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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00000595
Other study ID # 401
Secondary ID
Status Completed
Phase Phase 2
First received October 27, 1999
Last updated November 25, 2013
Start date January 1978
Est. completion date September 1994

Study information

Verified date May 2000
Source National Heart, Lung, and Blood Institute (NHLBI)
Contact n/a
Is FDA regulated No
Health authority United States: Federal Government
Study type Interventional

Clinical Trial Summary

To determine whether deferoxamine prevented the complications of transfusional iron overload.


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.


Recruitment information / eligibility

Status Completed
Enrollment 0
Est. completion date September 1994
Est. primary completion date
Accepts healthy volunteers No
Gender Both
Age group 5 Years and older
Eligibility Males and females, 5 years or older, with transfusional hemochromatosis.

Study Design

Primary Purpose: Treatment


Intervention

Drug:
deferoxamine


Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
National Heart, Lung, and Blood Institute (NHLBI)

References & Publications (2)

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. — View Citation

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. — View Citation

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