Investigating Cytokine Genes of Stem Cell Donors

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00353821
Recruitment Status : Completed
First Posted : July 19, 2006
Last Update Posted : December 11, 2018
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Heart, Lung, and Blood Institute (NHLBI) )

Brief Summary:

This study seeks to investigate the factors that may account for the differences in the way a stem cell recipient s immune system works after a transplant. It will focus on cytokine genes, which give specific instructions to the genes and which may influence immune system response. More specifically, the purpose of the study is to find out how gene polymorphisms (gene variations among the population) affect the success or failure of a stem cell transplant.

Study participants will have donated blood for a stem cell transplant. They will be asked to give consent for NIH personnel to run special tests on these blood samples, which will have been placed in storage. It is hoped that blood samples will be studied from 600 stem cell donors.

Condition or disease
Stem Cell Transplantation

Detailed Description:
The NHLBI Stem Cell Allotransplantation Program is researching methods to improve allogeneic stem cell transplantation. We are particularly interested in identifying factors, which result in individual variability in outcomes. Cytokines are biological modulators of the immune system known to influence various phases of the immune response. Normal variations in the genetic material coding for cytokines (Cytokine Gene Polymorphisms or CGPs) are believed to account for some of the differences in the inflammatory response between individuals. In the future, we hope to tailor stem cell transplantation to take into account these immunological profiles. In order to characterize the effect of any such intervention, we first need to better understand the role CGPs play in immune responses in normal, healthy persons. This involves testing for the presence or absence of a polymorphism in healthy individuals, and comparing with a validated in vitro assay. None of these polymorphisms are associated with known clinical disease to be classifiable as a 'genetic defect'. Moreover, we will not correlate these polymorphisms with clinical studies to identify traits in the sample donors. We plan to utilize stored blood samples from stem cell transplant donors who have previously participated on a hematology branch protocol as well as consent future donors.

Study Type : Observational
Actual Enrollment : 24 participants
Time Perspective: Other
Official Title: Cytokine Gene Polymorphisms in Allotransplant Donors
Study Start Date : June 5, 2003
Study Completion Date : March 2, 2018

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Information from the National Library of Medicine

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Ages Eligible for Study:   2 Years to 80 Years   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Participation as a stem cell donor on a Hematology Branch protocol.

For adults: Ability to comprehend the investigational nature of the study and provide informed consent. For minors: Written informed consent from one parent or guardian. Informed assent from minors: The process will be explained to the minor on a level of complexity appropriate for their age and ability to comprehend.

Age greater than or equal to 2 and less than or equal to 80.


Subjects unable to comprehend the investigational nature of the laboratory research.

Information from the National Library of Medicine

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 identifier (NCT number): NCT00353821

United States, Maryland
National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
Principal Investigator: A. John Barrett, M.D. National Heart, Lung, and Blood Institute (NHLBI)

Responsible Party: National Heart, Lung, and Blood Institute (NHLBI) Identifier: NCT00353821     History of Changes
Other Study ID Numbers: 030201
First Posted: July 19, 2006    Key Record Dates
Last Update Posted: December 11, 2018
Last Verified: March 2, 2018

Keywords provided by National Institutes of Health Clinical Center (CC) ( National Heart, Lung, and Blood Institute (NHLBI) ):
Tumor Necrosis Factor Alpha (TNF-Alpha)
Interferon-Gamma (IFN-Gamma)
Interleukin-10 (IL-10)
Interleukin-6 (IL-6)
Interleukin-1 (IL-1 Ra)
Interleukin-1 Receptor Antagonist (IL-1 Ra)
Vitamin D Receptor (VitD R)