Active clinical trials for "Preleukemia"

RATIONALE: Voriconazole may be effective in preventing systemic fungal infections following chemotherapy. PURPOSE: Phase II trial to study the effectiveness of voriconazole in preventing systemic fungal infections in children who have neutropenia after receiving chemotherapy for leukemia, lymphoma, or aplastic anemia or in preparation for bone marrow or stem cell transplantation.

This study will evaluate the safety of autologous T cells that have been immunized ex vivo with patient-specific MDS stem cell neoantigens in patients with MDS.

Registry participants with advanced malignancy or myelodysplasia will have a sample of their tumor or tissue analysed for genetic alterations using next generation sequencing (NGS) performed in a lab that has been certified to meet a high quality standard. Treatments and outcomes will be reported to the registry to allow further understanding of how genetic differences can lead to better diagnosis and treatments.

Myelodysplastic syndrome (MDS) is widely recognized as a clonal hematopoietic stem cell disorder. Decitabine has been approved for the treatment of all subtypes of myelodysplastic syndrome (MDS). However, the use of decitabine is often limited by its severe toxicity represented by myelosuppression even at relatively low doses. In lower-risk patients (including IPSS low and int-1 risk groups), treatment mainly aims at improving cytopenias, especially anemia. However, although several drugs may improve anemia, sometimes durably, most of lower risk MDS eventually require red blood cell (RBC) transfusions during their disease course. Long term RBC transfusions lead to iron overload mainly due to an increase in reticulo-endothelial iron recycling.Cardiac, liver and endocrine (diabetes mellitus) dysfunction due to iron overload and often leading to fatal outcome has been reported in heavily transfused lower risk MDS patients. To date, the optimal regimen for decitabine treatment is not well established. In this study, we perform a prospective analysis to explore the decitabine schedule for the treatment of lower risk myelodysplastic syndrome patients with transfusion dependent.

This phase I trial studies the side effects and best way to give natural killer cells and donor umbilical cord blood transplant in treating patients with hematological malignancies. Giving chemotherapy with or without total body irradiation before a donor umbilical cord blood transplant helps stop the growth of cancer cells. It may also stop the patient's immune system from rejecting the donor's stem cells. When the healthy stem cells and natural killer cells from a donor are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets.

Allo - hematopoietic stem cell transplantation is currently the only way to cure myelodysplastic syndrome /acute leukemia . The existing experimental results showed that decitabine and 5-azacytidine up-regulated the expression of tumor Ags on leukemic blasts in vitro and expanded the numbers of immunomodulatory T regulatory cells in animal models. Reasoning that decitabine might selectively augment a graft versus leukemia effect, the investigators used decitabine administration after allogeneic stem cell transplantation to studied the immunologic sequelae.

The proposed phase II trial is a multicenter, randomized, open-label study that will evaluate the efficacy and safety of azacitidine alone or in combination with lenalidomide in high-risk Myelodysplastic Syndrome (MDS) or Acute Myeloid Leukemia (AML) with a karyotype including del(5q). The primary objective will be to evaluate the efficacy in terms of response according to International Working Group (IWG) criteria for MDS and AML after 6 cycles of azacitidine or azacitidine + lenalidomide treatment, or at end of study if this occurs at an earlier time point.

RATIONALE: Conditioning with total body irradiation (TBI) and fludarabine, cyclophosphamide and anti-thymocyte globulin may induce the engraftment cross the immunologic barrier in the setting of HLA-haploidentical allogeneic hematopoietic cell transplantation. In addition, T-cell depletion may contribute to prevent developing severe acute graft versus host disease (GVHD) in haploidentical transplantation. PURPOSE: This phase I/II trial is to evaluate the safety and efficacy of TBI, fludarabine, cyclophosphamide and antithymocyte globulin with T-cell depleted graft from haploidentical donors in treating patients with acute leukemia and myelodysplastic syndrome.

RATIONALE: Studying samples of semen from cancer survivors in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This phase I research study is looking at the presence of donor-derived DNA in semen samples form cancer survivors who underwent donor stem cell transplant.

The purpose of this study is to evaluate the safety and efficacy of mesenchymal stem cells (MSCs) derived from human umbilical cord/placenta at a dose of 1.0E+6 MSC/kg on the subjects for refractory anemia (RA) and refractory anemia with ring sideroblast (RARS) of myelodysplastic syndromes (MDS).