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  • Title: A Retrospective Study on Efficacy and Safety of Rivaroxaban and Dalteparin for Long-Term Treatment of Venous Thromboembolism in Patients with Lung Cancer.
    Author: Lee JH, Hyun DG, Choi CM, Lee JC, Kim WS, Oh YM, Lee SD, Lee JS.
    Journal: Respiration; 2019; 98(3):203-211. PubMed ID: 31096241.
    Abstract:
    BACKGROUND: Standard therapy for cancer-associated venous thromboembolism (VTE) is low-molecular-weight heparin. The use of direct oral anticoagulants for cancer-associated VTE has increased; however, their efficacy and safety in lung cancer patients remain unclear. OBJECTIVES: We examined the efficacy and safety of rivaroxaban compared with dalteparin for cancer-associated VTE in patients with primary lung cancer. METHODS: A single-center retrospective study of 204 patients with primary lung cancer who were prescribed rivaroxaban (n = 131) or dalteparin (n = 73) for VTE was performed. The primary endpoint was a composite event including recurrence and major or clinically relevant nonmajor bleeding. Secondary endpoints included the incidence of recurrence, major and clinically relevant nonmajor bleeding, all-cause mortality, and bleeding or pulmonary embolism-related mortality. RESULTS: The composite event occurred in 38 (29.0) and 12 (16.4%) patients in the rivaroxaban and dalteparin (p = 0.045) groups, respectively. The multivariate Cox proportional hazards model for age, Eastern Cooperative Oncology Group performance score, and bleeding risk factors revealed the rivaroxaban group showed a 1.176-fold composite event risk without statistical significance (0.595-2.324, p = 0.641). There was no statistically significant intergroup difference for the incidence of VTE recurrence (5.3% in the rivaroxaban group versus 2.7% in the dalteparin group, p = 0.495) and major or clinically relevant nonmajor bleeding (23.7% in the rivaroxaban group versus 13.7% in the dalteparin group, p = 0.089). There was no significant difference in the all-cause mortality rate (hazard ratio 0.864, 95% CI 0.624-1.196, p = 0.337). CONCLUSIONS: There was no difference in the safety and efficacy profile of rivaroxaban compared with dalteparin. Therefore, rivaroxaban may be a valuable treatment option for lung cancer-associated VTE.
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