PMID- 27459536 OWN - NLM STAT- MEDLINE DCOM- 20170630 LR - 20221207 IS - 1945-7197 (Electronic) IS - 0021-972X (Linking) VI - 101 IP - 10 DP - 2016 Oct TI - Urinary Haptoglobin Predicts Rapid Renal Function Decline in Asians With Type 2 Diabetes and Early Kidney Disease. PG - 3794-3802 AB - CONTEXT: A recent study suggested that urinary haptoglobin may be a novel biomarker to improve predictive performance of albuminuria in type 2 diabetes mellitus (T2DM). However, the finding has not been externally validated. OBJECTIVE: The objective of the study was to evaluate whether urinary haptoglobin improves predictive performance of albuminuria in Asian T2DM with an estimated glomerular filtration rate (eGFR) of 30 mL/min per 1.73 m(2) or greater. DESIGN AND PARTICIPANTS: This was a prospective study with 269 T2DM nonprogressors (eGFR changes 0.2 [-0.7 to 1.0] mL/min per 1.73 m(2) per y) and 153 T2DM progressors (eGFR decline -7.1 [-10.6 to -5.1] mL/min per 1.73 m(2) per y) included. MAIN OUTCOME: The main outcome was an eGFR decline of 3 mL/min per 1.73 m(2) or greater per year by trajectory slope. RESULTS: Urinary haptoglobin level increased 11-fold in progressors as compared with nonprogressors at baseline. In comparison with subjects in the lowest quartile, those with haptoglobin in the third and fourth quartiles had 2.25- (1.11-4.59) and 5.41 (2.63-11.1)-fold increased odds for renal progression, whereas those with an albuminuria level in the third and fourth quartiles had 2.53- (1.17-5.51) and 9.01 (4.00-20.5)-fold increased odds. Notably, urinary haptoglobin predicted renal progression independent of albuminuria. Addition of haptoglobin significantly improved the predictive performance of albuminuria beyond traditional risk factors as reflected by a significant increase in the net reclassification index and integrated discrimination index. In the chronic kidney disease stage 3 subpopulation, urinary haptoglobin outperformed albuminuria for the prediction of rapid renal function decline. CONCLUSIONS: Our data confirmed that urinary haptoglobin may improve the predictive performance of albuminuria for renal progression in Asians with T2DM. Moreover, it may potentially outperform albuminuria for the prediction of rapid renal function decline in the T2DM chronic kidney disease stage 3 subpopulation. FAU - Liu, Jian-Jun AU - Liu JJ AD - Clinical Research Unit (J.-J.L., S.L., M.D.S.W., R.L.G.) and Diabetes Centre (S.C.L.), Khoo Teck Puat Hospital, Singapore 768828. FAU - Liu, Sylvia AU - Liu S AD - Clinical Research Unit (J.-J.L., S.L., M.D.S.W., R.L.G.) and Diabetes Centre (S.C.L.), Khoo Teck Puat Hospital, Singapore 768828. FAU - Wong, Melvin D S AU - Wong MD AD - Clinical Research Unit (J.-J.L., S.L., M.D.S.W., R.L.G.) and Diabetes Centre (S.C.L.), Khoo Teck Puat Hospital, Singapore 768828. FAU - Gurung, Resham Lal AU - Gurung RL AD - Clinical Research Unit (J.-J.L., S.L., M.D.S.W., R.L.G.) and Diabetes Centre (S.C.L.), Khoo Teck Puat Hospital, Singapore 768828. FAU - Lim, Su Chi AU - Lim SC AD - Clinical Research Unit (J.-J.L., S.L., M.D.S.W., R.L.G.) and Diabetes Centre (S.C.L.), Khoo Teck Puat Hospital, Singapore 768828. LA - eng PT - Journal Article DEP - 20160726 PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 RN - 0 (Biomarkers) RN - 0 (Haptoglobins) SB - IM MH - Adult MH - Aged MH - Albuminuria/*urine MH - Asian People/*ethnology MH - Biomarkers/urine MH - Diabetes Mellitus, Type 2/complications/ethnology/*urine MH - Diabetic Nephropathies/ethnology/etiology/*urine MH - Disease Progression MH - Female MH - *Glomerular Filtration Rate MH - Haptoglobins/*urine MH - Humans MH - Male MH - Middle Aged MH - Predictive Value of Tests MH - Singapore/ethnology EDAT- 2016/07/28 06:00 MHDA- 2017/07/01 06:00 CRDT- 2016/07/27 06:00 PHST- 2016/07/28 06:00 [pubmed] PHST- 2017/07/01 06:00 [medline] PHST- 2016/07/27 06:00 [entrez] AID - 10.1210/jc.2016-2094 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 2016 Oct;101(10):3794-3802. doi: 10.1210/jc.2016-2094. Epub 2016 Jul 26.