NCT05053100

Understanding the Risk of Blood Clots and Bleeding in Patients With Hematological Malignancies, HAT Study

Hemorrhage and Thrombosis in Hematology Malignancies: Understanding the Risks of Thrombosis and Anticoagulation in Patients With Hematologic Malignancies (HAT Trial)

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 100 (actual)
• Sponsor: Mayo Clinic · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This study evaluates the risks and experience of blood clots and bleeding in patients with blood cancers. While it is standard of care to use medications to reduce the risk of blood clots in hospitalized individuals, some patients with blood cancers have low platelet counts that can increase the concern for bleeding complications associated with these medications. At this time, the optimal management strategies for blood clots are not well known for patients with blood cancers. This pilot study evaluates additional information that could help doctors know which patients are at highest risk for blood clots.

Detailed description

PRIMARY OBJECTIVES: I. Determine the incidence of hemorrhage in the 3 months following deep vein thrombosis diagnosis in hospitalized malignant hematology patients, based on anticoagulant use and presence of thrombocytopenia. II. Determine recurrent or progressive venous thromboembolism in the 3 months following deep vein thrombosis diagnosis in hospitalized malignant hematology patients, based on anticoagulant use and presence of thrombocytopenia. SECONDARY OBJECTIVES: I. Assess feasibility of database creation of patient and clinical characteristics regarding thrombosis and hemorrhage in hospitalized malignant hematology patients. II. Assess feasibility of patient enrollment and hemostatic laboratory collection pre, during and post treatment. III. Describe the impact of thrombocytopenia on resource utilization following thrombosis diagnosis (blood product administration, imaging studies performed, number of days hospitalized). IV. Describe the impact of therapeutic anticoagulation vs prophylactic anticoagulation on resource utilization following thrombosis diagnosis (blood product administration, imaging studies performed, number of days hospitalized). V. Define baseline hemostatic characteristics in hospitalized malignant hematology patients prior to chemotherapy and the association with thrombosis or hemorrhage. VI. Describe changes in laboratory hemostatic characteristics pre-treatment, during treatment and post treatment. OUTLINE: Patients' electronic health record are reviewed for 12 months and/or undergo collection of blood at pretreatment and on days 7, 28, 90, and 180.

Conditions

• Acute Leukemia
• Deep Vein Thrombosis
• Hematopoietic and Lymphoid Cell Neoplasm
• Hodgkin Lymphoma
• Myeloproliferative Neoplasm
• Non-Hodgkin Lymphoma
• Plasma Cell Myeloma
• Thrombocytopenia

Interventions

Type	Name	Description
PROCEDURE	Biospecimen Collection	Undergo collection of blood
OTHER	Electronic Health Record Review	Undergo electronic health record review

Timeline

• Start date: 2021-08-17
• Primary completion: 2024-07-05
• Completion: 2024-07-05
• First posted: 2021-09-22
• Last updated: 2025-05-02

Locations

1 site across 1 country: United States