A Multicenter, Randomized, Double-blind, Placebo-controlled Phase II/III Clinical Study to Evaluate the Efficacy and Safety of Picankibart in Patients With Active Psoriatic Arthritis
This is a multicenter, randomized, double-blind, placebo-controlled Phase II/III clinical trial evaluating the efficacy and safety of picankibart (IBI112) in patients with active psoriatic arthritis (PsA). The study consists of two stages: Phase II dose-finding (n=90) and Phase III confirmatory (n=132). Participants will receive subcutaneous (SC) injections of either picankibart (200mg) or placebo with different dosing schedules, with placebo crossover to active treatment at Week 26. The Phase II portion will identify optimal dosing for Phase III, which will confirm efficacy. The study will evaluate improvements in joint symptoms, physical function, quality of life, and skin manifestations. Primary endpoint is percentage of participants who achieved an American College of Rheumatology (ACR) 20 Response at Week 24.
• Age 18-75 years
• Diagnosed with PsA for ≥3 months, and meeting Classification Criteria for Psoriatic Arthritis (CASPAR) at screening
• Having active PsA: ≥3 tender joints and ≥3 swollen joints at screening and baseline
• Having active plaque psoriasis (≥1 lesion ≥2cm) or nail psoriasis, or a documented history of plaque psoriasis
• Inadequate response or intolerance to prior NSAIDs or non-biologic DMARDs
• Stable doses of protocol permitted background therapy (if any)