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  • Title: Managing iron overload in patients with myelodysplastic syndromes with oral deferasirox therapy.
    Author: Jabbour E, Garcia-Manero G, Taher A, Kantarjian HM.
    Journal: Oncologist; 2009 May; 14(5):489-96. PubMed ID: 19365094.
    Abstract:
    Patients with myelodysplastic syndromes (MDS) often require chronic RBC transfusions, which can lead to iron overload. Without adequate management, this may cause progressive damage to hepatic, endocrine, and cardiac organs, significantly affecting overall survival. Recent retrospective analyses have suggested that iron chelation provides a survival advantage in iron-overloaded patients with MDS who are given chelation therapy compared with those who are not. Nonetheless, it is evident that iron overload in many patients with MDS is not adequately managed. Clinical evaluation of the once-daily, oral iron chelator deferasirox in MDS populations has indicated that it provides dose-dependent reductions in body iron burden and is generally well tolerated, with a manageable safety profile in adult and pediatric patients. The most common treatment-related adverse events (AEs) included transient, mild-to-moderate gastrointestinal disturbances and skin rash, which rarely required drug discontinuation and resolved spontaneously in most cases. Adequate management of AEs and practical approaches such as patient education and counseling are necessary to ensure that patients remain compliant with therapy. Regular monitoring of serum ferritin levels is key to identifying patients who require iron chelation therapy, and to ensure maintenance of iron levels below the critical level of 1,000 microg/l. The flexible dosing regimen of deferasirox allows dose adjustments to be made in response to trends in serum ferritin, to changes in a patient's transfusional iron intake, and to the objectives of treatment, allowing the full benefit of transfusion therapy without the risks associated with iron overload.
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