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SNP in the genome-wide association study hotspot on chromosome 9p21 confers susceptibility to diabetic nephropathy in type 1 diabetes

In English

Författare

  • E. Fagerholm
  • Emma Ahlqvist
  • C. Forsblom
  • N. Sandholm
  • A. Syreeni
  • M. Parkkonen
  • A. J. McKnight
  • L. Tarnow
  • A. P. Maxwell
  • H. -H. Parving
  • Leif Groop
  • P. -H. Groop
Visa allt

Summary, in English

Parental type 2 diabetes mellitus increases the risk of diabetic nephropathy in offspring with type 1 diabetes mellitus. Several single nucleotide polymorphisms (SNPs) that predispose to type 2 diabetes mellitus have recently been identified. It is, however, not known whether such SNPs also confer susceptibility to diabetic nephropathy in patients with type 1 diabetes mellitus. We genotyped nine SNPs associated with type 2 diabetes mellitus in genome-wide association studies in the Finnish population, and tested for their association with diabetic nephropathy as well as with severe retinopathy and cardiovascular disease in 2,963 patients with type 1 diabetes mellitus. Replication of significant SNPs was sought in 2,980 patients from three other cohorts. In the discovery cohort, rs10811661 near gene CDKN2A/B was associated with diabetic nephropathy. The association remained after robust Bonferroni correction for the total number of tests performed in this study (OR 1.33 [95% CI 1.14, 1.56], p = 0.00045, p (36tests) = 0.016). In the meta-analysis, the combined result for diabetic nephropathy was significant, with a fixed effects p value of 0.011 (OR 1.15 [95% CI 1.02, 1.29]). The association was particularly strong when patients with end-stage renal disease were compared with controls (OR 1.35 [95% CI 1.13, 1.60], p = 0.00038). The same SNP was also associated with severe retinopathy (OR 1.37 [95% CI 1.10, 1.69] p = 0.0040), but the association did not remain after Bonferroni correction (p (36tests) = 0.14). None of the other selected SNPs was associated with nephropathy, severe retinopathy or cardiovascular disease. A SNP predisposing to type 2 diabetes mellitus, rs10811661 near CDKN2A/B, is associated with diabetic nephropathy in patients with type 1 diabetes mellitus.

Publiceringsår

2012

Språk

Engelska

Sidor

2386-2393

Publikation/Tidskrift/Serie

Diabetologia

Volym

55

Issue

9

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Endocrinology and Diabetes

Nyckelord

  • CDKN2A
  • Diabetic nephropathy
  • Genetics
  • rs10811661
  • Type 1 diabetes
  • mellitus
  • Type 2 diabetes mellitus

Status

Published

Forskningsgrupp

  • Genomics, Diabetes and Endocrinology

ISBN/ISSN/Övrigt

  • ISSN: 1432-0428