title: Relationship between CYP1A1 polymorphisms and invasion and metastasis of breast cancer.
abstract: OBJECTIVE
  To investigate the relationship between CYP1A1 genetic polymorphisms and the invasion and metastasis of breast cancer.
  
  
  METHODS
  The CYP1A1 gene polymorphism (an T-C transversion at nucleotide position 3801) was detected by the polymerase chain reaction and restriction fragment length polymorphism in 80 cases with breast cancer and 60 samples of normal breast tissue. The difference in genotypic distribution frequency between the groups, the correlation between the genotypes and the factors related to prognosis were analyzed.
  
  
  RESULTS
  The incidence of homozygous and variant genotypes had no difference between the breast cancer group and controls group (P=0.746). The proportion of variant genotype increased as clinical stage (P=0.006) advanced, as well as with increased numbers of lymph node metastases (P=0.010).
  
  
  CONCLUSIONS
  In patients with breast cancer there is a correlation between the CYP1A1 CC allele and some factors indicating poor prognosis, including more lymph node metastases as well as a more advanced clinical stage.
authors.affiliation: Laboratory of Department of Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, Guangdong, People's Republic of China.
authors.forename: Hua
authors.initials: H
authors.lastname: Wang
authors.forename: Wen-Jian
authors.initials: WJ
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000235:genetics* / Q000473:pathology*; D019363:Cytochrome P-450 CYP1A1 / Q000235:genetics*; D005260:Female; D005838:Genotype; D006801:Humans; D008207:Lymphatic Metastasis; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009362:Neoplasm Metastasis; D017354:Point Mutation; D020641:Polymorphism, Single Nucleotide
chemical_list: D019363:Cytochrome P-450 CYP1A1
keywords: Breast cancer; CYP1A1; CytochromeP450; Gene polymorphism; Invasion; Metastasis