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Red-Cell Aplasia, Pure clinical trials

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NCT ID: NCT03364764 Recruiting - Clinical trials for Pure Red Cell Aplasia

Sirolimus Treatment for Refractory PRCA

Start date: January 2018
Phase: Phase 4
Study type: Interventional

Pure red cell aplasia (PRCA) is a kind of anemia characterized by severe reticulocytopenia and obvious bone marrow erythroblastic cells decreased. Cyclosporine and /or steroids are the first line therapy but some patients were refractory or intolerance to the treatment. The effects of the second line therapy are also not satisfactory and sometimes not available. The investigators aim to explore the efficacy and side-effect of sirolimus for refractory PRCA.

NCT ID: NCT03333486 Recruiting - Clinical trials for Acute Myeloid Leukemia

Fludarabine Phosphate, Cyclophosphamide, Total Body Irradiation, and Donor Stem Cell Transplant in Treating Patients With Blood Cancer

Start date: December 7, 2017
Phase: Phase 2
Study type: Interventional

This phase II trial studies how well fludarabine phosphate, cyclophosphamide, total body irradiation, and donor stem cell transplant work in treating patients with blood cancer. Drugs used in chemotherapy, such as fludarabine phosphate and cyclophosphamide, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Radiation therapy uses high energy x-rays to kill cancer cells and shrink tumors. Giving chemotherapy and total-body irradiation before a donor peripheral blood stem cell transplant helps stop the growth of cells in the bone marrow, including normal blood-forming cells (stem cells) and 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. The donated stem cells may also replace the patient?s immune cells and help destroy any remaining cancer cells.

NCT ID: NCT03214354 Recruiting - Sickle Cell Disease Clinical Trials

Nonmyeloablative Stem Cell Transplant in Children With Sickle Cell Disease and a Major ABO-Incompatible Matched Sibling Donor

Start date: July 5, 2017
Phase: Phase 2
Study type: Interventional

The aim of this study to evaluate the safety and efficacy of a nonmyeloablative conditioning regimen for allogeneic hematopoietic stem cell transplantation (HSCT) in pediatric patients with sickle cell disease (SCD) who have a matched related major ABO-incompatible donor. The nonmyeloablative regimen will use alemtuzumab, total body irradiation (TBI) and sirolimus for immune suppression. This study will expand the access of HSCT for patients with SCD who are currently not eligible because of donor restrictions.

NCT ID: NCT02648126 Enrolling by invitation - Clinical trials for Renal Insufficiency, Chronic

Pure Red Cell Aplasia in Patients With Chronic Kidney Disease and in Use of Epoetin Alfa

Start date: November 2015
Phase: Phase 4
Study type: Interventional

The purpose of this study is to determine occurrence of pure red cell aplasia in a group of participants with chronic renal insufficiency and with resistance criteria to epoetin alfa treatment.The investigational product is producted by Bio-Manguinhos / Fiocruz (BIO-EPO) and it is provided by the Unified Health System.

NCT ID: NCT01362595 Active, not recruiting - Clinical trials for Diamond Blackfan Anemia

Pilot Phase I/II Study of Amino Acid Leucine in Treatment of Patients With Transfusion-Dependent Diamond Blackfan Anemia

Start date: June 2013
Phase: Phase 1/Phase 2
Study type: Interventional

This study will determine the safety and possibility of giving the amino acid, leucine, in patients with Diamond Blackfan anemia(DBA)who are on dependent on red blood cell transfusions. The leucine is expected to produce a response in patients with DBA to the point where red blood cell production is increased. Red cell transfusions can then be less frequent or possibly discontinued. The investigators will study the side effects, if any, of giving leucine to DBA patients. Leucine levels of leucine will be obtained at baseline and during the study. The drug leucine will be provided in capsule form and taken 3 times a day for a total of 9 months.

