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Background and Aims Diabetic kidney disease (DKD) is the most common cause of end-stage renal disease, but the decline in kidney function varies considerably between chronic kidney diseases (CKD), and determinants of renal function loss, early in the course of the disease, are still a matter of debate. Method We retrospectively examined the renal outcome at 31 July 2017 of 309 CKD patients (age 59.1 (50.1-68.6) years; 60% male; eGFR 32.7 (21.7-44.8) mL/min) admitted in our hospital during January 2007-December 2012 with a median follow up time of 7.2 (95%CI, 6.8-7.6) years. Only patients who had at least 3 admissions and who were alive during the study period were included. CKD was defined as the presence of an eGFR &amp;lt;60ml/min/1.73m2 or the presence of albuminuria &amp;gt;30mg/g creatinine for more than 3 months. The primary endpoint was renal survival defined as renal replacement therapy (RRT) initiation. Factors affecting renal survival were evaluated in a Cox proportional hazard model. Results DKD (24%), glomerular (GN, 24%), tubulo-interstitial (TIN, 27%) and vascular nephropathies (VN, 25%) were the causes of CKD. Patients with DKD (66.8 (56.5-72.2) years) and VN (68.5 (59.7-76.2) years) were older than those with GN (50.3 (37.4-59.0) years) and TIN (55.6 (45.8-61.8) years). Moreover, the highest cardiovascular comorbidity score was found in patients with VN and DKD (p&amp;lt;0.001). Median eGFR decline was -1.23 ( -3.39 – 0.35) mL/min/year; 29% of the patients had CKD progression of &amp;gt;3mL/min/year and 14% had rapid progression (&amp;gt;5mL/min/year). Patients with GN had the lowest eGFR (26.8 (19.1-38.9) versus DKD 36.2 (23.4-47.7), VN 34.9 (22.4-51.0), TIN 32.4 (21.8-44.8) mL/min, p&amp;lt;0.001), the fastest eGFR decline (-3.1 versus DKD -1.9, VN -1, TIN -1,2 mL/min/year, p 0.5) and the highest proteinuria (2.7 versus DKD 1.4, VN 0.4, TIN 0.6 g/24h, p&amp;lt;0.001). During follow up, 29% of the studied patients started RRT; mean renal survival time for the entire cohort was 7.4 (95%CI, 7.0-7.8) years. CKD cause (versus DKD p=0.04, Figure 1), lower eGFR (HR 0.89 (95%CI, 0.85-0.93)), elevated albuminuria (HR 1.4 (95%CI, 1.2-1.7)), higher total serum cholesterol (HR 1.00 (95%CI, 1.00-1.01)) and elevated mean arterial blood pressure (HR 1.03 (95%CI, 1.00-1.06)) were associated with RRT initiation in the Cox regression model. Conclusion Patients with DKD and VN had similar poorer renal survival as compared with GN and TIN. Earlier referral to the diabetic renal clinic and intensive management of the modifiable risk factors (albuminuria, hypercholesterolemia, hypertention) are necessary to retard progression of CKD and, subsequently, prolong renal survival.

P0279DIABETIC KIDNEY DISEASE VERSUS CHRONIC KIDNEY DISEASE IN ADULTS WITHOUT DIABETES MELLITUS: A RENAL SURVIVAL ANALYSIS