PMID- 36517108 OWN - NLM STAT- MEDLINE DCOM- 20221216 LR - 20221222 IS - 2052-4897 (Electronic) IS - 2052-4897 (Linking) VI - 10 IP - 6 DP - 2022 Dec TI - Prevalence of non-diabetic kidney disease and inability of clinical predictors to differentiate it from diabetic kidney disease: results from a prospectively performed renal biopsy study. LID - 10.1136/bmjdrc-2022-003058 [doi] LID - e003058 AB - INTRODUCTION: Renal involvement in type 2 diabetes mellitus (T2DM) may be due to diabetes (diabetic kidney disease (DKD)), causes other than diabetes (non-diabetic kidney disease (NDKD)) or overlap of DKD and NDKD (mixed kidney disease group). Prevalence of NDKD and predictive value of clinical or biochemical indicators have been explored in retrospective cohorts with preselection biases warranting the need for prospectively conducted unbiased renal biopsy study. RESEARCH DESIGN AND METHODS: Consecutive subjects aged >18 years with T2DM and renal involvement with estimated glomerular filtration rate of 30-60 mL/min/m(2) and/or albumin:creatinine ratio of >300 mg/g were offered renal biopsy. Prevalence of DKD, NDKD and mixed kidney disease was documented. Clinical/laboratory parameters of subjects were recorded and compared between groups and were tested for ability to predict histopathological diagnosis. RESULTS: We screened 6247 subjects with T2DM of which 869 fulfilled inclusion criteria for biopsy. Of the 869 subjects, biopsy was feasible in 818 subjects. Out of 818, we recruited first 110 subjects who agreed to undergo renal biopsy. Among those 110 subjects, 73 (66.4%) had DKD; 20 (18.2 %) had NDKD; and 17 (15.4 %) had mixed kidney disease. Subjects with NDKD as compared with DKD had shorter duration of diabetes (p<0.001), absence of retinopathy (p<0.001) and absence of neuropathy (p<0.001). Logistic regression revealed that only presence of retinopathy and duration of diabetes were statistically significant to predict histopathological diagnosis of DKD. 30% of DKD did not have retinopathy, thereby limiting the utility of the same as a discriminator. Use of traditional indicators of biopsy would have indicated a need for renal biopsy in 87.2% of subjects, though 64.5% of the subjects had DKD, who would not have benefitted from biopsy. CONCLUSION: NDKD and mixed kidney disease in T2DM with renal involvement are very common and traditionally used parameters to select biopsies are of limited value in clinical decision making. CI - (c) Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. FAU - Basu, Madhurima AU - Basu M AUID- ORCID: 0000-0003-4693-5795 AD - Endocrinology and Metabolism, Institute of Postgraduate Medical Education and Research, Kolkata, India. FAU - Pulai, Smartya AU - Pulai S AD - Nephrology, Institute of Postgraduate Medical Education and Research, Kolkata, India. FAU - Neogi, Subhasis AU - Neogi S AD - Endocrinology and Metabolism, Institute of Postgraduate Medical Education and Research, Kolkata, India. FAU - Banerjee, Mainak AU - Banerjee M AD - Endocrinology and Metabolism, Institute of Postgraduate Medical Education and Research, Kolkata, India. FAU - Bhattacharyya, Nitai P AU - Bhattacharyya NP AD - Endocrinology and Metabolism, Institute of Postgraduate Medical Education and Research, Kolkata, India. FAU - Sengupta, Sanghamitra AU - Sengupta S AD - Biochemistry, University of Calcutta, Kolkata, West Bengal, India. FAU - Mukhopadhyay, Pradip AU - Mukhopadhyay P AUID- ORCID: 0000-0002-4580-9589 AD - Endocrinology and Metabolism, Institute of Postgraduate Medical Education and Research, Kolkata, India. FAU - Ray Chaudhury, Arpita AU - Ray Chaudhury A AD - Nephrology, Institute of Postgraduate Medical Education and Research, Kolkata, India. FAU - Ghosh, Sujoy AU - Ghosh S AUID- ORCID: 0000-0001-5397-961X AD - Endocrinology and Metabolism, Institute of Postgraduate Medical Education and Research, Kolkata, India drsujoyghosh2000@gmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - BMJ Open Diabetes Res Care JT - BMJ open diabetes research & care JID - 101641391 SB - IM MH - Humans MH - *Diabetes Mellitus, Type 2/complications/diagnosis/epidemiology MH - Prevalence MH - Retrospective Studies MH - *Diabetic Nephropathies/diagnosis/epidemiology/etiology MH - Biopsy/adverse effects MH - *Retinal Diseases/complications PMC - PMC9756194 OTO - NOTNLM OT - Diabetes Mellitus, Type 2 OT - Kidney Diseases COIS- Competing interests: None declared. EDAT- 2022/12/15 06:00 MHDA- 2022/12/17 06:00 PMCR- 2022/12/14 CRDT- 2022/12/14 20:53 PHST- 2022/07/27 00:00 [received] PHST- 2022/11/22 00:00 [accepted] PHST- 2022/12/14 20:53 [entrez] PHST- 2022/12/15 06:00 [pubmed] PHST- 2022/12/17 06:00 [medline] PHST- 2022/12/14 00:00 [pmc-release] AID - 10/6/e003058 [pii] AID - bmjdrc-2022-003058 [pii] AID - 10.1136/bmjdrc-2022-003058 [doi] PST - ppublish SO - BMJ Open Diabetes Res Care. 2022 Dec;10(6):e003058. doi: 10.1136/bmjdrc-2022-003058.