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A rare genetic primary immunodeficiency due to a defect in adaptive immunity disorder with characteristics of severe immunodeficiency. The disease presents with profound susceptibility to viral, fungal and bacterial infections due to impaired CD25-mediated T-regulatory cell function, in association with severe autoimmune disease such as alopecia universalis, erythrodermia and autoimmune thyroiditis and enteropathy. Caused by homozygous or compound heterozygous mutation in the IL2RA gene on chromosome 10p15.
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