title: Polymorphism of CYPIA1 and GSTM1 genes associated with susceptibility of gastric cancer in Shandong Province of China.
abstract: OBJECTIVE
  To explore whether polymorphisms of the CYPIA1 and GSTM1 genes are associated with susceptibility of stomach cancer.
  
  
  METHODS
  A total of 102 stomach cancer cases and 62 healthy persons were diagnosed by pathology in 1998-2000 in the Qilu Hospital of Shandong University. Gene polymorphisms were detected by the PCR using sequence-specific primers. Data analysis of the case-control study was carried out using the unconditional logistic method.
  
  
  RESULTS
  After adjustment for age, sex, educational levels, and occupation, the risk factors for stomach cancer were shown to be smoking, Helicobacter pylori (H pylori), and presence of the CYPIM G/G and GSTM1 O/O genotypes. Interaction was observed between the combined genotypes of either CYPIA1 G/G and GSTM1 O/O or H pylori infection, or GSTM1 O/O and H pylori infection or smoking.
  
  
  CONCLUSIONS
  Polymorphisms of the CYPIA1 and GSTM1 genes, H pylori infection and smoking are related to susceptibility to stomach cancer.
authors.affiliation: Center of Tumour Treatment, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China. haoli611@yahoo.com
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.forename: Xue-Liang
authors.initials: XL
authors.lastname: Chen
authors.forename: Hui-Qing
authors.initials: HQ
authors.lastname: Li
mesh_terms: D000328:Adult; D002681:China; D019363:Cytochrome P-450 CYP1A1 / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D005982:Glutathione Transferase / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D012189:Retrospective Studies; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000235:genetics*
chemical_list: D019363:Cytochrome P-450 CYP1A1; D005982:Glutathione Transferase