The EPHX1 rs1051740 Polymorphism Is Associated with Childhood Acute Lymphoblastic Leukemia in a Korean Population

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Author(s):Hee Nam Kim, Nan Young Kim, Li Yu, Il-Kwon Lee, Min-Ho Shin, Hee Jo Baek, Hoon Kook, Hyeoung-Joon Kim

Microsomal epoxide hydrolase (EPHX1) is involved in the activation and detoxification of exogenous chemicals. Genetic polymorphisms in EPHX1 have been associated with the development of leukemia. To investigate an association between single-nucleotide polymorphisms (SNPs) of EPHX1 and risk factors for childhood acute lymphoblastic leukemia (ALL) in Korean children, we genotyped two SNPs, Tyr113His (rs1051740) and His139Arg (rs2234922) in 185 childhood ALL cases and 536 healthy controls. Genotyping for these two SNPs was performed by simplex pyrosequencing assay and high-resolution melt analysis, respectively. We found that the Tyr113His genotype was associated with a decreased risk of childhood ALL (odds ratio, OR = 0.64, 95% confidence interval, CI = 0.43 – 0.93; p = 0.02). There was no association between His139Arg and the combined genotypes and the risk of childhood ALL. These results suggest that the EPHX1 113TyrHis genotype may protect against leukemogenesis in childhood.

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Journal: Advances in Bioscience and Biotechnology
DOI: 10.4236/abb.2014.57080 (PDF)
Paper Id: 47444 (metadata)

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