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Deconstructing common variable immunodeficiency by genetic analysis.

Alejandro A Schäffer¹, Ulrich Salzer, Lennart Hammarström

¹National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Department of Heath and Human Services, 8600 Rockvile Pike, Bethesda, MD 20894, USA.

Current Opinion in Genetics & Development

|May 1, 2007

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Common variable immunodeficiency (CVID) is a primary immunodeficiency causing infections and increased risks. Genetic studies identified key mutated genes, improving diagnosis and future research for CVID and related diseases.

Area of Science:

Immunology
Genetics

Background:

Common variable immunodeficiency (CVID) is the most frequent symptomatic primary immunodeficiency.
Patients experience recurrent bacterial infections, autoimmune diseases, lung damage, and specific cancers.

Purpose of the Study:

To review genetic findings in CVID.
To highlight implications for diagnosis and future research.

Main Methods:

Review of genetic studies published since 2003.
Identification of mutated genes (ICOS, TNFRSF13B, TNFRSF13C, CD19) and their inheritance patterns.
Summary of genetic linkage studies identifying potential CVID loci.

Main Results:

Four genes (ICOS, TNFRSF13B, TNFRSF13C, CD19) are known to be mutated in CVID patients.

Related Experiment Videos

TNFRSF13B mutations can be heterozygous, while others are recessive.

Genetic linkage studies suggest loci for dominant CVID genes on chromosomes 4q, 5p, and 16q.

Conclusions:

Recent genetic discoveries have significantly advanced CVID diagnosis.
These findings pave the way for novel genetic studies and therapeutic strategies.
CVID genes may also play a role in common conditions like asthma and stroke.