Samenvatting
Objective: Pediatric patients with acute lymphoblastic leukemia (ALL) are treated with oral 6-mercaptopurine (6MP) for nearly 2 years, but no pediatric formulation has been available. In this study, an oral 6MP liquid suitable for pediatric use was developed and tested in the target population. Method: A randomized cross-over study was performed in 20 pediatric ALL patients (age 1.9 - 14.6 years), comparing pharmacokinetics and pharmacodynamics of a newly developed 6MP liquid formulation to 6MP capsules, both taken orally for 4 weeks. Results: Based upon trough levels of the principal active metabolite, 6-thioguanine nucleotides (6-TGN), a relative bioavailability of the liquid vs. capsules of 1.01 was found (90% CI 0.86 - 1.20), demonstrating bioequivalence. This was supported by the similarly observed 6MP dosages needed for leucocyte depletion, for both formulations (35 mg/day (range 10 - 115 mg)). 75% of the parents/patients (p = 0.005) preferred the oral liquid over the capsules because of the ease of administration. Conclusion: We conclude that the novel 6MP liquid is a promising treatment for ALL.
Originele taal-2 | Engels |
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Pagina's (van-tot) | 653-662 |
Aantal pagina's | 10 |
Tijdschrift | International Journal of Clinical Pharmacology and Therapeutics |
Volume | 52 |
Nummer van het tijdschrift | 8 |
DOI's | |
Status | Gepubliceerd - aug. 2014 |
Extern gepubliceerd | Ja |