Semaglutide improves kidney outcomes in diabetic kidney disease
Weekly semaglutide lowered serious kidney outcomes and death in type 2 diabetes with chronic kidney disease, with similar benefit across baseline cardiovascular risk groups.
*Randomized trial subgroup analysis; Level 2b (OCEBM).
Citation
Tuttle KR, Bakris GL, Baeres FMM, et al. Kidney and Survival Benefits of Semaglutide in Diabetes With Chronic Kidney Disease: FLOW Trial Cardiovascular Subgroup Analyses. Journal of the American College of Cardiology. 2026;87(21):2996–3012. doi:10.1016/j.jacc.2026.02.5125.
Background
People with type 2 diabetes and chronic kidney disease have high risks of kidney failure and death, especially when cardiovascular disease is present. This analysis tested whether semaglutide’s benefits differ by baseline cardiovascular status.
Patients
3,533 adults (≥18 years) with type 2 diabetes and chronic kidney disease: estimated kidney filtration rate 50–75 with urine albumin-to-creatinine ratio >300 to <5,000 mg/g, or estimated kidney filtration rate 25–<50 with urine albumin-to-creatinine ratio >100 to <5,000 mg/g. Important exclusions were not provided in the excerpt.
Intervention
Semaglutide 1.0 mg injected under the skin once weekly, plus usual care.
Control
Placebo injection once weekly, plus usual care.
Outcome
Primary (composite): sustained ≥50% drop in estimated kidney filtration rate, kidney failure (estimated kidney filtration rate <15, dialysis, or transplant), or death from kidney or cardiovascular causes. Secondary (confirmatory): all-cause death.
Follow-up Period
Median 3.4 years.
Results
| Outcome |
Group with significant benefit |
Effect vs placebo |
NNT (3 years) |
| Primary kidney composite (primary) |
Overall trial population |
Hazard ratio 0.76 (95% CI, 0.66–0.88) |
— |
| Primary kidney composite (primary) |
With heart failure |
Hazard ratio 0.67 (95% CI, 0.49–0.93) |
13 |
| Primary kidney composite (primary) |
Without atherosclerotic cardiovascular disease |
Hazard ratio 0.74 (95% CI, 0.62–0.89) |
— |
| Primary kidney composite (primary) |
High 10-year total cardiovascular risk (≥20%) |
Hazard ratio 0.73 (95% CI, 0.58–0.91) |
17 |
| All-cause death (secondary, confirmatory) |
Overall trial population |
Hazard ratio 0.80 (95% CI, 0.67–0.95) |
— |
| All-cause death (secondary, confirmatory) |
High 10-year total cardiovascular risk (≥20%) |
Hazard ratio 0.71 (95% CI, 0.52–0.95) |
— |
Analysis population: intention-to-treat.
Limitations
Subgroup analyses were not powered for definitive comparisons; some subgroups were not prespecified and had wide confidence intervals. The trial stopped early after benefit, which can overestimate effects. Participants were mostly older, male, and White, limiting generalizability.
Funding
Novo Nordisk A/S; sponsor involvement may introduce bias.
Clinical Application
For adults with type 2 diabetes and chronic kidney disease, consider adding weekly semaglutide to usual care to reduce serious kidney outcomes and likely reduce mortality.