FDA has approved guselkumab (Tremfya) for active psoriatic arthritis, making it the 1st IL-23 inhibitor approved for PsA. Approval is based on DISCOVER-1 & DISCOVER-2 RCTs. Dosing: 100 mg SC q8 wks after loading dose at 0, 4 wks. https://t.co/1nCWuC1zii