Bevacizumab and the risk of arterial and venous thromboembolism in patients with metastatic, castration-resistant prostate cancer treated on Cancer and Leukemia Group B (CALGB) 90401 (Alliance)

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Patel J.N., Jiang C., Hertz D.L., Mulkey F.A., Owzar K., Halabi S., Ratain M.J., Friedman P.N., Small E.J., Carducci M.A., Mahoney J.F., Kelley M.J., Morris M.J., Kelly W.K., McLeod H.L.

Cancer 2015 121:7 (1025-1031)

BACKGROUND Bevacizumab is associated with an increased risk of arterial thromboembolism (ATE); however, its effect on venous thromboembolism (VTE) remains controversial. Scant data exist on the factors that increase the risk of ATE/VTE in patients with prostate cancer. The authors investigated the association of bevacizumab treatment and clinical factors with ATE/VTE risk in patients who were treated on Cancer and Leukemia Group B (CALGB) trial 90401. METHODS Patients with metastatic, castration-resistant prostate cancer were randomized to receive docetaxel and prednisone with or without bevacizumab once every 21 days. Cycle-to-event Cox regression models were used to investigate the association of bevacizumab with the incidence of grade 3 or greater (?3) ATE and VTE. Age, prior ATE/VTE, baseline antiplatelet/anticoagulant use, and VTE risk score (based on leukocyte count, hemoglobin, platelet count, body mass index, and tumor location) were evaluated in univariate and multivariable analyses. RESULTS Of 1008 randomized patients, the odds of experiencing grade ?3 ATE were significantly greater in those who received bevacizumab compared with…(vermás)


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