CBS 2019
CBSMD教育中心
中 文

Scientific Library

Abstract

Recommended Article

Apixaban to Prevent Venous Thromboembolism in Patients with Cancer Cardio-Oncology Services: rationale, organization, and implementation: A report from the ESC Cardio-Oncology council Longitudinal Assessment of Vascular Function With Sunitinib in Patients With Metastatic Renal Cell Carcinoma Current Status and Future Prospects of Transcatheter Mitral Valve Replacement: JACC State-of-the-Art Review Survival After Coronary Revascularization With Paclitaxel-Coated Balloons Patient and Hospital Characteristics of Mitral Valve Surgery in the United States Transseptal puncture versus patent foramen ovale or atrial septal defect access for left atrial appendage closure Percutaneous Treatment and Outcomes of Small Coronary Vessels: A SCAAR Report

Clinical Trial2019 Feb 21;380(8):711-719.

JOURNAL:N Engl J Med. Article Link

Apixaban to Prevent Venous Thromboembolism in Patients with Cancer

Carrier M, AVERT Investigators. Keywords: direct oral anticoagulant; thromboprophylaxis; cancer patients

ABSTRACT


BACKGROUND - Patients with active cancer have an increased risk of venous thromboembolism, which results in substantial morbidity, mortality, and health care expenditures. The Khorana score (range, 0 to 6, with higher scores indicating a higher risk of venous thromboembolism) has been validated to identify patients with cancer at elevated risk for this complication and may help select those who could benefit from thromboprophylaxis.


METHODS - We conducted a randomized, placebo-controlled, double-blind clinical trial assessing the efficacy and safety of apixaban (2.5 mg twice daily) for thromboprophylaxis in ambulatory patients with cancer who were at intermediate-to-high risk for venous thromboembolism (Khorana score, ≥2) and were initiating chemotherapy. The primary efficacy outcome was objectively documented venous thromboembolism over a follow-up period of 180 days. The main safety outcome was a major bleeding episode.

RESULTS - Of the 574 patients who underwent randomization, 563 were included in the modified intention-to-treat analysis. Venous thromboembolism occurred in 12 of 288 patients (4.2%) in the apixaban group and in 28 of 275 patients (10.2%) in the placebo group (hazard ratio, 0.41; 95% confidence interval [CI], 0.26 to 0.65; P<0.001). In the modified intention-to-treat analysis, major bleeding occurred in 10 patients (3.5%) in the apixaban group and in 5 patients (1.8%) in the placebo group (hazard ratio, 2.00; 95% CI, 1.01 to 3.95; P = 0.046). During the treatment period, major bleeding occurred in 6 patients (2.1%) in the apixaban group and in 3 patients (1.1%) in the placebo group (hazard ratio, 1.89; 95% CI, 0.39 to 9.24).

CONCLUSIONS - Apixaban therapy resulted in a significantly lower rate of venous thromboembolism than did placebo among intermediate-to-high-risk ambulatory patients with cancer who were starting chemotherapy. The rate of major bleeding episodes was higher with apixaban than with placebo. (Funded by the Canadian Institutes of Health Research and Bristol-Myers Squibb-Pfizer Alliance; AVERT ClinicalTrials.gov number, NCT02048865.).

Copyright © 2018 Massachusetts Medical Society.