Recent developments in iron chelation therapy.

Abstract:

:Since 1962, desferrioxamine (deferoxamine, DFO) has been utilized for the treatment of secondary hemosiderosis. For about 30 years, DFO therapy has been performed as nightly continuous subcutaneous infusion. About 20 years ago, the first oral iron chelator (deferiprone, DFP) was presented. Concerns about potential side effects were responsible for the late acceptance and license of this drug which is limited to the use as second-line therapy for patients with thalassemia major. During recent years, chelation therapy and its evaluation started to progress rapidly. Clinical research and drug development as well as the introduction of new methods for the assessment of iron overload contributed to these advances. By using cardiac T2 (*) MRI it was possible to examine the specific effect of a chelator on myocardial siderosis. Clinical studies using this method indicated superiority of DFP compared to DFO with respect to the treatment of myocardial siderosis. Several retrospective and first prospective clinical trials seem to confirm this observation. In parallel, treatment strategies based on the combination of DFO and DFP have been developed. Using both drugs simultaneously or sequentially, additive and synergistic effects contribute to the fast elimination of iron from different organs at risk for siderotic damage. Deferasirox (DSX) is a recently developed oral chelator which shows good efficacy and tolerability in patients with transfusional hemosiderosis due to various underlying disorders. Long-term studies will define the future importance of DSX for iron chelation treatment. For the first time, there is a choice between three commercially available chelating agents for patients with transfusional iron overload. This will allow a highly effective, individually tailored treatment hopefully leading to a fundamental improvement of patients' life expectancy and quality.

journal_name

Klin Padiatr

journal_title

Klinische Padiatrie

authors

Cario H,Janka-Schaub G,Janssen G,Jarisch A,Strauss G,Kohne E

doi

10.1055/s-2007-973845

subject

Has Abstract

pub_date

2007-05-01 00:00:00

pages

158-65

issue

3

eissn

0300-8630

issn

1439-3824

journal_volume

219

pub_type

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