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Updated: Aug 11, 2026
13:27
Generation of Human CD40-activated B cells
Published on: October 16, 2009
CD40:CD40L interactions in X-linked and non-X-linked hyper-IgM syndromes
1Dept. of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway 08854, USA.
Immunologic Research
|January 31, 2002
Summary
Hyper-IgM (HIM) syndrome is a rare immunodeficiency affecting antibody production. This review details X-linked and non-X-linked forms, highlighting the CD40:CD40L pathway
Area of Science:
- Immunology
- Genetics
Background:
- Hyper-IgM (HIM) syndrome is a rare primary immunodeficiency.
- Characterized by low IgG, IgA, and IgE with normal/high IgM.
- Can be acquired or familial (X-linked or autosomal).
Purpose of the Study:
- To review the key features of X-linked and non-X-linked HIM syndrome.
- To discuss the role of the CD40:CD40L pathway in HIM pathogenesis.
Main Methods:
- Review of existing literature on Hyper-IgM syndrome.
- Analysis of genetic mutations (CD40L, AlD) and their impact.
- Discussion of the CD40:CD40L receptor-ligand interaction.
Main Results:
- X-linked HIM results from CD40 ligand (CD40L) gene mutations.
- Non-X-linked HIM involves heterogeneous genetic causes, including AlD gene mutations.
- The CD40:CD40L interaction is crucial for immune responses and HIM development.
Conclusions:
- The CD40:CD40L pathway is central to the pathogenesis of HIM syndrome.
- Understanding genetic defects is key to diagnosing and potentially treating HIM.
- Further research into unidentified genes causing HIM is warranted.
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