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项与 Donor Leukocyte Infusion (DLI)(NCI) 相关的临床试验Pilot Study of Radiation-Enhanced Allogeneic Cell Therapy for Progressive Hematologic Malignancy After Allogeneic Hematopoietic Stem Cell Transplantation
Background:
Allogeneic hematopoietic stem cell transplantation (allotransplant) has been used to treat many kinds of cancer that develop in cells from the blood or immune system. After allotransplant, donor cells take over production of the recipient s blood and immune cells, and donor immune cells can directly attack and control tumor. However, for cancers that do not respond to allotransplant, there are no proven cures.
A single treatment with radiation can improve the potency of immune-cell therapies. This is probably because the tumor tissue is damaged in a way that new tumor proteins are exposed, attracting immune cells to the tumor. By giving only a single dose of radiation, the immune cells that are attracted to the tumor are allowed to survive and function in their usual way, traveling throughout the body and educating other immune cells to recognize tumor, and to activate and expand in order to kill the tumor cells. Some research has shown that radiation may have a widespread effect on stimulating the immune system, educating immune cells to recognize and control tumors that have not been radiated.
Objectives:
- To determine whether a single treatment of radiation will help donor immune cells control cancer after allotransplant without causing excessive side effects.
Eligibility:
Recipients: Individuals 18 years of age and older who have blood cancers that have not responded to allotransplant.
Donors: Healthy individuals 18 years of age and older who were previous allotransplant donors for one of the study recipients.
Design:
Donors will provide additional blood immune cells, called lymphocytes, through apheresis. Apheresis involves drawing blood, separating out the lymphocytes, and returning the rest of the blood to the donor.
Recipients will receive a single dose of radiation to the greatest amount of tumor that can be irradiated safely. Researchers will intentionally leave some tumor that will not be radiated in order to evaluate whether there is a widespread response to the treatment.
There are two treatment arms on the study.
Arm 1: Study participants who have donor lymphocytes available and who have not had major complications from the allotransplant will be given a dose of donor cells after they receive radiation, to provide an additional boost to the donor immune response.
Arm 2: Study participants who cannot receive donor lymphocytes because their donor is not available, they received an allotransplant from a partially matched relative, or they have had significant complications from the allotransplant - will receive radiation without additional donor lymphocytes.
All recipients will be followed closely for side effects and for tumor response to radiation with or without donor lymphocytes. Additional tests will be performed, including tumor biopsies, bone marrow samples, and blood draws, in order to study the immune effects of radiation and donor lymphocytes.
A separate, control group of allotransplant recipients will not receive radiation. This group will include participants whose transplant doctors plan to use donor lymphocyte therapy alone to control cancer progression. This group will donate blood immune cells through blood draws and apheresis. These cells will be examined to study the immune effects of receiving donor lymphocytes without radiation.
Allogeneic HSCT Without Preparative Chemotherapy or With Low-Intensity Preparative Chemotherapy Using Sirolimus and Sirolimus-Generated Donor Th2 Cells for Therapy of Refractory Leukemia, Lymphoma, Myeloma, or Myelodysplastic Syndrome
Background:
Patients with cancers of the blood and immune system often benefit from transplants of stem cells from a genetically well-matched sibling. However, severe problems may follow these transplants because of the high-dose chemotherapy and radiation that accompany the procedure. Also, donated immune cells sometimes attack healthy tissues in a reaction called graft-versus-host disease (GVHD), damaging organs such as the liver, intestines and skin. To reduce toxicity of high-dose preparative chemotherapy, this study performs allogeneic transplant after low doses of chemotherapy. In an attempt to improve anti-tumor effects without increasing GVHD, this study uses donor immune cells (T helper 2 (Th2) cells) grown in the laboratory; some patients will receive standard donor immune cells (not grown in laboratory). All patients will receive immune modulating drugs sirolimus and cyclosporine to prevent GVHD.
Objective:
To determine the safety, treatment effects and rate of GVHD in patients receiving transplants that use low-intensity chemotherapy, sirolimus plus cyclosporine, and transplant booster with either Th2 cells or standard immune cells.
Eligibility:
Patients 16 to 75 years of age with acute or chronic leukemia, non-Hodgkin's lymphoma, Hodgkin's disease, multiple myeloma, or myelodysplastic syndrome.
Patients must have a suitable genetically matched sibling donor and adequate kidney, heart and lung function.
Design: The protocol has three treatment groups: cohort 1, Th2 booster at two weeks post-transplant; cohort 2, standard T cell booster at two weeks post-transplant; cohort 3, multiple infusion of Th2 cells.
Condition: Hematologic Neoplasms, Myeloproliferative Disorders
Intervention: Biological; therapeutic allogeneic lymphocytes
Drug: Sirolimus
Study Type: Interventional
Study Design: Primary Purpose: Treatment
Phase: Phase II
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