View clinical trials related to Hematologic Diseases.
Filter by:Approximately 40% of the patients with myelodysplastic syndrome (MDS) die as a consequence of their cytopenia. As in aplastic anemia, the cytopenia of MDS may be partly due to cytotoxic T cell activity. Immunosuppressive therapy may therefore reverse the cytopenia. In a phase II pilot study of anti-thymocyte globin (ATG) to treat myelodysplastic syndrome (MDS); 41% of patients (61% of patients with refractory anemia) have responded in terms of transfusion independence. Recently, Jonasova et al [32] reported a 82% substantial hematological response rate in 18 patients with MDS of the refractory anemia (RA) subtype treated with cyclosporine alone. Just over 50% of the patients in this series had MDS of the hypocellular type. Cyclosporine alone if indeed efficacious would be a powerful therapeutic option that could be readily used by hematologists in the community to treat patients with MDS. This efficacy needs to be proven in a larger study which includes patients with the other subtypes of MDS and more patients with the non-hypocellular forms of MDS (which constitute approximately 70% of the cases in the community). As MDS is a heterogeneous group of disorders, a randomized comparison with the other immunomodulating intervention of proven benefit, ATG, is appropriate. In this randomized study patients with MDS will receive either ATG alone or cyclosporine alone.
Diamond Blackfan anemia (DBA) is a condition in which the bone marrow is underdeveloped. DBA is considered a congenital disease, meaning patients are born with it. In DBA there is a lack of cells that give rise to red blood cells. The other elements produced in the bone marrow, such as white blood cells and platelets, are normal. Standard treatments used for this disorder such as steroids and bone marrow transplants are associated with failure, relapse, side-effects, increased morbidity, and even death. Two drugs, antithymocyte globulin (ATG) and cyclosporin have been used to treat DBA, but have only provided occasional responses. No study has ever combined these two drugs for the treatment of DBA. This study is designed to explore the combined use of ATG and cyclosporine as a rational approach to the treatment of DBA.
The Hematology Service provides hematology consultations for patients at the Clinical Center and participates in the training of hematology fellows. Patients with a broad range of hematologic disorders must be available in order for the senior staff of the Service to maintain clinical expertise and to provide the breadth of experience necessary for the fellowship program. The purpose of this protocol is to meet these needs by allowing the Hematology Service to see patients with a spectrum of hematologic diseases not studied on existing research protocols at the NIH. These patients will be evaluated over the course of several outpatient visits and returned to the care of their referring physicians.This study was developed to evaluate and possibly treat patients with blood disorders. The Hematology Service of the National Institutes of Health is responsible for the care of patients participating in research studies. In addition the Hematology Service also provides consultation for small groups of patients with blood disorders that have not been diagnosed or that may need special testing. This study will also provide doctors at the NIH the opportunity to learn more about a wide range of blood disorders and conditions. Patients participating in this study will be evaluated over the course of several outpatient visits and will continue to be cared for by their regular physician.
This study is designed to allow the evaluation, follow-up, and medical care of patients with blood disorders not currently participating in a research study being conducted by the Hematology Branch of the National Heart, Lung and Blood Institute (NHLBI) or not being screened for participation in a study. The purpose of this study is to allow investigation into the blood disorders of patients in order to teach, learn, and gather more information about diseases of the blood. In addition, this study allows researchers the opportunity to evaluate patients referred to the Hematology Branch of the NHLBI with rare or undiagnosed diseases of the blood. This may be potentially beneficial to the patient and at the same time contribute to the development of new research ideas.
This is a prospective, randomized Phase III trial of FLAC chemotherapy with GM-CSF versus PIXY321 in advanced breast cancer. The primary endpoints of this study will be the duration of thrombocytopenia and the time to recovery of platelets to 50,000/microliters. Other clinical endpoints will include the depth and duration of leukopenia, neutropenia, and anemia, the platelet and RBC transfusion requirements, and the number of documented instances of sepsis and hospitalizations for fever and neutropenia. Laboratory correlates will include the detailed evaluation of the effects on circulating hematopoietic progenitor cells by GM-CSF and PIXY321 and the potential effects these agents have on the bone marrow micro-environment. After 5 cycles of FLAC with GM-CSF versus PIXY321, patients will be treated with 5 cycles of 96 hour infusional taxol. The goal of this part of the study will be to assess the toxicity and feasibility of administering infusional taxol following dose-intensive FLAC chemotherapy.
The purpose of the TCRN is to accelerate research in the management of thalassemia, standardize existing treatments, and evaluate new ones in a network of clinical centers in North America. The emphasis will be on clinical trials that help identify optimal therapy. Therapeutic trials may involve investigational drugs, drugs already approved but not currently used, and drugs currently used.
To evaluate if HLA-mismatched, unrelated-donor umbilical cord blood stem and progenitor cell units (UCBU) offered a clinically acceptable alternative to matched unrelated-donor allogeneic bone marrow for transplantation with 180-day disease free survival as the endpoint. HLA typing was performed using DNA-base high resolution methods to determine HLA alleles. Patients with "true" HLA 3/6 and 4/6 matches were evaluated. In addition, a separate study in adults addressed the problem of limited cell dose and engraftment failure. The study was not planned as a randomized comparative clinical trial. Instead, it is a phase II/III efficacy study.
To determine whether hydroxyurea prevents the onset of chronic end organ damage in young children with sickle cell anemia.
To determine the therapeutic effects of anti-thymocyte globulin (ATG) in patients with aplastic anemia and related bone marrow failure diseases.
To determine whether deferoxamine prevented the complications of transfusional iron overload.