Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-24 @ 3:30 PM
Ignite Modification Date:
2025-12-24 @ 3:30 PM
NCT ID:
NCT00400192
Brief Summary:
Individuals who experience a traumatic injury often have a significant amount of blood loss and may require a blood transfusion. In some individuals who receive a blood transfusion, white blood cells from the donor's blood may remain in the body for years, a condition known as microchimerism. This study will examine the reasons why microchimerism occurs in some blood transfusion recipients and not others.
Detailed Description:
Approximately 20% of individuals who suffer a traumatic injury require a blood transfusion; of these, 10% to 15% experience a condition known as transfusion-associated microchimerism. This occurs when white blood cells, or leukocytes, from the donor's blood persist in the recipient long after the transfusion occurs. The genetically distinct donor cells can remain in the individual for decades, and may account for as many as 4% of the white blood cells in the recipient's body. This suggests that the donor cells are tolerated by the recipient's immune system. The purpose of this study is to examine the specific factors that predispose some blood transfusion recipients to develop microchimerism.
In this study, blood samples will be collected from injured individuals who arrive at the University of California at Davis Medical Center. Individuals who receive a blood transfusion, as well as a control group of individuals who do not receive a transfusion, will be approached to enroll in the study. Individuals who agree to participate will have their blood collected at Days 7, 14, and 28 and Months 3 and 6. Study researchers will analyze the blood for evidence of microchimerism. Participants with microchimerism will undergo additional blood collection at Months 12, 18, 24, 30, and 36. Information will be collected from all participants on health status, injury characteristics, hospital care, blood transfusion details, and blood donor characteristics.
Study:
NCT00400192
Study Brief:
Protocol Section:
NCT00400192