The Genetics and Functional Basis of Inherited Platelet, White Blood Cell, Red Blood Cell, and Blood Clotting Disorders.
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|ClinicalTrials.gov Identifier: NCT00230165|
Recruitment Status : Recruiting
First Posted : September 30, 2005
Last Update Posted : July 7, 2021
Blood contains red blood cells, white blood cells, and platelets, as well as a fluid portion termed plasma. We primarily study blood platelets, but sometimes we also analyze the blood of patients with red blood cell disorders (such as sickle cell disease), white blood cell disorders, and disorders of the blood clotting factors found in plasma.
Blood platelets are small cell fragments that help people stop bleeding after blood vessels are damaged. Some individuals have abnormalities in their blood platelets that result in them not functioning properly. One such disorder is Glanzmann thrombasthenia. Most such patients have a bleeding disorder characterized by nosebleeds, gum bleeding, easy bruising (black and blue marks), heavy menstrual periods in women, and excessive bleeding after surgery or trauma. Our laboratory performs advanced tests of platelet function and platelet biochemistry. If we find evidence that a genetic disorder may be responsible, we analyze the genetic material (DNA and RNA) from the volunteer, and when possible, close family members to identify the precise defect.
|Condition or disease|
|Study Type :||Observational|
|Estimated Enrollment :||60 participants|
|Official Title:||Studies of Interactions Among Normal and Abnormal Blood Cells, and the Vessel Wall, and Studies of Genetic and Functional Basis of Inherited Platelet, White Blood Cell, Red Blood Cell and Coagulation Disorders|
|Study Start Date :||September 2005|
|Estimated Primary Completion Date :||June 2022|
|Estimated Study Completion Date :||June 2022|
Normal, healthy volunteers 18 years of age or older of either sex and any ethnic background
Patients with Glanzmann thrombasthenia or their relatives, inherited qualitative and/or quantitative platelet disorders, inherited disorders of white blood cells, inherited disorders of coagulation
- Platelet aggregation [ Time Frame: minutes ]The initial slope of the increase in light transmission after an agonist is added to a cuvette containing platelet-rich plasma.
Biospecimen Retention: Samples With DNA
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00230165
|Contact: Recruitment Specialistfirstname.lastname@example.org|
|United States, New York|
|Rockefeller University Hospital||Recruiting|
|New York, New York, United States, 10021|
|Contact: Recruitment Specialist 800-782-2737 email@example.com|
|Principal Investigator: Barry Coller, MD|
|Principal Investigator:||Barry Coller, MD||Rockefeller University|