View clinical trials related to Preleukemia.
Filter by:RATIONALE: Tests that measure certain changes in blood in patients at high risk of cytomegalovirus infection may help doctors learn more about predicting cytomegalovirus infection after donor stem cell transplant. PURPOSE: This clinical trial is studying tests that measure changes in the blood in patients at high risk of cytomegalovirus infection after undergoing donor bone marrow transplant or peripheral stem cell transplant.
One of two different doses of thymoglobulin will allow bone marrow engraftment with minimal Graft-versus-Host Disease and allow adequate immune response to allow the transplanted stem cells to replace the tumor cells.
This is a randomized, open label, multicenter, Phase 2 study comparing two dose schedules of Telintra in patients with Low or Intermediate-1 risk MDS. Patients at least 18 years of age presenting with histologically confirmed Low to Intermediate-1 risk MDS with documented significant cytopenia for at least two months by the IWG criteria are eligible.
The prognosis of pediatric patients with hematologic malignancies whose disease is primarily refractory or those who experience a chemotherapy resistant bone marrow relapse is extremely poor. When new agents or chemotherapeutic regimens are unable to induce remission in this patient population, hematopoietic stem cell transplant (HSCT) is also a poor alternative. Thus, in this very high risk group, additional attempts at remission induction with various combinations of chemotherapy alone will unlikely improve outcome and will contribute to overall toxicity. Alternative therapies are needed in these patients with chemotherapy resistant disease. Immunotherapy with natural killer (NK) cell infusion has the potential to decrease toxicity and induce hematologic remission. NK cells can kill target cells, including leukemia cells, without prior exposure to those cells. In patients undergoing allogeneic HSCT, several studies have demonstrated the powerful effect of NK cells against leukemia. Furthermore, NK cell infusions in patients with primary refractory or multiple-relapsed leukemia have been shown to be well tolerated and void of graft-versus-host disease effects. In this high risk group, complete leukemic remission has been observed in several of these patients after NK cell infusion. With the current technology available at St. Jude, we have developed a procedure to purify NK cells from adult donors. This protocol will assess the safety of chemotherapy and IL-2 administration to facilitate transient NK-cell engraftment in research participants who have chemotherapy refractory hematologic malignancies including acute lymphoblastic leukemia, chronic myelogenous leukemia, juvenile myelomonocytic leukemia, myelodysplastic syndrome, or non-Hodgkin's lymphoma. In this same cohort, we will also intend to explore the efficacy of NK cells infused in those participants who have chemotherapy refractory disease.
This is an open-label, non-randomised, multi-centre phase I-II study of CHR-2797 administered orally once a day. The study involves two distinct phases: - Phase I: an open-label, dose-escalating phase of the study to explore the safety, tolerability, and pharmacokinetics (PK) of CHR-2797. - Phase II: the recommended dose level of CHR-2797, as determined in phase I, will be administered to a further cohort of approximately 40 patients to determine whether CHR-2797 has sufficient biological activity against the disease(s) under study.
The primary objective of this study is to evaluate the safety, tolerability, and efficacy of temozolomide in acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) participants who are not candidates for standard induction therapy and exhibit low MGMT expression.
RATIONALE: Giving chemotherapy and total marrow irradiation before a donor umbilical cord blood or hematopoietic stem cell 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 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. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells. Giving cyclosporine and mycophenolate mofetil after the transplant may stop this from happening. PURPOSE: This phase I trial is studying the side effects and best dose of total marrow irradiation when given together with combination chemotherapy and umbilical cord blood hematopoietic stem cell transplant in treating patients with acute leukemia, acute myeloid leukemia or multiple myeloma that did not respond to previous therapy.
Objectives: 1. To evaluate disease free survival after Campath 1H-based in vivo T-cell depletion and non-myelo-ablative ablative stem cell transplantation in patients with hematologic malignancies. 2. To evaluate the incidence and severity of acute and chronic GVHD after Campath 1H-based in vivo T-cell depletion, in patients with hematologic malignancies undergoing non-myelo-ablative stem cell transplantation. 3. To evaluate engraftment and chimerism after Campath 1H-based in vivo T-cell depletion and non-myelo-ablative ablative stem cell transplantation in patients with hematologic malignancies.
This is a prospective, non-randomized multi-center multi-national study to evaluate the chimerism measured by STR and SNP in patients with hypoplastic RC and normal karyotype transplanted with a preparative regimen of reduced intensity. Primary objectives: - To study hematopoietic chimerism in whole blood and different cell population (CD14, CD15, CD 56, CD3, CD19) as well as in dendritic cells and regulatory T-cells after SCT with RIC in patients with RC - To compare the results of chimerism obtained with standard STR PCR (sensitivity 1%) with those obtained with SNP PCR (sensitivity 0.1- 0.01%) Secondary objectives: - To evaluate the relationship between mixed chimerism and hematological engraftment, OS and EFS - To study the impact of mixed chimerism in plasmacytoid dendritic and regulatory T-cells on the incidence of acute and chronic GVHD
The purpose of this study is to determine if MultiStem® can safely be given to patients with acute leukemia, chronic myeloid leukemia, or myelodysplasia after they have received hematopoietic stem cell transplantation.