IL17A and psoriasis: Professor Krueger JG has in‐depth research on the pathogenesis of psoriasis, which includes the driving effects of cytokines other than IL‐17A in the IL‐17 family on the inflammatory pathways associated with psoriasis16; inflammatory loops17; the imbalance between Th17 cell subtypes (e.g., regulatory dendritic cells, type 1 Tregs) and regulatory immune cell subsets in psoriasis; small molecule drugs (tyrosinase 2 inhibitor) and so on.18, 19, 20