| NOUN | state | severe combined immunodeficiency, severe combined immunodeficiency disease, SCID | a congenital disease affecting T cells that can result from a mutation in any one of several different genes |
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| Meaning | A congenital disease affecting T cells that can result from a mutation in any one of several different genes; children with it are susceptible to infectious disease; if untreated it is lethal within the first year or two of life. | |
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| Synonyms | severe combined immunodeficiency disease, SCID | |
| Narrower | ADA-SCID | SCID resulting from mutation of a gene that codes for adenosine deaminase |
| X-linked SCID, X-SCID | SCID in male children resulting from mutation of a gene that codes for a protein on the surface of T cells that allows them to develop a growth factor receptor | |
| Broader | immunodeficiency | immunological disorder in which some part of the body's immune system is inadequate and resistance to infectious diseases is reduced |
| monogenic disorder, monogenic disease | An inherited disease controlled by a single pair of genes | |
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