Severe Combined Immunodeficiency
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Severe Combined Immunodeficiency 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.
- Autosomal Recessive Severe Combined Immunodeficiency
- ADA Deficiency
- X-Linked Recessive Severe Combined Immunodeficiency with Leukopenia
- Bare Lymphocyte Syndrome
- Reticular Dysgenesis
- Adenosine Deaminase Deficiency
Severe Combined Immunodeficiency (SCID) is a group of rare congenital syndromes characterized by little if any immune responses. This results in frequent recurring infections. Cellular immune responses involve specialized white blood cells known as T lymphocytes or "killer cells". These cells assist other white blood cells (B lymphocytes) to respond to infectious, foreign agents that invade the body (i.e., bacteria or viruses). The B lymphocytes maintain immunity by enabling the body to produce and preserve circulating antibodies.
People with Severe Combined Immunodeficiency are unusually susceptible to recurrent infections with bacteria, viruses, fungi, and other infectious agents that can be life-threatening.
There are several types of Severe Combined Immunodeficiencies. These include: Autosomal Recessive Severe Combined Immunodeficiency, X-Linked Recessive Severe Combined Immunodeficiency, Adenosine Deaminase Deficiency (ADA), Bare Lymphocyte Syndrome, Severe Combined Immunodeficiency with Leukopenia (Reticular Dysgenesis), and Swiss-type Agammaglobulinemia. Each type of Severe Combined Immune Deficiency is caused by a different genetic defect, but the primary symptom is reduced or absent immune functions, and all types are hereditary.
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 Institute of Allergy and Infectious Diseases
Office of Communications and Government Relations
6610 Rockledge Drive, MSC 6612
Bethesda, MD 20892-6612
American Academy of Allergy, Asthma and Immunology
611 East Wells Street
Milwaukee, WI 53202
International Patient Organization for Primary Immunodeficiencies
Firside Main Road
Cornwall, PL11 3LE
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
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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: 7/19/2010
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