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Published on: May 2, 2025
A real-world study on SGLT2 inhibitors and diabetic kidney disease progression
Allen Yan Lun Liu1, Serena Low2, Ester Yeoh3
1Department of General Medicine, Khoo Teck Puat Hospital, Singapore.
Background:
Randomized controlled trials have demonstrated the benefits of sodium-glucose cotransporter 2 inhibitors (SGLT2is) in people with type 2 diabetes mellitus (T2DM) and chronic kidney disease (CKD). However, real-world data on CKD progression and the development of end-stage kidney disease (ESKD) remains scarce. Our aim was to study renal outcomes of people with diabetic kidney disease (DKD) using SGLT2is in a highly prevalent DKD population.
Methods:
Between 2016 and 2019 we recruited T2DM patients in the renal and diabetic clinics in a regional hospital in Singapore. Patients prescribed SGLT2is were compared with those on standard anti-diabetic and renoprotective treatment. The outcome measures were CKD progression [a ≥25% decrease from baseline and worsening of estimated glomerular filtration rate (eGFR) categories according to the Kidney Disease: Improving Global Outcomes guidelines] and ESKD (eGFR <15 mL/min/1.73 m2).
Results:
We analysed a total of 4446 subjects; 1598 were on SGLT2is. There was a significant reduction in CKD progression {hazard ratio [HR] 0.60 [95% confidence interval (CI) 0.49-0.74]} with SGLT2is. The HR for eGFR ≥45 mL/min/1.73 m2 and 15-44 mL/min/1.73 m2 was 0.60 (95% CI 0.47-0.76) and 0.43 (95% CI 0.23-0.66), respectively. There was also a reduction in risk for developing ESKD for the entire cohort [HR 0.33 (95% CI 0.17-0.65)] and eGFR 15-44 mL/min/1.73 m2 [HR 0.24 (95% CI 0.09-0.66)]. Compared with canagliflozin and dapagliflozin, empagliflozin showed a sustained risk reduction of renal outcomes across CKD stages 1-4.
Conclusions:
This real-world study demonstrates the benefits of SGLT2is on CKD progression and ESKD. The effect is more pronounced in moderate to advanced CKD patients.
Insights
Sodium-glucose cotransporter 2 inhibitors (SGLT2is) significantly reduce chronic kidney disease (CKD) progression and end-stage kidney disease (ESKD) in type 2 diabetes mellitus (T2DM) patients. These benefits are more pronounced in individuals with moderate to advanced CKD.
Area of Science:
- Nephrology
- Endocrinology
- Pharmacology
Background:
- Randomized controlled trials confirm sodium-glucose cotransporter 2 inhibitors (SGLT2is) benefits for type 2 diabetes mellitus (T2DM) and chronic kidney disease (CKD).
- Real-world data on SGLT2is' impact on CKD progression and end-stage kidney disease (ESKD) development is limited.
- Diabetic kidney disease (DKD) is highly prevalent, necessitating real-world outcome studies.
Purpose of the Study:
- To evaluate the renal outcomes of patients with diabetic kidney disease (DKD) treated with SGLT2 inhibitors.
- To assess the effect of SGLT2 inhibitors on CKD progression and the development of ESKD in a real-world setting.
- To compare SGLT2 inhibitors with standard treatments for DKD.
Main Methods:
- A cohort of T2DM patients from renal and diabetic clinics in Singapore (2016-2019) was analyzed.
- Patients receiving SGLT2 inhibitors were compared to those on standard anti-diabetic and renoprotective therapy.
- Primary outcomes included CKD progression (≥25% eGFR decrease) and ESKD (eGFR <15 mL/min/1.73 m²).
Main Results:
- A total of 4446 patients were analyzed, with 1598 on SGLT2 inhibitors.
- SGLT2 inhibitors significantly reduced CKD progression (HR 0.60) and ESKD risk (HR 0.33).
- Empagliflozin demonstrated sustained renal risk reduction across CKD stages 1-4 compared to other SGLT2is.
Conclusions:
- This real-world study confirms the renal protective benefits of SGLT2 inhibitors in DKD patients.
- SGLT2 inhibitors significantly slow CKD progression and reduce the risk of ESKD.
- The renoprotective effects of SGLT2 inhibitors are more pronounced in patients with moderate to advanced CKD.
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