Interleukin 36 receptor antagonist (IL-36RA) is a member of theinterleukin-36 family ofcytokines. It was previously namedInterleukin-1 family member 5 (IL1F5).[5][6][7][8]
The protein is known to inhibit the effects of Interleukin-36 cytokines (IL-36α,IL-36β andIL-36γ) via competing with their receptorIL-36R/IL1RL2 and thereby inhibiting their proinflammatory effects.[9]
Mutations in the IL-36RN gene resulting in a decrease or production of defective IL-36RA protein have been shown to cause inflammatory skin diseases includinggeneralised pustular psoriasis,acrodermatitis continua suppurativa Hallopeau (ACH) andacute generalized exanthematous pustulosis (AGEP).[10]