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Related Experiment Video

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Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis

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Selective IgA deficiency in autoimmune diseases.

Ning Wang¹, Nan Shen, Timothy J Vyse

¹Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institutet at Karolinska University Hospital Huddinge, Stockholm, Sweden.

Molecular Medicine (Cambridge, Mass.)

|August 10, 2011

Summary

Selective immunoglobulin A deficiency (IgAD), a common immunodeficiency, is linked to autoimmune diseases like Graves disease and lupus. Shared genetic factors may predispose individuals to both IgAD and these autoimmune conditions.

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Area of Science:

Immunology
Genetics
Autoimmunity

Background:

Selective immunoglobulin A deficiency (IgAD) is the most prevalent primary immunodeficiency in Caucasian populations.
IgAD has been anecdotally linked to several autoimmune diseases, but comprehensive data is limited.

Purpose of the Study:

To review and present data on the prevalence of IgAD in patients with specific autoimmune diseases.
To explore the potential shared genetic underpinnings between IgAD and autoimmune disorders.

Main Methods:

Literature review of existing studies on IgAD prevalence in autoimmune diseases.
Analysis of recent large-scale screening data for IgAD in patients with Graves disease, SLE, T1D, CD, MG, and RA.

Main Results:

Presents data on IgAD prevalence across multiple autoimmune conditions.
Highlights the significant role of genetic factors, including MHC and non-MHC genes (IFIH1, CLEC16A), in both IgAD and autoimmune diseases.

Conclusions:

Suggests a shared genetic predisposition between IgAD and autoimmune disorders such as Graves disease, SLE, T1D, CD, MG, and RA.
Emphasizes the importance of investigating common genetic backgrounds for these conditions.