- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00000595
Evaluation of Subcutaneous Desferrioxamine as Treatment for Transfusional Hemochromatosis
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
BACKGROUND:
The prognosis of congenital or long-term anemia was formerly limited by the complications of blood transfusion, splenectomy, or infection, problems now largely overcome by sophisticated clinical care. Lifespan is now determined by the rate of myocardial iron deposition, with death occurring from cardiac failure or arrhythmia, usually between the ages of 15 and 25. Endocrine complications and hepatic enlargement are also evident by this age. Deferoxamine increases urinary iron excretion and is the only chelator currently available for chronic administration. Daily administration of deferoxamine results in negative iron balance in most patients by the age of 10; this study was designed to determine whether the onset of cardiac complications was delayed and life prolonged by iron removal.
This trial began in 1978. Its forerunner was a study involving both deferoxamine and ascorbic acid. Although ascorbic acid promotes iron removal, its administration was followed by cardiac deterioration in several patients. In this study, patients receiving subcutaneous deferoxamine were randomized to receive either ascorbic acid or placebo, thereby providing a controlled test of this agent in treatment of iron overload. Sixty-five patients with homozygous beta-thalassemia participated in the long-term chelation trial. Of these, 49 were randomized to the ascorbic acid trial.
Several noninvasive techniques have been developed to evaluate organ function in iron-overloaded patients, thereby facilitating the assessment of chelation therapy. These techniques included chest x-rays, electrocardiograms, echocardiograms, and 24-hour Holter monitoring to assess cardiac function. Liver function was evaluated by standard liver function tests, CAT scan, and live biopsy. During the last six years of the study, hepatic iron stores were measured magnetically with a dual channel superconducting quantum-interference susceptomer. Endocrine function was also assessed by standard tests.
DESIGN NARRATIVE:
All patients received subcutaneous deferoxamine and iron removal was determined by measurement of serum ferritin and periodic non-invasive measurements of liver iron concentration. Clinical status was evaluated by non-invasive testing of cardiac and endocrine function.
The study completion date listed in this record was inferred from the last publication listed in the Citations section of this study record.
Study Type
Phase
- Phase 2
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
Collaborators and Investigators
Investigators
- Neal Young, Laboratory of Hematology, NHLBI
Publications and helpful links
General Publications
- Nienhuis AW, Griffith P, Strawczynski H, Henry W, Borer J, Leon M, Anderson WF. Evaluation of cardiac function in patients with thalassemia major. Ann N Y Acad Sci. 1980;344:384-96. doi: 10.1111/j.1749-6632.1980.tb33677.x.
- Brittenham GM, Griffith PM, Nienhuis AW, McLaren CE, Young NS, Tucker EE, Allen CJ, Farrell DE, Harris JW. Efficacy of deferoxamine in preventing complications of iron overload in patients with thalassemia major. N Engl J Med. 1994 Sep 1;331(9):567-73. doi: 10.1056/NEJM199409013310902.
Study record dates
Study Major Dates
Study Start
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Metabolic Diseases
- Genetic Diseases, Inborn
- Anemia
- Iron Metabolism Disorders
- Metabolism, Inborn Errors
- Anemia, Hemolytic, Congenital
- Anemia, Hemolytic
- Metal Metabolism, Inborn Errors
- Iron Overload
- Hematologic Diseases
- Thalassemia
- beta-Thalassemia
- Hemochromatosis
- Hemosiderosis
- Hemoglobinopathies
- Molecular Mechanisms of Pharmacological Action
- Chelating Agents
- Sequestering Agents
- Iron Chelating Agents
- Siderophores
- Deferoxamine
Other Study ID Numbers
- 401 (Other Identifier: AGORA HCL)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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