Deficiency of the interleukin-1–receptor antagonist

Deficiency of the interleukin-1–receptor antagonist
Deficiency of the interleukin-1–receptor antagonist
Classification and external resources
OMIM 612852

Deficiency of the interleukin-1–receptor antagonist (DIRA) is a rare, autosomal recessive, genetic autoinflammatory syndrome resulting from mutations in IL1RN, the gene encoding the interleukin 1 receptor antagonist.

The mutations result in an abnormal protein that is not secreted, exposing the cells to unopposed interleukin 1 activity. This results in sterile multifocal osteomyelitis (bone inflammation in multiple places), periostitis (inflammation of the membrane surrounding the bones), and pustulosis (due to skin inflammation) from birth.

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