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In Vitro Studies of Immunological and Stem Cell Function in Peripheral Blood Mononuclear Cells in Patients



In Vitro Studies of Immunological and Stem Cell Function in Peripheral Blood Mononuclear Cells in Patients

For Condition: Immunologic Deficiency Syndrome,Leukemia,Lymphoma,Neoplasm
Status: Completed
Sponsor(s): National Cancer Institute (NCI) ,
Synopsis: Peripheral blood mononuclear cells (PBMC) will be collected from patients who have leukemia or lymphoma or other medical conditions involving altered lymphohematopoietic stem cell or immunological function. These PBMC will be assessed for cellular markers by flow cytometry and will be studied for in vitro T helper, effector and suppressor cell functions, to determine whether cell mediated immunity is involved in the condition, or indicative of therapeutic efficacy or is predictive for outcome. Peripheral blood stem cells (PBSC) from untreated donors and from cytokine treated donors will be assessed for cellular markers and in vitro growth characteristics that might be useful for identifying normal stem cell populations.
Details: Peripheral blood mononuclear cells (PBMC) and mobilized peripheral blood stem cells (PBSC) will be collected from patients who have leukemia or lymphoma or other medical conditions involving altered lymphohematopoietic stem cell or immunological function. These PBMC will be assessed for cellular markers by flow cytometry and will be studied for in vitro T helper, effector and suppressor cell functions, to determine whether cell mediated immunity is involved in the condition, or indicative of therapeutic efficacy or is predictive for outcome. PBSC will be assessed for cellular markers and in vitro growth characteristics that might be useful for identifying normal stem cell populations. Furthermore the capacity of stem cells to reconstitute the T lymphocyte lineage will be assessed using ex vivo explant cultures established with thymic or secondary lymphoid tissues.
Eligibility:
Study Type:
  Observational, Natural History
Minimum Age/Maximum Age: /
Genders: Both
Protocol Entry Criteria: Patients obtained from collaborators within and outside the NCI.
Total Enrollment: 1000

Location and Contact Information:

National Cancer Institute (NCI)
Bethesda,  Maryland,  20892
United States
 


Additional Information:
Study ID Numbers:
  930129;  93-C-0129
Study Start Date: April 22, 1993
Record last reviewed: February 4, 2003
Additional information available at: clinicaltrials.gov
Clinicaltrials.gov Reference link: NCT00001336

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