NCT ID: NCT00391287 Completed - Clinical trials for Chronic Kidney Failure

Surveillance Study to Estimate the Incidence of Pure Red Blood Cell Aplasia Among Patients With Chronic Kidney Failure

Start date: June 2006
Phase: Phase 4
Study type: Observational

The purpose of this study is to estimate the incidence rate of pure red cell aplasia (PRCA; aplastic anemia) mediated by erythropoietin (EPO) antibodies in patients who are receiving subcutaneous (s.c.) epoetin alfa (polysorbate 80 formulation) for the treatment of anemia associated with chronic renal failure (CRF), and to compare this incidence rate to the incidence rate with s.c. exposure to other currently marketed recombinant erythropoietin products (epoetin alfa, epoetin beta, darbepoetin alfa), with adjustment of duration for which the drug is given to the patient. The study will also examine the impact of the pattern of using mixed s.c. exposure to multiple erythropoietin products occurring in this patients, and the impact of the time from which the treatment is started to the onset of PRCA.

NCT ID: NCT00315419 Active, not recruiting - Clinical trials for Myelodysplastic Syndromes

Identifying Characteristics of Bone Marrow Failure Syndromes

Start date: April 2006
Phase: N/A
Study type: Observational

Bone marrow failure syndromes (BMFS) are rare disorders characterized by dysfunctional hematopoietic stem cells, which give rise to all red and white blood cells. The deficiency of blood cells, or cytopenia, caused by this malfunction leads to an assortment of diseases and disorders, all of which are characterized as BMFS. Because these diseases are rare, conducting research on them is difficult, and standards of treatment for most BMFS have yet to be developed. This study will collect clinical and laboratory data from people with BMFS to identify the characteristics and biological markers associated with these diseases over time. This information will assist doctors and researchers to develop better therapies and diagnostic tests that will help improve the management of BMFS and cytopenias.

NCT ID: NCT00314795 Completed - Clinical trials for Chronic Kidney Disease

Efficacy and Safety of Peginesatide in the Treatment of Anemia in Patients With Chronic Kidney Disease

Start date: April 2006
Phase: Phase 2
Study type: Interventional

The purpose of this study is to evaluate the ability of peginesatide to increase and maintain increased hemoglobin levels in participants with chronic kidney disease (CKD) (either not on dialysis, receiving regular hemodialysis or peritoneal dialysis, or following renal transplant) with confirmed antibody-mediated pure red cell aplasia (PRCA).

NCT ID: NCT00229619 Completed - Anemia, Aplastic Clinical Trials

Rituximab to Treat Moderate Aplastic Anemia, Pure Red Cell Aplasia, or Diamond Blackfan Anemia

Start date: September 2005
Phase: Phase 2
Study type: Interventional

This study will test whether the immune-suppressing drug rituximab can increase blood counts and reduce the need for transfusions in patients with moderate aplastic anemia, pure red cell aplasia, or Diamond Blackfan anemia. These are rare and serious blood disorders in which the immune system turns against bone marrow cells, causing the bone marrow to stop producing red blood cells in patients with pure red cell aplasia and Diamond Blackfan anemia, and red blood cells, white blood cells and platelets in patients with aplastic anemia. Rituximab is a laboratory-made monoclonal antibody that recognizes and destroys white blood cells called lymphocytes that are responsible for destroying bone marrow cells in these diseases. The drug is currently approved by the Food and Drug Administration for treating patients with B-cell non-Hodgkin lymphoma, a disease of white blood cells.

NCT ID: NCT00211068 Completed - Clinical trials for Pure Red-cell Aplasia

A Study of Risk Factors for Anti-erythropoietin Antibody Positive Pure Red Cell Aplasia Among Patients With Chronic Kidney Disease Receiving Epoetin Alfa

Start date: March 2004
Phase: Phase 4
Study type: Observational

The purpose of this study is to collect historical occurrences of risk factors that are potentially associated with the development of anti-erythropoietin (EPO) antibody positive pure red cell aplasia (PRCA) in participants with chronic kidney disease who have been recently treated with epoetin alfa (EPREX).