“CO41 | Failure in Assisted Reproductive Techniques: Insights from the First Registry: E. Grandone1,3,4, C. Lodigiani2, D. Colaizzo3, M. Passaretti2, J. Khizroeva4, A. De Laurenzo3, P. Totaro5, E. Bucherini6, D. Baldini7, V. Bitsadze4, A. Makatsarya4, M. Mastroianno3, G. Piazza8, M. Othman9, M. Margaglione1 | 1University of Foggia, Italy; 2Humanitas University, Rozzano, Italy; 3IRCCS Casa Sollievo Della Sofferenza, San Giovanni Rotondo, Italy; 4First Sechenov University, Russia; 5Santa Maria Hospital, Bari, Italy; 6Angiologia, Faenza, Italy; 7Momo Fertilife, Bisceglie, Italy; 8Brigham Women Hospital, USA; 9Queen’s University, Kingston, Canada”. 2025. Bleeding, Thrombosis and Vascular Biology 4 (s1). https://doi.org/10.4081/btvb.2025.310.