Single nucleotide polymorphism in DNA methyltransferase 3B promoter and its association with gastric cardiac adenocarcinoma in North China.
World J Gastroenterol
; 11(23): 3623-7, 2005 Jun 21.
Article
em En
| MEDLINE
| ID: mdl-15962389
ABSTRACT
AIM:
To investigate the association between single nucleotide polymorphism (SNP) in promoter of the DNA methyltransferase 3B (DNMT3B) gene and risk for development and lymphatic metastasis of gastric cardiac adenocarcinoma (GCA).METHODS:
The hospital based case-control study included 212 GCA patients and 294 control subjects without overt cancer. The DNMT3B SNP was genotyped by PCR and restriction fragment length polymorphism (RFLP) analysis.RESULTS:
The C/C genotype was not detected in both GCA patients and controls. In control subjects, the frequency of T/T and C/T genotypes was 94.9% and 5.1% respectively, and that of T and C alleles was 97.4% and 2.6%, respectively. The genotype and allelotype distribution in the GCA patients was not significantly different from that in controls (P=0.34 and 0.33, respectively). When stratified by smoking status and family history of upper gastrointestinal cancer, significant difference in the genotype distribution was not observed between GCA patients and controls. The distribution of DNMT3B genotypes in GCA patients with or without lymphatic metastasis did not show significant difference (P=0.42).CONCLUSION:
The distribution of DNMT3B SNP in North China is distinct from that in Caucasians. Although this SNP has been associated with susceptibility to lung, head, neck and breast cancer, it may not be used as a stratification marker to predict susceptibility and lymphatic metastasis of GCA, at least in the population of North China.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Gástricas
/
Adenocarcinoma
/
Polimorfismo de Nucleotídeo Único
/
DNA (Citosina-5-)-Metiltransferases
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Humans
País/Região como assunto:
Asia
Idioma:
En
Revista:
World J Gastroenterol
Assunto da revista:
GASTROENTEROLOGIA
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
China