The IL-36 family of cytokines and receptors seems to play a role in the pathogenesis of both pustular psoriasis, and the much more common variant, plaque-type psoriasis. Human skin biopsies from patients with psoriasis show overexpression of IL-36 and mice that lack the inhibitory IL-36 receptor (IL-36Ra) antagonist develop psoriasis, suggesting that signaling through the IL-36R may drive the skin lesions of psoriasis. Currently, no drugs targeting IL-36 are used in the treatment of psoriasis. The patent WO2013074569 describes an antibody to the IL-36R that is proposed as a potential therapy for psoriasis.