Abstract

Background and Aims: Sodium–glucose cotransporter 2 inhibitors decrease blood pressure in patients with type 2 diabetes, but the consistency and magnitude of blood pressure lowering with dapagliflozin in patients with chronic kidney disease (CKD) is unknown. A pre-specified analysis of the DAPA-CKD trial to investigate the effect of dapagliflozin on systolic blood pressure (SBP) in patients with CKD, with and without type 2 diabetes was conducted. Methods: A total of 4304 adults with baseline estimated glomerular filtration rate (eGFR) 25–75 mL/min/1.73m2 and urinary albumin-to-creatinine ratio (UACR) 200–5000 mg/g were randomized to either dapagliflozin 10 mg or placebo once daily; median follow-up was 2.4 years. The primary endpoint was a composite of sustained ≥50% eGFR decline, end-stage kidney disease, or death from a kidney or cardiovascular cause. Change in SBP was a pre-specified outcome. Results: Baseline mean (SD) SBP was 137.1 mmHg (17.4). By Week 2, dapagliflozin compared to placebo reduced SBP by 3.6 mmHg (95% CI 2.8−4.4 mmHg), an effect maintained over the duration of the trial (2.9 mmHg, 2.3−3.6 mmHg). Time-averaged reductions in SBP were 3.2 mmHg (2.5–4.0 mmHg) in patients with diabetes and 2.3 mmHg (1.2–3.4 mmHg) in patients without diabetes. The time-averaged effect of dapagliflozin on diastolic blood pressure (DBP) was 1.0 mmHg (0.6–1.4 mmHg); 0.8 mmHg (0.4–1.3 mmHg) in patients with diabetes and 1.4 mmHg (0.7–2.1 mmHg) in patients without diabetes. Benefits of dapagliflozin on the primary composite and secondary endpoints were evident across the spectrum of baseline SBP and DBP. Conclusion: In patients with CKD and albuminuria, randomization to dapagliflozin was associated with modest reductions in systolic and diastolic BP.