Emostasi e Trombosi SI di. OC09 | BLEEDING RISK ASSOCIATED WITH FACTOR XI MONOCLONAL ANTIBODIES IN COMBINATION WITH ASPIRIN IN HEALTHY VOLUNTEERS AND ORTHOPEDIC SURGERY PATIENTS: ANALYSIS FROM RECENT PHASE 1 AND PHASE 2 STUDIES: A.P. Kithcart1, M.E. Burczynski1, P. Banerjee1, M. Onisko1, Y. Wang1, K. Mohammadi1, D. Li1, S. Li1, J. Ackroyd2, B.A. Olenchock1, D.E. Gutstein1, J. I. Weitz3 | 1Regeneron Pharmaceuticals, Inc., Tarrytown, NY, USA; 2Clinical Research, Fortrea Clinical Research Unit Ltd, Leeds, UK; 3McMaster University, Hamilton, ON, Canada. Bleeding Thromb Vasc Biol [Internet]. 2026 Apr. 16 [cited 2026 Apr. 17];5(s1). Available from: https://www.btvb.org/btvb/article/view/492