IL36RN encodes the IL-36Ra, which suppresses the pro-inflammatory effects of IL-36 cytokines (namely IL-36α, IL-36β, and IL-36γ) by binding their receptor, interleukin-1 receptor-like 2 (IL-1RL2), and preventing the release of chemokines that stimulate the activation of neutrophils, macrophages, dendritic cells, and T cells; inducing neutrophil chemokine expression, infiltration, and pustule formation in GPP [56,57]. Here, IL1RL2 is linked to psoriasis 14, pustular.