Melina Verso1, Andres Munoz2, Rupert Bauersachs3, Menno V Huisman4, Mario Mandalà5, Giorgio Vescovo6, Cecilia Becattini7, Giancarlo Agnelli7. 1. Internal, Vascular and Emergency Medicine - Stroke Unit, University of Perugia, Perugia, Italy. Electronic address: melina.verso@unipg.it. 2. Medical Oncology Department, Hospital General Universitario Gregorio Marañón, Universidad, Complutense, Madrid, Spain. 3. Klinikum Darmstadt GmbH, Darmstadt, Germany. 4. Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands. 5. Medical Oncology, University of Perugia, Perugia, Italy. 6. Internal Medicine, OSA Azienda Ospedaliera, University of Padua, Padua Italy. 7. Internal, Vascular and Emergency Medicine - Stroke Unit, University of Perugia, Perugia, Italy.
Abstract
BACKGROUND: Whether concomitant administration of anticancer agents influences the efficacy and safety of oral anticoagulants in patients treated for cancer-associated venous thromboembolism (VTE) is undefined. The pharmacological interaction between anticancer agents and direct oral anticoagulants is perceived as a concern. METHODS: We evaluated the effects of concomitant administration of anticancer agents on recurrent VTE, major bleeding and death in patients with cancer-associated VTE randomised to receiveapixaban or dalteparin in the Caravaggio study. RESULTS:Anticancer agents were concomitantly given to 336 patients (58.3%) treated withapixaban and to 332 patients (57.3%) treated with dalteparin. In patients treated with apixaban, recurrent VTE occurred in 20 (6.0%) and 12 (5.0%) among patients treated or not treated with anticancer agents, respectively (hazard ratio [HR] = 1.14; 0.55-2.38); major bleeding occurred in 12 (3.6%) and 10 (4.2%) patients , respectively (HR = 0.79; 0.34-1.82), and death occurred in 74 (22.0%) and 61 (25.4%) patients , respectively (HR = 0.71; 0.51-1.00). In patients treated with dalteparin, recurrent VTE occurred in 24 (7.2%) and 22 (8.9%) among patients treated or not treated with anticancer agents, respectively (HR = 0.71; 0.40-1.28); major bleeding occurred in 16 (4.8%) and 7 (2.8%) patients, respectively (HR = 1.78; 0.66-4.79), and death occurred in 87 (26.2%) and 66 (26.7%) patients, respectively (HR = 0.85; 0.62-1.18). The comparative efficacy and safety of apixaban and dalteparin was not different in patients treated or not treated with anticancer agents. No effect on recurrent VTE, major bleeding or death was observed with inhibitors or inducers of P-glycoprotein and/or CYP3A4. CONCLUSION: In our study, concomitant administration of anticancer agents had no effect on the risk of VTE recurrence or major bleeding in patients treated with apixaban or dalteparin for cancer-associated VTE.
RCT Entities:
BACKGROUND: Whether concomitant administration of anticancer agents influences the efficacy and safety of oral anticoagulants in patients treated for cancer-associated venous thromboembolism (VTE) is undefined. The pharmacological interaction between anticancer agents and direct oral anticoagulants is perceived as a concern. METHODS: We evaluated the effects of concomitant administration of anticancer agents on recurrent VTE, major bleeding and death in patients with cancer-associated VTE randomised to receive apixaban or dalteparin in the Caravaggio study. RESULTS: Anticancer agents were concomitantly given to 336 patients (58.3%) treated with apixaban and to 332 patients (57.3%) treated with dalteparin. In patients treated with apixaban, recurrent VTE occurred in 20 (6.0%) and 12 (5.0%) among patients treated or not treated with anticancer agents, respectively (hazard ratio [HR] = 1.14; 0.55-2.38); major bleeding occurred in 12 (3.6%) and 10 (4.2%) patients , respectively (HR = 0.79; 0.34-1.82), and death occurred in 74 (22.0%) and 61 (25.4%) patients , respectively (HR = 0.71; 0.51-1.00). In patients treated with dalteparin, recurrent VTE occurred in 24 (7.2%) and 22 (8.9%) among patients treated or not treated with anticancer agents, respectively (HR = 0.71; 0.40-1.28); major bleeding occurred in 16 (4.8%) and 7 (2.8%) patients, respectively (HR = 1.78; 0.66-4.79), and death occurred in 87 (26.2%) and 66 (26.7%) patients, respectively (HR = 0.85; 0.62-1.18). The comparative efficacy and safety of apixaban and dalteparin was not different in patients treated or not treated with anticancer agents. No effect on recurrent VTE, major bleeding or death was observed with inhibitors or inducers of P-glycoprotein and/or CYP3A4. CONCLUSION: In our study, concomitant administration of anticancer agents had no effect on the risk of VTE recurrence or major bleeding in patients treated with apixaban or dalteparin for cancer-associated VTE.
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