Emostasi e Trombosi, Società Italiana di. 2026. “PO54 | CANCER-ASSOCIATED THROMBOSIS IN ASPIRIN-TREATED PATIENTS AFTER ARTERIAL THROMBOSIS: THE COMPASS-ARTECAT-ASA PROSPECTIVE COHORT STUDY: G. Gerotziafas1|3|4|5, S. Allakhverdieva6, P. Henrique Fernandes Do Carmo Las Casa1, P. Van Dreden1|2, J. Fareed3, N. Lomakin6 , I. Zotova6, L. Buryachkovskaya7 | 1Sorbonne University, INSERM UMR_S_938, CRSA, Research Department "Cancer, Vessels, Biology and Therapeutics" (CaVITE), Research Group "Cancer-Angiogenesis-Thrombosis and Haemostasis," Thrombosis Center, University Institute of Cancerology (UIC), Saint Antoine University Hospital Assistance Publique Hôpitaux De Paris (AP-HP), Paris, France; 2Clinical Research, Diagnostica Stago, Gennevilliers, France; 3Center of Translational Research and Education, Department of Pathology and Laboratory Medicine, Loyola University Stritch School of Medicine, Maywood, Chicago, USA; 4Thrombosis Center, Department of Obstetrics, Gynecology and Perinatal Medicine, The I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia; 5VAS-European Independent Foundation in Angiology Vascular Medicine Milan, Italy; 6Federal State Budgetary Educational Institution of Further Professional Education ‘Russian Medical Academy of Continuous Professional Education’ of the Ministry of Healthcare of the Russian Federation, Moscow, Russia; 7Federal State Budgetary Institution «National Medical Research Centre of Cardiology Named After Academician E. I. Chazov» of the Ministry of Health of the Russian Federation, Moscow, Russia”. Bleeding, Thrombosis and Vascular Biology 5 (s1). https://doi.org/10.4081/btvb.2026.546.