The DNMT3B -579 G>T promoter polymorphism and risk of lung cancer

Liu,Hui; Jiao,Yifei; Guan,Yana; Lao,Yingbin; Zhao,Chengcheng; Fan,Hong

doi:10.3892/etm.2011.420

The DNMT3B -579 G>T promoter polymorphism and risk of lung cancer

Authors:
- Hui Liu
- Yifei Jiao
- Yana Guan
- Yingbin Lao
- Chengcheng Zhao
- Hong Fan
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Affiliations: Department of Genetic and Developmental Biology, Medical School of Southeast University, Nanjing 210009, P.R. China, Department of Genetic and Developmental Biology, Medical School of Southeast University, Nanjing 210009, P.R. China
Published online on: December 19, 2011 https://doi.org/10.3892/etm.2011.420
Pages: 525-529

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Abstract

The present study aimed to investigate the association of the -579 G>T polymorphism in the DNMT3B promoter with susceptibility to lung cancer. A total of 174 lung cancer patients and 135 healthy controls from the northern part of China were enrolled, and were matched for gender and age. All subjects were genotyped by polymerase chain reaction-restriction-fragment length polymorphism analysis and confirmed by DNA sequencing. Stratification analyses were used to study the subgroups of subjects by age and gender, and evaluate the association between the -579 G>T polymorphism and the genetic susceptibility to lung cancer. The results revealed that individuals with the DNMT3B -579 GT genotype had a significantly decreased risk of lung cancer [odds ratio (OR), 0.517; 95% confidence interval (CI), 0.273-0.981] compared with those with a -579 TT genotype in the studied population. However, the deviation was significant (OR, 0.138, 95% CI, 0.034-0.549) between the risk of lung cancer and the GT and GG genotype, when the smoking factor was considered. The data from this study indicate that the DNMT3B genetic polymorphism varies among various races, ethnic groups and geographical areas. The DNMT3B -579 G>T polymorphism may contribute to the genetic susceptibility to lung cancer.

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