PMID- 18662374 OWN - NLM STAT- MEDLINE DCOM- 20081031 LR - 20231213 IS - 1756-9966 (Electronic) IS - 0392-9078 (Print) IS - 0392-9078 (Linking) VI - 27 IP - 1 DP - 2008 Jul 28 TI - Promoter polymorphisms of DNMT3B and the risk of colorectal cancer in Chinese: a case-control study. PG - 24 LID - 10.1186/1756-9966-27-24 [doi] AB - BACKGROUND: DNA-methyltransferase-3B (DNMT3B), which plays a role in DNA methylation, is usually aberrant expression involved in carcinogenesis. Polymorphisms of the DNMT3B gene may influence DNMT3B activity on DNA methylation in several cancers, thereby modulating the susceptibility to cancer. METHODS: DNMT3B -579G>T genotypes and -149C>T were determined by PCR-RFLP and sequencing in 137 colorectal cancer patients and 308 controls matched for age and sex, who did not receive radiotherapy or chemotherapy for newly diagnosed and histopathologically confirmed colorectal cancer. The association between two SNPs of the DNMT3B promoter and the risk of the development of colorectal cancer was analyzed in a population of Chinese. RESULTS: The allele frequency of -149C >T among patients and controls was 0.73% versus 0.65%, respectively. The allele frequency of -597G>T for patients and controls was 6.57% versus 11.53%, respectively. Individuals with at least one -149C>T allele were no at a significantly increase risk of colorectal cancer compared with those having a -149TT genotype. However, Individuals with at least one 579G>T allele were decreased risk of colorectal cancer compared with those having a -579TT genotype. CONCLUSION: The relative distribution of -149C>T DNMT3B SNPs among a Chinese population can not be used as a stratification marker to predict an individual's susceptibility to colorectal cancer. However, the DNMT3B -579G>T polymorphism may contribute to the genetic susceptibility to colorectal cancer. FAU - Fan, Hong AU - Fan H AD - Key Laboratory of Developmental genes and Human diseases, Ministry of Education, Southeast University, 210009, Nanjing, PR China. fanh@seu.edu.cn. FAU - Zhang, Feng AU - Zhang F FAU - Hu, Jiabo AU - Hu J FAU - Liu, Dongsheng AU - Liu D FAU - Zhao, Zhujiang AU - Zhao Z LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080728 PL - England TA - J Exp Clin Cancer Res JT - Journal of experimental & clinical cancer research : CR JID - 8308647 RN - EC 2.1.1.37 (DNA (Cytosine-5-)-Methyltransferases) SB - IM MH - Aged MH - Asian People/genetics MH - Base Sequence MH - Case-Control Studies MH - Colorectal Neoplasms/*genetics/metabolism MH - DNA (Cytosine-5-)-Methyltransferases/*genetics MH - DNA Methylation MH - Female MH - *Genetic Predisposition to Disease MH - Genotype MH - Humans MH - Male MH - Molecular Sequence Data MH - *Polymorphism, Single Nucleotide MH - *Promoter Regions, Genetic MH - Risk Factors MH - DNA Methyltransferase 3B PMC - PMC2515831 EDAT- 2008/07/30 09:00 MHDA- 2008/11/01 09:00 PMCR- 2008/07/28 CRDT- 2008/07/30 09:00 PHST- 2008/06/03 00:00 [received] PHST- 2008/07/28 00:00 [accepted] PHST- 2008/07/30 09:00 [pubmed] PHST- 2008/11/01 09:00 [medline] PHST- 2008/07/30 09:00 [entrez] PHST- 2008/07/28 00:00 [pmc-release] AID - 1756-9966-27-24 [pii] AID - 10.1186/1756-9966-27-24 [doi] PST - epublish SO - J Exp Clin Cancer Res. 2008 Jul 28;27(1):24. doi: 10.1186/1756-9966-27-24.