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Serum Concentration of Cystatin C and Risk of End-Stage Renal Disease in Diabetes

Featured Article :. Serum Concentration of Cystatin C and Risk of End-Stage Renal Disease in Diabetes.

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Serum Concentration of Cystatin C and Risk of End-Stage Renal Disease in Diabetes

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  1. Featured Article: Serum Concentration of Cystatin C and Risk of End-Stage Renal Disease in Diabetes Andrzej S. Krolewski, M.D., Ph.D., James H. Warram, M.D., S.C.D., Carol Forsblom, D.M.S.C., Adam M. Smiles, M.S., Lena Thorn, M.D., D.M.S.C., Jan Skupien, M.D., Ph.D., Valma Harjutsalo, Ph.D., Robert Stanton, M.D., John H. Eckfeldt, M.D., Ph.D., Lesley A. Inker, M.D., M.S., F.R.C.P.(C), Per-Henrik Groop, M.D., D.M.S.C. Diabetes Care Volume 35: 2311-2316 November, 2012

  2. STUDY OBJECTIVE • To examine whether predicting end-stage renal disease (ESRD), according to chronic kidney disease (CKD) staging by creatinine-based estimates of the glomerular filtration rate (eGFRcreat), is improved by further staging with serum cystatin C–based estimates (eGFRcyst) Krolewski A et al. Diabetes Care 2012;35:2311-2316

  3. STUDY DESIGN AND METHODS • Patients with diabetes in CKD stages 1–3 were selected from three cohorts: • Two from Joslin Diabetes Center (one with type 1 diabetes [N = 364] and one with type 2 diabetes [N = 402]) • One from the Finnish Diabetic Nephropathy (FinnDiane) Study of type 1 (N = 399) • Baseline serum concentrations of creatinine and cystatin C measured in all patients • Follow-up averaged 8–10 years • Onsets of ESRD (n = 246) and death unrelated to ESRD (n = 159) were ascertained Krolewski A et al. Diabetes Care 2012;35:2311-2316

  4. Krolewski A et al. Diabetes Care 2012;35:2311-2316

  5. RESULTS • Patients given a higher stage by eGFRcyst than eGFRcreat had significantly higher risk of ESRD than patients with concordant staging in all three cohorts (hazard ratio 2.3 [95% CI 1.8–3.1]) • Patients at a lower stage by eGFRcyst than by eGFRcreat had lower risk than patients with concordant staging (0.30 [0.13–0.68]) • Deaths unrelated to ESRD followed the same pattern, but differences were not as large Krolewski A et al. Diabetes Care 2012;35:2311-2316

  6. Krolewski A et al. Diabetes Care 2012;35:2311-2316

  7. Krolewski A et al. Diabetes Care 2012;35:2311-2316

  8. Krolewski A et al. Diabetes Care 2012;35:2311-2316

  9. Krolewski A et al. Diabetes Care 2012;35:2311-2316

  10. CONCLUSIONS • CKD staging based on eGFRcyst significantly improves ESRD risk stratification based on eGFRcreat Krolewski A et al. Diabetes Care 2012;35:2311-2316

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