OP0054 EFFICACY OF GUSELKUMAB, A MONOCLONAL ANTIBODY THAT SPECIFICALLY BINDS TO THE P19-SUBUNIT OF IL-23, ON ENDPOINTS RELATED TO AXIAL INVOLVEMENT IN PATIENTS WITH ACTIVE PSA WITH IMAGING-CONFIRMED SACROILIITIS: WEEK-24 RESULTS FROM TWO PHASE 3, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDIES

Philip Helliwell, Dafna D. Gladman, Denis Poddubnyy, Philip J. Mease, Xenofon Baraliakos, Alexa P. Kollmeier, Elizabeth C. Hsia, X. L. Xu, S. Sheng, Prasheen Agarwal, B. Zhou, S. D. Chakravarty, M. Shawi, Chetan S. Karyekar, Atul Deodhar, Désirée van der Heijde