Completed
Lymphocytapheresis of Patients With Pancytopenia
Led by National Heart, Lung, and Blood Institute (NHLBI) · Updated on 2020-08-21
38
Participants Needed
1
Research Sites
604 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Aplastic anemia is a condition in which the cells normally found in blood are greatly decreased. The normal levels of white blood cells, red blood cells, and platelets are much lower in patients with aplastic anemia. Because of these low levels of blood cells, patients with aplastic anemia have a variety of immune system abnormalities. However, low levels of blood cells make it difficult to collect specialized white blood cells (mononuclear cells) for research studies. This study was designed to collect lymphocytes from patients with low levels of all blood cells (pancytopenia) for use in research. Patients participating in the study will undergo a special procedure known as lymphapheresis. During lymphapheresis blood is taken from the patient in a manner similar to blood donation. The white blood cells are selectively removed by spinning (centrifugation), and the remaining red blood cells and platelets are placed back (re-infused) into the donor s blood stream. Patients participating in this study will not benefit directly from it. However, cells collected in this study may increase scientific knowledge and improve understanding and treatment for diseases like aplastic anemia.
CONDITIONS
Official Title
Collection of Blood From Patients With Pancytopenia
Who Can Participate
Eligibility Criteria
You may qualify if you...
- INCLUSION CRITERIA:
All patients with aplastic anemia or other bone marrow failure in which we would not expect to obtain 1 X 10(8) mononuclear cells from 100 mls of peripheral blood (i.e. an absolute lymphocyte count approximately less than 2000 per mm(3)).
Age greater than or equal to 18.
EXCLUSION CRITERIA:
Patients unable to comprehend the investigational nature of the procedure.
Patients unable to tolerate a temporary reduction of blood volume the equivalent of one unit of blood.
You will not qualify if you...
History of severe allergic reactions to study medication Currently pregnant or breastfeeding Recent participation in another clinical trial within the last 30 days Presence of uncontrolled medical conditions that could affect safety
Trial Site Locations
Total: 1 location
1
National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, United States, 20892
Status Unknown
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
1
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