Diabetes complications

Peri-renal and renal sinus fat accumulation and diabetic kidney disease in type 2 diabetes: A Japanese cohort study

Diabetes Res Clin PractPublished Prospective cohort study

Main finding · DKDResult — go to the resultHazard ratio 1.96 95 % CI 1.14–3.39

Authors' conclusion

The findings demonstrate that renal fat measure, particularly RSFVI, provides incremental predictive value independent of conventional DKD risk variables, suggesting that local renal fat may be a target for early DKD detection and intervention in people with T2D.

Study context

Population
Diabetic kidney disease (DKD)-free Japanese adults with T2D; mean age 58 years, 52.6 % male, median diabetes duration 5 years, body mass index (BMI) 25.4 kg/m²DKD-free
Participants
190 adults
Exposure
Tertiles of renal fat indices vs BMI, visceral fat area (VFA) and subcutaneous fat area (SFA) for predicting DKD
Outcome
Development of DKD
Follow-up
median 8.5-year follow-up
Methodological details15-year cohort, CT-measured abdominal and renal fat, tertiles of five adiposity indices
  • 15-year cohort
  • CT-measured abdominal and renal fat
  • Tertiles of five adiposity indices

Main finding

DKD

Hazard ratio

1.96

95 % CI 1.14–3.39

P = 0.016

Tertiles of renal fat indices (PRFVI, RSFVI)vs BMI, VFA and SFA for predicting DKD
HR 1.96 (95 % CI 1.14–3.39); P = 0.016

As reported in the abstract

Developed DKD
53.7 %
Renal sinus fat volume index (RSFVI) best predictive value for DKD among all indices (AUC)
0.769

Observational data: associations, not effects.

Further findings

Correlates of renal fat indices

Peri-renal fat volume index (PRFVI) correlated with BMI, whereas RSFVI correlated with aging

Original publication

Peri-renal and renal sinus fat accumulation and diabetic kidney disease in type 2 diabetes: A Japanese cohort study. Diabetes Res Clin Pract. Published 25 December 2025. doi:10.1016/j.diabres.2025.113074

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