View clinical trials related to Leukemia, Myeloid.
Filter by:The objectives of Part 1 of the study were: - To determine the rate of hematologic response (HR) lasting ≥4 weeks in participants with Philadelphia chromosome-positive (Ph+) chronic myeloid leukemia (CML) in the accelerated phase (AP). - To evaluate duration of HR, overall survival, cytogenetic response (CyR), time to blast crisis in CML participants in the AP, improvement of symptomatic parameters, tolerability and safety of STI571 treatment. The objective of the extension (Part 2) was: -To enable participants to have access to study drug and continue study treatment and to decrease data collection to include only overall survival and serious adverse events.
During the Core Phase of the study, participants received STI571 at a dose of 400 milligrams (mg) daily for up to 12 months. Participants completing 12 months of therapy were eligible to continue treatment in the Extension Phase of the study provided that, in the opinion of the investigator, they had benefited from treatment with STI571 and there were no safety concerns.
In this study our hypothesis is that infusion of donor lymphocyte immune cells from the subject's bone marrow donor will activate the subject's immune system to attack their cancer.
There are naturally occuring variations in the genetic makeup of all of us. Some of these variations may contribute to a change in susceptibility toward different diseases or change the prognosis. We are studying these genetic variations in patients with leukemia. The genes we are studying are those which influence detoxification of drugs and toxins.
Childhood leukemias which cannot be cured by chemotherapy alone may be effectively treated by allogeneic bone marrow transplantation. Moreover, for patients with chronic myelogenous leukemia (CML), allogeneic hematopoietic stem cell transplantation (HSCT) is the only proven curative modality of treatment. Patients who have received hematopoietic stem cells from an HLA matched sibling donor have proven to be less at risk for disease relapse and regimen related toxicity. However, about 70% of patients in need of HSCT do not have an HLA matched sibling donor. This necessitates the search for alternative donors, which may increase the risk of a poor outcome. The nature of the hematopoietic stem cell graft has been implicated as a primary factor determining these outcomes. The standard stem cell graft has been unmanipulated bone marrow, but recently several advantages of T-lymphocyte depleted bone marrow and mobilized peripheral blood progenitor cells (PBPC) have been demonstrated. However, T-cell depletion may increase the risk of infectious complications and leukemic recurrence while an unmanipulated stem cell graft may increase the risk of graft vs. host disease (GVHD). A key element in long range strategies in improving outcomes for patients undergoing matched unrelated donor (MUD) HSCT is to provide the optimal graft. The primary objective of this clinical trial is to estimate the incidence of acute GVHD in pediatric patients with hematologic malignancies who receive HSCT with an unmanipulated marrow graft. The results of this study can be used as the foundation for future trials related to engineering unrelated donor graft.
This is a study looking at all-trans retinoic acid in combination with standard induction and consolidation therapy in older patients with newly diagnosed acute myeloid leukemia (AML).
This trial is a study on all-trans retinoic acid in combination with induction and consolidation therapy as well as pegfilgrastim after consolidation therapy in younger patients with newly diagnosed acute myeloid leukemia (AML).
The concept of the investigators risk-adapted multicenter treatment trial for younger adults, AML HD98A, is based on the results of the AML HD93 trial and on published data. Definition of risk groups is different compared to the AML HD93 trial; high-risk: refractory disease after first induction therapy and/or high risk karyotype [abn(3q), -5/5q-, -7/7q-, abn(12p), abn(17p), complex]; intermediate-risk: complete remission after induction therapy and intermediate risk karyotype [normal, abn(11q23), abn(16q22), other rare aberrations]; low-risk: complete remission after induction therapy and low risk karyotype [t(8;21)]. Patients exhibiting a t(15;17) were treated in a separated trial (APL HD95). Treatment consists of a first induction therapy with ICE followed by a second cycle ICE in case of response to first induction therapy. Patients with refractory disease after first induction therapy are assigned to a salvage therapy with A-HAM (all-trans retinoic acid, high-dose cytarabine and mitoxantrone) and the search for potential hematopoietic stem cell donors is extended from the family to unrelated persons. All patients achieving a CR after induction therapy with ICE are assigned to a first consolidation therapy with HAM. For intermediate-risk patients a peripheral stem cell or a bone marrow harvest are intended during the hematological recovery after the first consolidation. Second consolidation therapy was stratified according to the risk definition. For high risk patients a allogeneic transplantation is assigned from a related or unrelated donor preferentially after a dose-intensified conditioning therapy. All patients with intermediate risk and an HLA-matched family donor are assigned to allogeneic transplantation. Intermediate-risk patients without a family donor and normal karyotype at diagnosis are randomized between an autologous stem cell transplantation and a second course of HAM. The other intermediate-risk patients are assigned to autologous transplantation. For low-risk patients a second course of HAM is assigned.
Relapsed disease is the most common cause of death in children with hematological malignancies. Patients who fail high-intensity conventional chemotherapeutic regimens or relapse after stem cell transplantation have a poor prognosis. Toxicity from multiple therapies and elevated leukemic/tumor burden usually make these patients ineligible for the aggressive chemotherapy regimens required for conventional stem cell transplantation. Alternative options are needed. One type of treatment being explored is called haploidentical transplant. Conventional blood or bone marrow stem cell transplant involves destroying the patient's diseased marrow with radiation or chemotherapy. Healthy marrow from a donor is then infused into the patient where it migrates to the bone marrow space to begin generating new blood cells. The best type of donor is a sibling or unrelated donor with an identical immune system (HLA "match"). However, most patients do not have a matched sibling available and/or are unable to identify an acceptable unrelated donor through the registries in a timely manner. In addition, the aggressive treatment required to prepare the body for these types of transplants can be too toxic for these highly pretreated patients. Therefore doctors are investigating haploidentical transplant using stem cells from HLA partially matched family member donors. Although haploidentical transplant has proven curative in many patients, this procedure has been hindered by significant complications, primarily regimen-related toxicity including graft versus host disease (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 patient's (the host) body tissues 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 infection. However, the presence of T cells in the graft may offer a positive effect called graft versus malignancy or GVM. With GVM, the donor T cells recognize the patient's malignant cells as diseased and, in turn, attack these diseased cells. For these reasons, a primary focus for researchers is to engineer the graft to provide a T cell depleted product to reduce the risk of GVHD, yet provide a sufficient number of cells to facilitate immune reconstitution, graft integrity and GVM. In this study, patients were given a haploidentical graft engineered to with specific T cell parameter values using the CliniMACS system. A reduced intensity, preparative regimen was used to reduce regimen-related toxicity and mortality. The primary goal of this study is to evaluate overall survival in those who receive this study treatment.
The purpose of this study is to evaluate the ability of sirolimus to prevent graft versus host disease (GVHD) in patients following stem cell transplant from a related donor.