Introduction: Impaired motor performance in children who completed treatment for acute lymphoblastic leukemia (ALL) may be related to polymorphisms of the metabolising gene CYP3A5 or vincristine toxicity related genes MDR-1 and MAPT. Methods: Motor performance was measured with the Movement Assessment Battery for Children (movement-ABC). DNA, from mononuclear blood cells was genotyped for CYP3A5, MDR-1 and MAPT polymorphisms. Results: Motor performance was not significantly affected by CYP3A5 *3/*3 and CYP3A5*1*3 genotypes, MDR-1 polymorphisms or MAPT haplotype. Conclusion: Our data did not show that CYP3A5, MDR-1 or MAPT polymorphisms are linked to impaired motor performance in children after treatment for ALL.

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Keywords Impaired motor performance, Leukemia, Polymorphisms
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Hartman, A., van Schaik, R.H.N., van der Heiden, I.P., Broekhuis, M.J.C., Meier, M., den Boer, M.L., & Pieters, R.. (2010). Polymorphisms in genes involved in vincristine pharmacokinetics or pharmacodynamics are not related to impaired motor performance in children with leukemia. Leukemia Research: clinical and laboratory studies, 34(2), 154–159. doi:10.1016/j.leukres.2009.04.027