OP0230 EFFICACY AND SAFETY OF TILDRAKIZUMAB, A HIGH-AFFINITY ANTI–INTERLEUKIN-23P19 MONOCLONAL ANTIBODY, IN PATIENTS WITH ACTIVE PSORIATIC ARTHRITIS IN A RANDOMISED, DOUBLE-BLIND, PLACEBO-CONTROLLED, MULTIPLE-DOSE, PHASE 2B STUDY. (2nd June 2020)