View clinical trials related to Preleukemia.
Filter by:RATIONALE: Drugs used in chemotherapy such as cytarabine use different ways to stop cancer cells from dividing so they stop growing or die. 3-AP may stop the growth of cancer cells by blocking the enzymes necessary for cancer cell growth and may help cytarabine kill more cancer cells by making them more sensitive to the drug. PURPOSE: Phase I trial to study the effectiveness of combining cytarabine with 3-AP in treating patients who have relapsed or refractory hematologic cancer.
RATIONALE: Adjusting the dose of drugs used in chemotherapy such as cyclophosphamide may decrease side effects while stopping cancer cells from dividing so they stop growing or die. Radiation therapy uses high-energy x-rays to damage cancer cells. Stem cell transplantation may be able to replace immune cells that were destroyed by chemotherapy and radiation therapy used to kill cancer cells. PURPOSE: Phase I trial to study the effect on the body of dose-adjusted cyclophosphamide combined with total-body irradiation and donor stem cell transplantation in treating patients who have hematologic cancer.
The purpose of this study is to determine the effects of the oral iron chelator Deferasirox on liver iron content after one year of treatment in patients with iron overload from repeated blood transfusions. Beta-thalassemia patients unable to be treated with deferoxamine or patients with rare chronic anemias such as Myelodysplastic Syndrome, Fanconi's Syndrome, Blackfan-Diamond Syndrome, and Pure Red Blood Cell Anemia are eligible for this study. Liver iron content will be measured by liver biopsy at the beginning of the study and after one year of treatment. However, those patients living in the San Francisco/Oakland area may have a SQUID in place of the liver biopsy if the biopsy is not medically possible for them. The SQUID is a non-invasive magnetic means to measure liver iron content.
Bone marrow transplantation (BMT) is a risky procedure. If doctors could reduce the complications, BMT would be safer to use for a wider range of conditions. The purposes of this study are - to prevent graft rejection by increasing the amount of immunosuppression and by giving some lymphocytes from the donor before transplant; - to prevent graft-versus-host disease (GVHD) by transplanting T-cell depleted stem cells; - to improve the immune effect against residual leukemia by the add-back of donor lymphocytes before transplant and six or more weeks after transplant. Beyond the standard transplant protocol, study participants will undergo additional procedures. First, along with total body irradiation, patients will receive two drugs (a high dose of cyclophosphamide and fludarabine) to suppress immunity and prevent rejection of the transplant. Second, four days before the transplant, patients will be given donor lymphocytes that have been irradiated to make them incapable of causing GVHD. On the day of the transplant, patients will receive an infusion of T-cell depleted bone marrow stem cells. Finally, patients will receive two doses of add-back donor T-cells (45 and 100 days post transplant) and the immunosuppressive drug cyclosporine starting on day 44 until about six months after transplant. Study participants must be between the ages of 10 and 56 and have a family member who is a suitable stem cell donor match.
This phase I trial is studying how well ipilimumab works after allogeneic stem cell transplant in treating patients with persistent or progressive cancer. Monoclonal antibodies can locate cancer cells and either kill them or deliver cancer-killing substances to them without harming normal cells.
RATIONALE: Umbilical cord blood transplantation may be able to replace immune cells that were destroyed by the chemotherapy or radiation therapy that was used to kill cancer cells. PURPOSE: Phase II trial to study the effectiveness of allogeneic umbilical cord blood transplantation in treating patients who have leukemia, lymphoma, or nonmalignant hematologic disorders.
RATIONALE: Combining antithymocyte globulin with combination chemotherapy before donor peripheral stem cell transplantation may reduce the chance of developing graft-versus-host disease following transplantation. PURPOSE: Phase I/II trial to study the effectiveness of combining antithymocyte globulin with busulfan and cyclophosphamide in reducing graft-versus-host disease in patients who are undergoing donor stem cell transplantation for myelodysplastic syndrome or other myeloproliferative disorder.
RATIONALE: Giving chemotherapy and total-body irradiation before a donor peripheral stem cell transplant helps stop the growth of cancer and abnormal cells and helps stop the patient's immune system from rejecting the donor's stem cells. When the stem cells from a related donor, that do not exactly match the patient's blood, are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. PURPOSE: This phase II trial is studying how well giving chemotherapy with or without radiation therapy followed by donor stem cell transplant works in treating patients with hematologic cancer.
RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Umbilical cord blood transplantation may be able to replace cells destroyed by chemotherapy. PURPOSE: Phase I trial to study the effectiveness of combination chemotherapy followed by umbilical cord blood transplantation in treating patients who have hematologic cancer or severe aplastic anemia.
RATIONALE: Giving low doses of chemotherapy before a donor peripheral blood stem cell transplant helps stop the growth of cancer cells. It also stops the patient's immune system from rejecting the donor's stem cells. The donated stem cells may replace the patient's immune system and help destroy any remaining cancer cells (graft-versus-tumor effect). Giving an infusion of the donor's T cells (donor lymphocyte infusion) after the transplant may help increase this effect. Sometimes the transplanted cells from a donor can also make an immune response against the body's normal cells. Giving immunosuppressive therapy before or after the transplant may stop this from happening. PURPOSE: This phase II trial is studying how well chemotherapy followed by donor peripheral stem cell transplant works in treating patients with hematologic cancer or aplastic anemia.