Psoriasis-related markers–interleukins (IL-1β and IL-23a), chemokines (CCL20, CXCL1, CXCL2, and CXCL10), and antimicrobial peptides (S100A8/9)–were upregulated after induction with IL-17a/TNF-α. This evidence concerns the gene IL1B and psoriasis.