Allergic and autoimmune disorders in families with selective IgA deficiency

作者：Erkocoglu Mustafa^*; Metin Ayse; Kaya Aysenur; Ozcan Celal; Akan Aysegul; Civelek Ersoy; Capanoglu Murat; Ginis Tayfur; Kocabas Can Naci

来源：Turkish Journal of Medical Sciences, 2017, 47(2): 592-598.

DOI：10.3906/sag-1605-50

• allergy
• autoimmunity
• children
• first degree relative
• selective IgA deficiency

Background/aim: IgA deficiency is the most common human primary immunodeficiency. The prevalence of allergic disorders and autoimmunity is thought to be increased in selective IgA deficiency (sIgAD). However, it is currently unclear if these disorders coincide within these families. We aimed to evaluate the frequency of allergic and autoimmune disorders in children with sIgAD and their first-degree relatives (FDRs).
Materials and methods: The study included 81 children diagnosed with sIgAD and 274 of their FDRs. The presence of allergic and autoimmune disorders was evaluated and serum antithyroglobulin and antithyroid peroxidase levels were measured in both patients and their first-degree relatives.
Results: The mean age of the patients was 9.9 +/- 3.9 years. Among the patients with sIgAD, 45.7% of them had at least one allergic disorder and 17.3% of them had at least one autoimmune disorder. The frequencies of asthma, allergic rhinitis, and eczema in the FDRs of sIgAD patients were 10.9%, 9.1%, and 7.7%, respectively. Among their FDRs, 14.6% had autoimmunity, compared to an estimate of 5% in the general population.
Conclusion: Increased frequency of allergic and autoimmune disorders in patients with sIgAD and their FDRs suggests a possible common predisposing genetic component for sIgAD and autoimmunity in these families.

• 出版日期2017