SGLT2 inhibitors or GLP-1 receptor agonists. 2, 4 The FIDELIO-DKD trial included only 4.5% of patients on SGLT2 inhibitors, but current guidelines support combining these agents. 1
Safety Profile and Common Pitfalls
Hyperkalemia is the primary adverse effect: 1, 4
- Occurs in 10.8% with finerenone vs 5.3% with placebo 1
- Only 1.2% discontinue due to hyperkalemia 1, 4
- Risk is manageable with proper monitoring and dose adjustments 3
Critical pitfall to avoid: Do not initiate finerenone in patients approaching eGFR <25 mL/min/1.73 m², as there is no safety or efficacy data below this threshold, and these patients should be referred to nephrology for renal replacement therapy planning. 3
Additional Cardiovascular Benefits
Beyond the primary indications, finerenone reduces new-onset atrial fibrillation by 29% (HR 0.71,95% CI 0.53-0.94) in patients with CKD and type 2 diabetes, providing additional cardiovascular protection. 5 Recent evidence from FINEARTS-HF also demonstrates benefits in heart failure with preserved or mildly reduced ejection fraction, though this is not yet the primary indication. 6