Influence of low body weight on long-term clinical outcomes in patients with venous thromboembolism: From the COMMAND VTE registry.

There is a paucity of data on the influence of low body weight on clinical outcomes in patients with acute venous thromboembolism (VTE). The COMMAND VTE registry is a multicenter cohort study enrolling 3027 consecutive patients with acute symptomatic VTE. The current study population consisted of 2778 patients with available body weight value, who were divided into 2 groups; 1705 patients with lower body weight (≤60 kg) and 1073 patients with higher body weight (>60 kg). Patients with lower body weight were older (70.8 versus 60.9 years, P < 0.001), and more often women (75% versus 38%, P < 0.001), and more often had active cancer (27% versus 19%, P < 0.001) than those with higher body weight. The cumulative 5-year incidence of recurrent VTE was not significantly different between the 2 groups (10.6% versus 10.7%, P = 0.51). The cumulative 5-year incidences of major bleeding and all-cause death were significantly higher in patients with lower body weight than in those with higher body weight (14.6% versus 9.6%, P < 0.001, and 35.8% versus 19.8%, P < 0.001, respectively). The excess adjusted risk of patients with lower body weight relative to those with higher body weight remained significant for major bleeding and all-cause death (HR 1.57, 95%CI: 1.16-2.12, P = 0.003, and HR 1.50, 95%CI: 1.24-1.81, P < 0.001, respectively). In the current Japanese real-world registry, there were a high proportion of patients with low body weight, who had a higher risk for major bleeding and mortality without significant excess risk for recurrent VTE.

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