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It is possible that the main title of the report Common Variable Immune Deficiency is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
Common Variable Immune Deficiency (CVID) is a type of primary immunodeficiency, which is defined as an immune system dysfunction typically caused by a mutation in a gene or genes. The World Health Organization (WHO) recognizes more than 150 primary immunodeficiencies ranging from relatively common to quite rare.
CVID is one of the most prevalent of primary immunodeficiencies and manifests a wide variability of symptoms and range of severity. It is considered a diverse group of diseases of unknown cause (etiology) as many different immune system defects have been reported. CVID is characterized by a low level of specific proteins (antibodies, also called immunoglobulins) in the fluid portion of the blood which results in a decreasedability to fight invading microorganisms, toxins, or other foreign substances. These immunoglobulins are produced by specialized white blood cells (B cells) as they mature.
The cause of CVID is unknown in 75-80% of cases, and a genetic cause has been identified in 10-20%. Sporadic cases, with no apparent history of the disorder in their family, may be caused by a complex interaction of environmental and genetic components (multifactorial inheritance), but genes that are involved in the development and function of B cells are believed to be the primary cause.
March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
Immune Deficiency Foundation
40 W. Chesapeake Avenue
Towson, MD 21204
NIH/National Heart, Lung and Blood Institute
P.O. Box 30105
Bethesda, MD 20892-0105
International Patient Organization for Primary Immunodeficiencies
Firside Main Road
Cornwall, PL11 3LE
Jeffrey Modell Foundation
780 Third Avenue
New York, NY 10017
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
PO Box 241956
Los Angeles, CA 90024
European Society for Immunodeficiencies
1-3 rue de Chantepoulet
Geneva, CH 1211
This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report
This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.
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Last Updated: 6/21/2011
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