Standardization of CD3+ T Cell Dose for Patients Receiving Allogeneic Peripheral Blood Stem Cell Transplantation From Matched Related Donors

2014-07-23 21:13:38 | BioPortfolio


Stem cells collected from sibling donors for allogenic transplants contain various types of cells. The predominant immune cells are called CD3+ T cells. The amount of these T cells vary vastly from donor to donor. This study is to determine if standardizing the CD3+ T cell dose will benefit the recipient (patient). As well as to help discover if dose standardization causes less variation in outcomes between patients and to make transplantation more predictable and complications easier to manage.


The optimal CD3+ cell dose to be used for allo HSCT is unknown. In addition, there are multiple variables in addition to CD3+ cell dose which affect engraftment, immune reconstitution, GVH and GVL in these patients including recipient age, diagnosis, disease status at transplantation, donor/recipient tissue type match, preparative regimen, and GVHD prophylaxis. Thus the ability to produce products with a fixed CD3+ content is critical to further research and ultimately to the definition of the "right dose" of CD3+ cells for various clinical situations.

Patients who meet eligibility criteria will receive a peripheral blood stem cell product from their original matched sibling donor engineered to deliver a dose of 3.0+/-0.5 x107 CD3+ cells/kg recipient body weight. Other components of the graft will not be manipulated and the recipient will receive the total number of cells collected with the exception of minimal losses that occur during the process of CD3+ T cell isolation.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Supportive Care


Hematopoietic Stem Cell Transplantation


CD3+ T cell depletion


University of Alabama Hospital
United States




University of Alabama at Birmingham

Results (where available)

View Results


Published on BioPortfolio: 2014-07-23T21:13:38-0400

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