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Updated: Sep 30, 2026

Busulfan as a Myelosuppressive Agent for Generating Stable High-level Bone Marrow Chimerism in Mice
Published on: April 1, 2015
Lorazepam for seizure prophylaxis during high-dose busulfan administration
K W Chan1, C A Mullen, L L Worth
1Division of Pediatrics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
Abstract:
Seizure is a recognized complication of high-dose busulfan (BU) therapy and phenytoin (DPH) is widely used as prophylaxis. A number of adverse effects have been associated with DPH and it may also interfere with BU metabolism. We used lorazepam (median dose 0.022 mg/kg) i.v. or p.o. before each dose and for 24 h after the last dose of BU as seizure prophylaxis to 29 children undergoing hematopoietic stem cell transplantation. The regimen was well tolerated and drowsiness was the only significant side-effect. Twelve patients were able to receive the entire prophylaxis by mouth. No seizure developed during and within 48 h of BU. Concomitant pharmacokinetic studies showed no alternation of the absorption and clearance of BU during lorazepam administration. Lorazepam can be used as an alternative for seizure prophylaxis during high-dose BU treatment.
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