what is ADA deficiency??

ADA stands for adenosine deaminase. Adenosine deaminase is a type of enzyme which deficiency causes a disease known as ADA deficiency.  It is one form of SCID (severe combined immunodeficiency- a type of disorder that affects the immune system). The disease is caused by a mutation in a gene on chromosome 20. The gene codes for the enzyme adenosine deaminase (ADA). Without this enzyme, the body is unable to break down a toxic substance called deoxyadenosine. The toxin builds up and destroys infection-fighting immune cells called T and B lymphocytes.

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ADA is adenosine deaminase deficiency.ADA deficiency is the metabolic disorder that causes immunoodeficiency.ADA is due to lack of enzyme ,adenosine deaminase

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