The Effect of Guselkumab on Inhibiting Radiographic Progression in Patients with Active Psoriatic Arthritis: Study Protocol for APEX, a Phase 3b, Multicenter, Randomized, Double‑blind, Placebo‑controlled Trial
Trials. 2023 doi: 10.1186/s13063-022-06945-y
Guselkumab was approved for treating the signs and symptoms of active PsA following two Phase 3 global studies, DISCOVER-1 and DISCOVER-2. The Phase 3b APEX study has been designed to address the limitations of DISCOVER-2 and further assess the effects of guselkumab Q4W and Q8W on PsA outcomes.