Clinical Trials Logo

Pure Red Cell Aplasia clinical trials

View clinical trials related to Pure Red Cell Aplasia.

Filter by:

NCT ID: NCT06065852 Recruiting - Fabry Disease Clinical Trials

National Registry of Rare Kidney Diseases

RaDaR
Start date: November 6, 2009
Phase:
Study type: Observational [Patient Registry]

The goal of this National Registry is to is to collect information from patients with rare kidney diseases, so that it that can be used for research. The purpose of this research is to: - Develop Clinical Guidelines for specific rare kidney diseases. These are written recommendations on how to diagnose and treat a medical condition. - Audit treatments and outcomes. An audit makes checks to see if what should be done is being done and asks if it could be done better. - Further the development of future treatments. Participants will be invited to participate on clinical trials and other studies. The registry has the capacity to feedback relevant information to patients and in conjunction with Patient Knows Best (Home - Patients Know Best), allows patients to provide information themselves, including their own reported quality of life and outcome measures.

NCT ID: NCT03966053 Terminated - Clinical trials for Diamond Blackfan Anemia

The Use of Trifluoperazine in Transfusion Dependent DBA

DBA
Start date: September 13, 2019
Phase: Phase 1/Phase 2
Study type: Interventional

Diamond Blackfan anemia (DBA) is a rare inherited pure red cell aplasia. The two main non-stem cell transplant therapeutic options are corticosteroids and red blood cell (RBC) transfusions. About 80% of DBA patients initially respond to corticosteroids, however, half of the patients cannot continue due to side effects or loss of response. These patients are then typically dependent on RBC transfusions throughout life. Each of these treatments is fraught with many side effects and significant morbidity and mortality are potential consequences of hematopoietic stem cell transplantation (SCT). The majority of individuals with DBA have mutations in genes encoding structural proteins of the small or large ribosomal subunit leading to deficiency of the particular ribosomal protein (RP). Using the RP deficient zebrafish embryo model, high throughput drug screens have demonstrated a strong hematologic response to several calmodulin inhibitors. One of these chemicals is trifluoperazine (TFP). TFP treatment of a mouse model of DBA also increased the red blood cell count and the hemoglobin (Hb) levels in the mice. TFP is a FDA-approved typical antipsychotic agent that has been available since 1958 with a well-known safety profile. In the United States, TFP is approved for the short-term treatment of generalized non-psychotic anxiety; treatment or prevention of nausea and vomiting of various causes; and, management of psychotic disorders. This study aims to determine the safety/tolerability of TFP in adult subjects with DBA. TFP's expected dose-limiting toxicity is primarily neurologic (extrapyramidal) when used long-term at typical anti-psychotic doses (range 10-50 mg daily). Non-neurologic adverse effects in subjects with DBA have not been investigated. We will perform a dose escalation study to define the safety and tolerability of lower doses of this agent in subjects with DBA. To mitigate the potential risks of administering TFP to this new population, we will (1) start dosing at dose levels well below those prescribed for psychosis, (2) dose escalate to a maximum of 10 mg daily (the lowest dose typically prescribed for psychosis), and (3) perform weekly safety monitoring. Given the positive signal in DBA animal models and the 60-year clinical experience with higher doses of TFP, this drug warrants a trial in humans to assess tolerability in DBA.

NCT ID: NCT03918265 Recruiting - Clinical trials for Autoimmune Hemolytic Anemia

Tacrolimus Treatment for Refractory Autoimmune Cytopenia

Start date: May 4, 2019
Phase: Phase 4
Study type: Interventional

Autoimmune cytopenia, including autoimmune hemolytic anemia (AIHA), pure red cell aplasia (PRCA), Evans syndrome (ES), usually has good responses to steroids therapies as first line, but there is a considerable percentage of patients who relapse, become refractory or dependent on steroids to maintain an acceptable level of hemoglobin or platelets. 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 tacrolimus for refractory autoimmune cytopenia.

NCT ID: NCT03540472 Recruiting - Clinical trials for Pure Red Cell Aplasia

Tacrolimus Treatment for Refractory PRCA

Start date: June 10, 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 tacrolimus for refractory PRCA.

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

Sirolimus Treatment for Refractory PRCA

Start date: February 1, 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: 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

Sickle-AID
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: NCT01362595 Completed - 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

LeucineDBA
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

PRIMS
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: NCT00314795 Completed - Anemia Clinical Trials

Efficacy and Safety of Peginesatide (AF37702) in the Treatment of Anemia in Participants With Chronic Kidney Disease

Start date: April 6, 2006
Phase: Phase 2
Study type: Interventional

The purpose of this study is to evaluate the ability of peginesatide (AF37702) 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: 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).