CCL22 and psoriasis: However, a significant number of genes which may be induced by IL-23 or IL-22 such as GRO-1 (CXCL1), S100A7, S100A8, STAT3, IL-6, SCYA20 (CCL20), SCYA22 (macrophage-derived chemokine/CCL22), and β-defensin 2 have been identified in psoriasis microarray studies [57, 59, 98, 101].