In the APEX Phase 3b RCT (N=1020), guselkumab (IL-23p19 inhibitor) significantly reduced radiographic progression (ΔvdH-S 0.55 & 0.54 vs 1.35 PBO; p≤0.002) and improved ACR20 (67–68% vs 47%) at W24 in biologic-naïve PsA. Safety consistent with prior data. Abstract LB0010 https://t.co/mFDsBsCg6m