Hereditary Antithrombin Deficiency Pilot Project Registry from the American Thrombosis and Hemostasis Network (ATHN)

Patients with hereditary antithrombin deficiency (HAD) have an increased risk of venous thromboembolism (VTE). ATHN 12: HAD Pilot Project established a registry to collect data on patients with HAD to inform current practice and serve as a platform to design a multicenter global registry for patients with HAD.