Horm Metab Res 2016; 48(04): 232-237
DOI: 10.1055/s-0035-1559622
Endocrine Care
© Georg Thieme Verlag KG Stuttgart · New York

HLA Class II Differentiates Between Thyroid and Polyglandular Autoimmunity

S. Barkia Beradhi
1   Molecular Thyroid Research Laboratory, Johannes Gutenberg University (JGU) Medical Center, Mainz, Germany
,
B. K. Flesch
2   Laboratory of Immunogenetics/HLA (BKF), German Red Cross Blood Service West, Bad Kreuznach, Germany
,
M. P. Hansen
1   Molecular Thyroid Research Laboratory, Johannes Gutenberg University (JGU) Medical Center, Mainz, Germany
,
N. Matheis
1   Molecular Thyroid Research Laboratory, Johannes Gutenberg University (JGU) Medical Center, Mainz, Germany
,
G. J. Kahaly
1   Molecular Thyroid Research Laboratory, Johannes Gutenberg University (JGU) Medical Center, Mainz, Germany
› Author Affiliations
Further Information

Publication History

received 27 April 2015

accepted 30 June 2015

Publication Date:
28 August 2015 (online)

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Abstract

The HLA class II genes are susceptibility genes for autoimmune endocrine diseases; however, scarce data are available pertaining to the determinants of genetic susceptibility to polyglandular autoimmunity (PGA). A total of 300 consecutive and unselected patients with either PGA or monoglandular autoimmune thyroid disease (AITD) and 100 healthy control subjects were genotyped for the HLA class II DRB1, -DQA1, and -DQB1 alleles. Compared to patients with AITD and controls, the HLA-DRB1*03 (pc =0.001), *04 (pc<0.001), -DQA1*03 (pc<0.001), and -DQB1*02 (pc =0.001) alleles were increased in patients with PGA. When dividing patients with Hashimoto’s thyroiditis (HT) into those with PGA (PGA-HT) vs. those with HT as monoglandular disease, significant differences for the DRB1*03 (pc=0.001) and DQA1*03 (pc=0.001) alleles were observed. In contrast, the DQB1*02 allele was more prevalent in PGA patients with Graves’ disease (PGA-GD) vs. those with monoglandular GD (pc=0.002). The HLA-DRB1*15 (pc =0.001), -DQA1*01 (pc =0.001), -DQB1*05 (pc =0.002) and -DQB1*06 (pc =0.002) alleles were significantly less present in PGA compared to monoglandular AITD and controls, thus indicating protective alleles. The HLA class II alleles differentiate between mono- and polyglandular autoimmunity in patients with autoimmune thyroid disease.