Key result
Aldosterone synthase inhibitors reduce BP and albuminuria in CKD with a manageable ~0.3 mmol/L potassium rise.
Why the study?
Despite contemporary guideline-directed medical therapy, residual risk persists for adverse kidney and cardiovascular outcomes in chronic kidney disease, where aldosterone promotes inflammation, fibrosis, and progression.
Aldosterone synthase inhibitors represent a promising emerging therapeutic class for reducing residual cardiovascular and kidney risks in patients with CKD by lowering blood pressure and albuminuria.
May add aldosterone synthase inhibition as adjunct for hypertensive CKD; extends Phase 2 signals with Phase 3 randomized confirmation.
Aldosterone contributes to the progression of chronic kidney disease (CKD) not only through its effects on blood pressure (BP) but also by promoting inflammation and fibrosis in the kidney and cardiovascular system. Despite contemporary treatment with renin–angiotensin system inhibitors, mineralocorticoid receptor antagonists, and sodium–glucose cotransporter 2 (SGLT2) inhibitors, residual risk persists for adverse kidney and cardiovascular outcomes. Aldosterone synthase inhibition (ASI) has emerged as a potent strategy to directly suppress aldosterone production. Several selective inhibitors, including baxdrostat, lorundrostat, and vicadrostat, have been shown to lower aldosterone levels without affecting cortisol synthesis in a clinically meaningful manner. Clinical studies in hypertension consistently show a decrease in systolic BP with these agents. In a CKD population, vicadrostat dose-dependently reduced the urinary albumin-to-creatinine ratio with additional BP lowering, and possibly greater albuminuria reduction when combined with empagliflozin. Similar findings have been observed with lorundrostat and baxdrostat in patients with CKD and uncontrolled hypertension. Median increases in serum potassium of approximately 0.3 mmol/L that have been observed with ASI were generally manageable in clinical trial populations. Emerging evidence from clinical trials and meta-analyses suggests that concomitant SGLT2 inhibitor therapy may mitigate the risk of clinically significant hyperkalemia, also supporting the use of combination therapy. Overall, ASI provide a potentially beneficial approach to reduce residual risks of CKD. Several phase 3 trials testing vicadrostat or baxdrostat across different populations with CKD, hypertension, or cardiovascular disease will determine whether favourable effects on albuminuria translate into improved kidney and cardiovascular outcomes.
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Tuttle et al. (2026) conducted a review in Chronic kidney disease. Aldosterone synthase inhibition was evaluated. Aldosterone synthase inhibitors lower blood pressure and reduce albuminuria in chronic kidney disease, with manageable median increases in serum potassium of approximately 0.3 mmol/L.
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