Abstract
AbstractAbstract 4328 BackgroundThe cytosine arabinoside (Ara-C)-based chemotherapy is the major remedial measure for acute myeloid leukemia (AML). Deoxycytidine kinase (DCK) and cytidine deaminase (CDA) are the key enzymes in the metabolism of Ara-C. Many single nucleotide polymorphisms (SNPs) and haplotypes of DCK and CDA, which contribute to susceptibility to Ara-C, have been identified in Africans and Europeans. However, there has been no report about the relation among three SNPs in DCK (rs115543896, rs72552079, and rs111454937) and two SNPs in CDA (rs2072671 and rs60369023), and their clinical response to Ara-C for a Chinese population. In this study, we aimed to investigate whether these five SNPs are associated with the therapeutic outcomes of Ara-C-based chemotherapy regimens in patients with AML. MethodsA total of 151 patients with AML in a Chinese population were enrolled in our study. SNPs genotyping were performed using the MassARRAY system (Sequenom) by means of the matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) method. ResultsThe results illustrated that DCKrs111454937 AA genotype was more frequent in patients with higher platelet count, and A allele frequency was significantly higher in the group £40 years, lower white blood count (WBC) patients group and the group with platelet counts >60′109/L. Meanwhile, both DCKrs72552079 TC (OR=1.225, 95% CI=1.225–9.851, P=0.0192) and CDArs60369023 GA (OR=9.851, 95% CI=1.31–77.93, P=0.0263) significantly improved Ara-C-based chemotherapy response. While DCKrs11554389 AA (OR=0.147, 95% CI=0.027–0.801, P=0.0267) was associated with the decrease of Ara-C-based chemotherapy response. ConclusionIt is evident that the DCK and CDA polymorphisms might be the important markers for the AML patients' therapy outcomes in a Chinese population. Disclosures:No relevant conflicts of interest to declare.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.