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Polymorphisms in CLEC16A and CIITA at 16p13 are associated with primary adrenal insufficiency.

Authors: Skinningsrud, B  Husebye, ES  Pearce, SH  McDonald, DO  Brandal, K  Wolff, AB  Lovas, K  Egeland, T  Undlien, DE 
Citation: Skinningsrud B, etal., J Clin Endocrinol Metab. 2008 Sep;93(9):3310-7. Epub 2008 Jul 1.
Pubmed: (View Article at PubMed) PMID:18593762
DOI: Full-text: DOI:10.1210/jc.2008-0821

CONTEXT/OBJECTIVES: It is known that different autoimmune diseases often share the same susceptibility genes. In this study we aimed to investigate if loci found associated with common autoimmune diseases in recent genome-wide association studies also could be susceptibility loci for autoimmune Addison's disease (primary adrenal insufficiency). DESIGN/PATIENTS: A total of 139 tagging single nucleotide polymorphisms (SNPs) in 11 candidate genes (IL2, IL21, IL2RA, CLEC2D, CD69, ERBB3, PTPN11, SH2B3, CLEC16A, CIITA, and PTPN2) were genotyped in a case/control study design consisting of Norwegian Addison's disease patients (n = 332) and Norwegian healthy control individuals (n = 1029). Five SNPs were subsequently selected for analysis in a United Kingdom sample set consisting of Addison's disease patients (n = 210) and controls (n = 191). RESULTS: Polymorphisms in CLEC16A and CIITA remained significantly associated with Addison's disease in the Norwegian sample set at the 0.05 level, even after correction for multiple testing. CLEC16A and CIITA are both located at 16p13, but linkage disequilibrium patterns and logistical regression analyses suggest that SNPs in these two genes are independently associated with Addison's disease. We were not able to confirm these associations in the United Kingdom material, however, this may well be due to the limited sample size and lack of statistical power. CONCLUSION: Two alleles at 16p13 are independently associated with the risk of Addison's disease in the Norwegian population, suggesting this chromosomal region to harbor common autoimmunity gene(s), CLEC16A and CIITA being possible independent candidates.

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CRRD Object Information
CRRD ID: 5491177
Created: 2011-09-29
Species: All species
Last Modified: 2011-09-29
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.