Diabetes complications

Kidney outcomes of SGLT2 inhibitors among older patients with diabetic kidney disease in real-world clinical practice: the Japan Chronic Kidney Disease Database Ex

BMJ Open Diabetes Res CarePublished Retrospective cohort study

Main finding · Mean annual rate of eGFR changeResult — go to the resultDifference in the rate of eGFR decline 0.99 mL/min/1.73 m²/year 95% CI 0.5–1.38

Authors' conclusion

The benefits of SGLT2 inhibitors on renal outcomes are also applicable to older patients with DKD aged≥75 years.

Study context

Population
Patients with diabetic kidney disease (DKD) aged ≥75 years, with or without proteinuria, Japan Chronic Kidney Disease Database; mean age 77.7 years, mean estimated glomerular filtration rate (eGFR) 59.3 mL/min/1.73m2, proteinuria 230 (33.0%)matched cohort
Participants
348 vs 348
Exposure
SGLT2i initiation vs other glucose-lowering drugs
  • SGLT2 inhibitorsn = 348
  • Other glucose-lowering drugsn = 348reference
Outcome
Rate of eGFR decline
Follow-up
Throughout
Methodological detailspropensity-score matched, 1:1 matching, real-world
  • Propensity-score matched
  • 1:1 matching
  • Real-world

Main finding

Mean annual rate of eGFR change

Difference in the rate of eGFR decline

0.99 mL/min/1.73 m²/year

95% CI 0.5–1.38

P < 0.001

Change by group

SGLT2i

−0.80

mean · 95% CI −1.05–-0.54 · mL/min/1.73 m²/year

Other glucose-lowering drugs

−1.78

mean · 95% CI −2.08–-1.49 · mL/min/1.73 m²/year

As reported in the abstract

Observational data: associations, not effects.

Secondary outcomes

OutcomeOther glucose-lowering drugsHR (95% CI)
Composite of 40% eGFR reduction or progression to end-stage kidney diseaseSGLT2ivs Other glucose-lowering drugs57 events0.64 (0.42–0.97)
  • Composite of 40% eGFR reduction or progression to end-stage kidney disease: SGLT2i 38 events

Interaction with proteinuria

No evidence of an interaction between SGLT2i initiation and proteinuria

Original publication

Kidney outcomes of SGLT2 inhibitors among older patients with diabetic kidney disease in real-world clinical practice: the Japan Chronic Kidney Disease Database Ex. BMJ Open Diabetes Res Care. Published 30 May 2024. doi:10.1136/bmjdrc-2024-004115

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