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Evaluation of Subcutaneous Desferrioxamine as Treatment for Transfusional Hemochromatosis

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00000595
First Posted: October 28, 1999
Last Update Posted: November 26, 2013
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)
  Purpose
To determine whether deferoxamine prevented the complications of transfusional iron overload.

Condition Intervention Phase
Anemia (Iron-Loading) Beta-Thalassemia Hematologic Diseases Hemoglobinopathies Thalassemia Iron Overload Hemochromatosis Drug: deferoxamine Phase 2

Study Type: Interventional
Study Design: Primary Purpose: Treatment

Resource links provided by NLM:


Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date: January 1978
Study Completion Date: September 1994
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.

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   5 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria
Males and females, 5 years or older, with transfusional hemochromatosis.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00000595


Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
Investigators
OverallOfficial: Neal Young Laboratory of Hematology, NHLBI
  More Information

Publications:
ClinicalTrials.gov Identifier: NCT00000595     History of Changes
Other Study ID Numbers: 401
First Submitted: October 27, 1999
First Posted: October 28, 1999
Last Update Posted: November 26, 2013
Last Verified: May 2000

Additional relevant MeSH terms:
Hemochromatosis
Thalassemia
Iron Overload
Hematologic Diseases
beta-Thalassemia
Hemoglobinopathies
Anemia, Hemolytic, Congenital
Anemia, Hemolytic
Anemia
Genetic Diseases, Inborn
Iron Metabolism Disorders
Metabolic Diseases
Metal Metabolism, Inborn Errors
Metabolism, Inborn Errors
Deferoxamine
Siderophores
Iron Chelating Agents
Chelating Agents
Sequestering Agents
Molecular Mechanisms of Pharmacological Action