Recently, Bielecka et al. demonstrated that UA suppresses CCL20 expression induced by a cytokine mix (M5; IL-18, IL-22, IL-1α, oncostatin M, and TNF-α), all of which are related to psoriasis, in an immortal human keratinocyte cell line (HaCaT) [46]. The gene discussed is IL22; the disease is psoriasis.