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Nephrol Dial Transplant. 2012 Apr;27(4):1505-11. doi: 10.1093/ndt/gfr522. Epub 2011 Oct 3.

Polymorphisms in MYH9 are associated with diabetic nephropathy in European Americans.

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Program in Molecular Medicine and Translational Science, Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC, USA.



Polymorphisms in the non-muscle myosin IIA gene (MYH9) are associated with focal segmental glomerulosclerosis (FSGS) and non-diabetic end-stage renal disease (ESRD) in African Americans and FSGS in European Americans. We tested for association of single nucleotide polymorphisms (SNPs) in MYH9 with T2DM-ESRD in European Americans; additionally, three APOL1 gene variants were evaluated.


Fifteen MYH9 SNPs and two APOL1 SNPs plus a 6-bp deletion were genotyped in 1963 European Americans, 536 cases with T2DM-ESRD and 1427 non-nephropathy controls (467 with T2DM and 960 without diabetes).


Comparing T2DM-ESRD cases with the 467 T2DM non-nephropathy controls, single variant associations trending toward significance were detected with SNPs rs4821480, rs2032487 and rs4281481 comprising part of the major MYH9 E1 risk haplotype [P-values 0.053-0.055 recessive, odds ratio (OR) 6.08-6.14]. Comparing T2DM-ESRD cases to all 1427 non-nephropathy controls, we confirmed evidence of association in these three SNPs as well as in the fourth E1 SNP (rs3752462) (P-values 0.017-0.035, OR 1.41-3.72). APOL1 G1/G2 nephropathy risk variants were rare in individuals of European American heritage, present in 0.28% of chromosomes in T2DM-ESRD cases and 0.32% of controls.


MYH9 SNPs rs4821480, rs2032487, rs4281481 and rs3752462 are associated with T2DM-ESRD susceptibility in European Americans. The APOL1 risk variants are not present at appreciable frequency in this cohort with T2DM-ESRD. Therefore, polymorphisms in MYH9 appear to influence nephropathy risk in this sample.

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