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Decreased survival in normal karyotype AML with single-nucleotide polymorphisms in genes encoding the AraC metabolizing enzymes cytidine deaminase and 5 '-nucleotidase
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2013 (Engelska)Ingår i: American Journal of Hematology, ISSN 0361-8609, E-ISSN 1096-8652, Vol. 88, nr 12, s. 1001-1006Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

De novo acute myeloid leukemia with normal karyotype (NK-AML) comprises a large group of patients with no common cytogenetic alterations and with a large variation in treatment response. Single-nucleotide polymorphisms (SNPs) in genes related to the metabolism of the nucleoside analogue AraC, the backbone in AML treatment, might affect drug sensitivity and treatment outcome. Therefore, SNPs may serve as prognostic biomarkers aiding clinicians in individualized treatment decisions, with the aim of improving patient outcomes. We analyzed polymorphisms in genes encoding cytidine deaminase (CDA 79A> C rs2072671 and 2451C> T rs532545), 50-nucleotidase (cN-II 7A> G rs10883841), and deoxycytidine kinase (DCK 30UTR 948T> C rs4643786) in 205 de novo NK-AML patients. In FLT3-internal tandem duplication (ITD)-positive patients, the CDA 79C/C and 2451T/T genotypes were associated with shorter overall survival compared to other genotypes (5 vs. 24 months, P< 0.001 and 5 vs. 23 months, P50.015, respectively), and this was most pronounced in FLT3-ITD-positive/NPM1-positive patients. We observed altered in vitro sensitivity to topoisomerase inhibitory drugs, but not to nucleoside analogues, and a decrease in global DNA methylation in cells carrying both CDA variant alleles. A shorter survival was also observed for the cN-II variant allele, but only in FLT3-ITD-negative patients (25 vs. 31 months, P50.075). Our results indicate that polymorphisms in genes related to nucleoside analog drug metabolism may serve as prognostic markers in de novo NK-AML. Am. J. Hematol. 88: 1001-1006, 2013.

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2013. Vol. 88, nr 12, s. 1001-1006
Nationell ämneskategori
Medicin och hälsovetenskap
Identifikatorer
URN: urn:nbn:se:uu:diva-214024DOI: 10.1002/ajh.23549ISI: 000327224000125OAI: oai:DiVA.org:uu-214024DiVA, id: diva2:684214
Tillgänglig från: 2014-01-07 Skapad: 2014-01-07 Senast uppdaterad: 2017-12-06Bibliografiskt granskad

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Hermanson, MonicaRosenquist, Richard BrandellHöglund, Martin

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