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Enhancing Graft vs Leukemia Via Delayed Ex-Vivo Co-Stimulated DLI After Non-Myeloablative Stem Cell Transplantation

2014-08-27 03:42:35 | BioPortfolio

Summary

This is a new platform in non-myeloablative allogeneic stem cell transplantation to improve survival by harnessing the immunologic potential of donor T-cells to induce and maintain long-term remissions in patients with hematologic malignancies without undue toxicity. This study involves is the first study in humans directed at optimizing the graft vs leukemia effect by infusing activated T-cells from healthy donors prophylactically, months after recovery from the initial transplant. Investigators are studying whether the activation of donor cells prior to infusion will enhance the patient's ability to "seek and destroy" residual malignant cells while also helping the immune system to fight infection without increasing the immune reaction against the host.

Study Design

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

Conditions

Acute Myelogenous Leukemia

Intervention

Non-myeloablative allogeneic stem cell transplant with prophylactic activated DLI, "Prophylactic" delayed ADLI, "Prophylactic" delayed activated donor lymphocyte infusion

Location

Abramson Cancer Center at University of Pennsylvania
Philadelphia
Pennsylvania
United States
19104

Status

Recruiting

Source

University of Pennsylvania

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:42:35-0400

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Medical and Biotech [MESH] Definitions

An immune response with both cellular and humoral components, directed against an allogeneic transplant, whose tissue antigens are not compatible with those of the recipient.

Agents that destroy bone marrow activity. They are used to prepare patients for BONE MARROW TRANSPLANTATION or STEM CELL TRANSPLANTATION.

Methods of implanting a CELL NUCLEUS from a donor cell into an enucleated acceptor cell. Often the nucleus of a somatic cell is transferred into a recipient OVUM or stem cell (STEM CELLS) with the nucleus removed. This technology may provide means to generate autologous diploid pluripotent cell for therapeutic cloning, and a model for studying NUCLEAR REPROGRAMMING in embryonic stem cells. Nuclear transfer was first accomplished with frog eggs (RANA PIPIENS) and reported in 1952.

The release of stem cells from the bone marrow into the peripheral blood circulation for the purpose of leukapheresis, prior to stem cell transplantation. Hematopoietic growth factors or chemotherapeutic agents often are used to stimulate the mobilization.

The malignant stem cells of TERATOCARCINOMAS, which resemble pluripotent stem cells of the BLASTOCYST INNER CELL MASS. The EC cells can be grown in vitro, and experimentally induced to differentiate. They are used as a model system for studying early embryonic cell differentiation.

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