View clinical trials related to Myelodysplastic Syndrome.
Filter by:Blood and marrow stem cell transplant has improved the outcome for patients with high-risk hematologic malignancies. However, most patients do not have an appropriate HLA (immune type) matched sibling donor available and/or are unable to identify an acceptable unrelated HLA matched donor through the registries in a timely manner. Another option is haploidentical transplant using a partially matched family member donor. Although haploidentical transplant has proven curative in many patients, this procedure has been hindered by significant complications, primarily regimen-related toxicity including GVHD and infection due to delayed immune reconstitution. These can, in part, be due to certain white blood cells in the graft called T cells. GVHD happens when the donor T cells recognize the body tissues of the patient (the host) are different and attack these cells. Although too many T cells increase the possibility of GVHD, too few may cause the recipient's immune system to reconstitute slowly or the graft to fail to grow, leaving the patient at high-risk for significant infection. For these reasons, a primary focus for researchers is to engineer the graft to provide a T cell dose that will reduce the risk for GVHD, yet provide a sufficient number of cells to facilitate immune reconstitution and graft integrity. Building on prior institutional trials, this study will provide patients with a haploidentical graft engineered to specific T cell target values using the CliniMACS system. A reduced intensity, preparative regimen will be used in an effort to reduce regimen-related toxicity and mortality. Two groups of patients were enrolled on this study. One group included those with high-risk hematologic malignancies and the second group included participants with refractory hematologic malignancies or undergoing a second transplant. The primary aim of the study was to estimate the relapse rate in the one group of research participants with refractory hematologic malignancies or those undergoing second allogeneic transplant. Both groups will be followed and analyzed separately in regards to the secondary objectives. This study was closed to accrual on April 2006 as it met the specific safety stopping rules regarding occurrence of severe graft vs. host disease. Although this study is no longer open to accrual, the treated participants continue to be followed as directed by the protocol.
The purpose of this study is to assess the effects of the combination of all-trans retinoic acid in combination with one of two schedules of Bryostatin 1 in patients with myelodysplasia and acute myelogenous leukemia.
The purpose of this trial is to determine if patients with hematologic diseases who have a HLA 6/6 matched related donor and are not eligible for a standard myeloablative stem cell transplant will have less severe graft versus host disease (GVHD), transplant related mortality, and less graft failure when treated with a non-myeloablative T-cell depleted stem cell transplant.
The purpose of this study is to determine if recipients of non-myeloablative ex-vivo T-cell depleted peripheral blood (PBSC) stem cell transplantation using a mismatched related donor will have less severe graft versus host disease (GVHD), transplant related mortality, and less graft failure compared to alternative haploidentical stem cell transplantation.
To study if decitabine can help to control Myelodysplastic Syndrome (MDS) in patients who have failed on therapy with azacytidine, the current standard of therapy.
The purpose of this trial is to examine the safety and efficacy of deferasirox in patients with Myelodysplastic Syndrome (MDS) and chronic iron overload from blood transfusions.
MS-275 may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as azacitidine, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving MS-275 together with azacitidine may kill more cancer cells. This phase I trial is studying the side effects and best dose of MS-275 when given together with azacitidine in treating patients with myelodysplastic syndromes, chronic myelomonocytic leukemia, or acute myeloid leukemia.
This study hopes to show that specially treated umbilical cord cells, called stem cells, can be safely given to a person after they receive chemoradiation therapy or chemotherapy for their illness. During chemoradiation therapy or chemotherapy, a person loses all of the cells that are needed to make the different types of cells in their blood, including their immune system cells. These cells must be replaced in order for the blood and immune systems to work properly. Some people receive bone marrow transplants or other types of stem cell transplants to get the cells they need. CB001 is being developed as an option for people who need bone marrow transplants or other types of transplants to replace those cells. It is also being developed for people who do not have the option of other types of transplants.
The goal of this clinical research study is to study how effective treatments with clofarabine alone and clofarabine given in combination with ara-C are in the treatment of leukemia and high-risk myelodysplastic syndrome (MDS) in patients who are 60 years or older. The safety of these treatments will also be compared.
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