Zasocitinib (Tyk2 Inhibitor) Efficacy in Psoriatic Arthritis A highly selective, tyrosine kinase 2 inhibitor zasocitinib (TAK-279), was studied in a phase 2b trial and found to be effective and safe patients with active psoriatic arthritis (PsA). https://t.co/HB0eVLLAh6 https://t.co/5Kqopaw6wL