Genome-Wide Association Scan for Diabetic Nephropathy Susceptibility Genes in Type 1 Diabetes

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Genome-Wide Association Scan for Diabetic Nephropathy Susceptibility Genes in Type 1 Diabetes

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Title: Genome-Wide Association Scan for Diabetic Nephropathy Susceptibility Genes in Type 1 Diabetes
Author: Poznik, G. David; Mychaleckyj, Josyf C.; Barati, Michelle T.; Klein, Jon B.; Ng, Daniel P.K.; Placha, Grzegorz; Canani, Luis H.; Bochenski, Jacek; Waggott, Daryl; Merchant, Michael L.; Mirea, Lucia; Wanic, Krzysztof; Katavetin, Pisut; Kure, Masahiko; Wolkow, Pawel; Dunn, Jonathon S.; Smiles, Adam; Boright, Andrew P.; Bull, Shelley B.; Rich, Stephen S.; Warram, James H.; Pezzolesi, Marcus Guy; Paterson, Andrew D.; Krolewski, Bozena Krystyna; DCCT/EDIC Research Group; Krolewski, Andrzej Stefan; Walker, William H.; Doria, Alessandro; Rogus, John Joseph

Note: Order does not necessarily reflect citation order of authors.

Citation: Pezzolesi, Marcus G., G. David Poznik, Josyf C. Mychaleckyj, Andrew D. Paterson, Michelle T. Barati, Jon B. Klein, Daniel P.K. Ng, et al. 2009. Genome-wide association scan for diabetic nephropathy susceptibility genes in type 1 diabetes. Diabetes 58(6): 1403-1410.
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Abstract: OBJECTIVE—Despite extensive evidence for genetic susceptibility to diabetic nephropathy, the identification of susceptibility genes and their variants has had limited success. To search for genes that contribute to diabetic nephropathy, a genome-wide association scan was implemented on the Genetics of Kidneys in Diabetes collection. RESEARCH DESIGN AND METHODS—We genotyped 360,000 single nucleotide polymorphisms (SNPs) in 820 case subjects (284 with proteinuria and 536 with end-stage renal disease) and 885 control subjects with type 1 diabetes. Confirmation of implicated SNPs was sought in 1,304 participants of the Diabetes Control and Complications Trial (DCCT)/Epidemiology of Diabetes Interventions and Complications (EDIC) study, a long-term, prospective investigation of the development of diabetes- associated complications. RESULTS—A total of 13 SNPs located in four genomic loci were associated with diabetic nephropathy with P1105. The strongest association was at the FRMD3 (4.1 protein ezrin, radixin, moesin [FERM] domain containing 3) locus (odds ratio [OR]1.45, P5.0107). A strong association was also identified at the CARS (cysteinyl-tRNA synthetase) locus (OR 1.36, P3.1106). Associations between both loci and time to onset of diabetic nephropathy were supported in the DCCT/EDIC study (hazard ratio [HR]1.33, P0.02, and HR1.32, P 0.01, respectively). We demonstrated expression of both FRMD3 and CARS in human kidney. CONCLUSIONS—We identified genetic associations for susceptibility to diabetic nephropathy at two novel candidate loci near the FRMD3 and CARS genes. Their identification implicates previously unsuspected pathways in the pathogenesis of this important late complication of type 1 diabetes.
Published Version: doi:10.2337/db08-1514
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4881556

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