TY - JOUR
T1 - The PPARγ2 Pro12Ala variant predicts ESRD and mortality in patients with type 1 diabetes and diabetic nephropathy
AU - Jorsal, A.
AU - Tarnow, L.
AU - Lajer, M.
AU - Ek, J.
AU - Hansen, T.
AU - Pedersen, O.
AU - Parving, H. H.
PY - 2008/7/1
Y1 - 2008/7/1
N2 - The Pro12Ala polymorphism in the peroxisome proliferator-activated receptor-γ2 gene is suggested to associate with diabetic nephropathy and cardiovascular disease in type 2 diabetes. The aim of this study was to investigate the polymorphism in relation to diabetic nephropathy, end-stage renal disease (ESRD), mortality and cardiovascular (CVD) events in type 1 diabetic patients. This prospective observational follow-up study included 415 type 1 diabetic patients with overt diabetic nephropathy (252 men; age 42.2 ± 10.4 years [mean ± SD], duration of diabetes 28.3 ± 8.8 years, GFR 66 ± 8.8 ml/min) and 428 patients with longstanding type 1 diabetes and persistent normoalbuminuria (230 men; age 45.4 ± 11.6 years, duration of diabetes 27.8 ± 10.1 years). Follow-up: 8.1 (0.0-12.8) years (median [range]). There where no significant differences between cases and controls in genotype (p = 0.51) or allele frequencies (p = 0.25). Cox regression analysis revealed a covariate-adjusted hazard ratio (HR) for all-cause mortality in patients with the Ala/Ala genotype of 2.44 (1.23-4.84). The Pro12Ala polymorphism did not predict CVD events. However, the Ala/Ala genotype predicts ESRD (covariate-adjusted HR 2.60 (1.11-6.07)). Furthermore, Carriers of the Ala-allele had a higher rate of decline in GFR (p = 0.040). In conclusion, the Pro12Ala polymorphism is not associated with type 1 diabetic nephropathy. The Ala-allele is associated with enhanced decline in GFR and predicts ESRD and all-cause mortality in patients with nephropathy.
AB - The Pro12Ala polymorphism in the peroxisome proliferator-activated receptor-γ2 gene is suggested to associate with diabetic nephropathy and cardiovascular disease in type 2 diabetes. The aim of this study was to investigate the polymorphism in relation to diabetic nephropathy, end-stage renal disease (ESRD), mortality and cardiovascular (CVD) events in type 1 diabetic patients. This prospective observational follow-up study included 415 type 1 diabetic patients with overt diabetic nephropathy (252 men; age 42.2 ± 10.4 years [mean ± SD], duration of diabetes 28.3 ± 8.8 years, GFR 66 ± 8.8 ml/min) and 428 patients with longstanding type 1 diabetes and persistent normoalbuminuria (230 men; age 45.4 ± 11.6 years, duration of diabetes 27.8 ± 10.1 years). Follow-up: 8.1 (0.0-12.8) years (median [range]). There where no significant differences between cases and controls in genotype (p = 0.51) or allele frequencies (p = 0.25). Cox regression analysis revealed a covariate-adjusted hazard ratio (HR) for all-cause mortality in patients with the Ala/Ala genotype of 2.44 (1.23-4.84). The Pro12Ala polymorphism did not predict CVD events. However, the Ala/Ala genotype predicts ESRD (covariate-adjusted HR 2.60 (1.11-6.07)). Furthermore, Carriers of the Ala-allele had a higher rate of decline in GFR (p = 0.040). In conclusion, the Pro12Ala polymorphism is not associated with type 1 diabetic nephropathy. The Ala-allele is associated with enhanced decline in GFR and predicts ESRD and all-cause mortality in patients with nephropathy.
KW - Cardiovascular disease
KW - Diabetes
KW - Diabetic nephropathy
KW - End-stage renal disease
KW - Genetics
KW - Glomerular filtration rate
KW - Mortality
KW - Pro12Ala
UR - http://www.scopus.com/inward/record.url?scp=44649200427&partnerID=8YFLogxK
U2 - 10.1016/j.ymgme.2008.03.014
DO - 10.1016/j.ymgme.2008.03.014
M3 - Article
C2 - 18467141
AN - SCOPUS:44649200427
VL - 94
SP - 347
EP - 351
JO - Molecular Genetics and Metabolism
JF - Molecular Genetics and Metabolism
SN - 1096-7192
IS - 3
ER -