Abstract
Cytarabine arabinoside (Ara-C) is the most important agent for treating acute myeloid leukemia (AML). Here, we genotyped 11 single nucleotide polymorphisms (SNPs) of seven Ara-C metabolism-related genes in 39 AML patients who had received high-dose Ara-C as a single-agent treatment. Univariate analysis identified three SNPs that were significantly associated with shorter time-to-relapse (TTR): CTPS rs12144160 GG compared to AA/AG, DCTD rs9990999 AG/GG compared to AA, and SLC29A1 rs693955 CC compared to AA/AC. Multivariate analysis of TTR revealed the SLC29A1 rs693955 CC genotype and first induction failure to be significantly associated with a shorter TTR. The DCTD rs9990999 AG/GG and SLC29A1 rs693955 CC genotypes were also significantly associated with shorter duration of neutropenia. The results of our study suggest that SNP analysis can be an important tool in improving drug responsiveness and enabling a better understanding of this condition and the development of tailor-made treatments for AML patients who benefit from consolidated high-dose Ara-C therapy.
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Acknowledgments
We thank the all physicians and nurses at the Hematology and Oncology Department of Tokai University Hospital and laboratory staff in the Department of Hematology and Oncology at Tokai University for their kind support; particularly T. I., E. M., and N. S. for assitance with the genotyping. We also appreciate valuable advice regarding this study from the Morishima research group on Allergic Disease and Immunology from the Ministry of Health, Labor, and Welfare of Japan.
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The authors declare that they have no conflict of interest.
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Amaki, J., Onizuka, M., Ohmachi, K. et al. Single nucleotide polymorphisms of cytarabine metabolic genes influence clinical outcome in acute myeloid leukemia patients receiving high-dose cytarabine therapy. Int J Hematol 101, 543–553 (2015). https://doi.org/10.1007/s12185-015-1766-4
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DOI: https://doi.org/10.1007/s12185-015-1766-4