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AIRE gene mutations and autoantibodies to interferon omega in patients with chronic hypoparathyroidism without APECED
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2010 (English)In: Clinical Endocrinology, ISSN 0300-0664, E-ISSN 1365-2265, Vol. 73, no 5, 630-636 p.Article in journal (Refereed) Published
Abstract [en]

Objective To assess autoimmune regulator (AIRE) gene mutations, class II HLA haplotypes, and organ- or non-organ-specific autoantibodies in patients with chronic hypoparathyroidism (CH) without associated Addison's disease (AD) or chronic candidiasis (CC). Patients and Measurements Twenty-four patients who had CH without AD or CC were included in the study. AIRE gene mutations in all 14 exons were studied using PCR in 24 patients, 105 healthy controls and 15 first-degree relatives of CH patients with AIRE mutations. Human leucocyte antigens (HLA) were determined for all 24 patients and 105 healthy controls. Autoantibodies to a range of antigens including NACHT leucine-rich-repeat protein-5 (NALP5) and interferon omega (IFN omega) were tested in all 24 patients. Results AIRE gene mutations were found in 6 of 24 (25%) patients, all females, and this was significantly higher (P < 0.001) compared with AIRE mutations found in healthy controls (2/105). Three patients (12.5%) had homozygous AIRE mutations characteristic of Autoimmune-Poly-Endocrinopathy-Candidiasis-Ectodermal-Dystrophy and all three were also positive for IFN omega-autoantibodies. Three patients (12.5%) had heterozygous AIRE mutations; two of these were novel mutations. One of the patients with heterozygous AIRE mutations was positive for both NACHT leucine-rich-repeat protein 5 and IFN omega autoantibodies. Heterozygous AIRE mutations were found in 10 of 15 first-degree relatives of CH patients with AIRE mutations, although none was affected by CH. Class II HLA haplotypes were not statistically different in patients with CH compared to healthy controls. Conclusions Analysis of AIRE gene mutations together with serum autoantibody profile should be helpful in the assessment of patients with CH, in particular young women with associated autoimmune diseases.

Place, publisher, year, edition, pages
2010. Vol. 73, no 5, 630-636 p.
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Medical and Health Sciences
URN: urn:nbn:se:uu:diva-134557DOI: 10.1111/j.1365-2265.2010.03862.xISI: 000282635000011OAI: oai:DiVA.org:uu-134557DiVA: diva2:372939
Available from: 2010-11-29 Created: 2010-11-29 Last updated: 2011-05-23Bibliographically approved

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Kämpe, Olle
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