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Low-dose daunorubicin in induction treatment of childhood acute lymphoblastic leukemia: no long-term cardiac damage in a randomized study of the Dutch Childhood Leukemia Study Group.

Author(s): Rammeloo LA, Postma A, Sobotka-Plojhar MA, Bink-Boelkens MT, Berg A, Veerman AJ, Kamps WA

Affiliation(s): Children's Cancer Center, University Hospital, Groningen, The Netherlands.

Publication date & source: 2000-07, Med Pediatr Oncol., 35(1):13-9.

Publication type: Clinical Trial; Multicenter Study; Randomized Controlled Trial

BACKGROUND: To investigate late cardiotoxicity in childhood acute lymphoblastic leukemia (ALL) survivors after induction treatment with or without daunorubicin (DNR; 25 mg/m(2), i.v., weekly, x4, cumulative dose 100 mg/m(2)). PROCEDURE: Cardiac function was assessed in 90 event-free survivors of childhood ALL, 11.4-17.8 years (median 14.8 years) after treatment according to the DCLSG protocol ALL V. In this protocol patients were randomized to receive (group B) or not to receive (group A) DNR 25 mg/m(2)/week i.v. during the first 4 weeks of induction treatment. Age at diagnosis was 1.2-14.9 years (median 4.5 years). The cardiac evaluation consisted of a history, physical examination, electrocardiogram (ECG), 24 hr ambulatory ECG, and echocardiography. RESULTS: Electrocardiographic data, arrhythmias, left ventricular dimensions, left ventricular contractility, wall stress, and diastolic function were within normal limits in both groups. No difference could be shown between data from group A (n = 40) and group B (n = 50). CONCLUSIONS: No late cardiac damage was demonstrated in childhood ALL survivors after induction treatment including a cumulative dose of 100 mg/m(2) DNR, compared to survivors who received the same treatment but without DNR. DNR 100 mg/m(2) given in 4 doses of 25 mg/m(2)/week appears to be a safe dose in induction treatment of ALL. Copyright 2000 Wiley-Liss, Inc.

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