title: XRCC1 and XRCC3 DNA repair gene polymorphisms in breast cancer women from the Lodz region of Poland.
abstract: OBJECTIVE
  Genetic polymorphism in XRCC1 and XRCC3 genes may influence DNA repair capacity and, in turn, confer predisposition to breast cancer.
  
  
  METHODS
  In the present work the distribution of genotypes and frequency of alleles of the Arg194Trp and Arg399Gln polymorphism of XRCC1 and Trp241 Met polymorphism in XRCC3 in breast cancer women were analysed. Blood samples were obtained from 150 women with breast cancer and controls (n = 106). The polymorphisms were determined by PCR-RFLP methods.
  
  
  RESULTS
  No association between XRCC1 Arg399Gln and Arg194Trp genotype and breast cancer risk was observed. The distribution of the genotypes of the Trp241 Met polymorphism of XRCC3 in both controls and patients did not differ significantly (p > 0.05) from those predicted by the Hardy-Weinberg distribution. There were no significant differences (p > 0.05) in genotype distributions and allele frequencies between subgroups assigned to histological stage.
  
  
  CONCLUSIONS
  The results suggest that the Arg194Trp and Arg399Gln polymorphism of the XRCC1 gene as well as Trp241 Met polymorphism in XRCC3 may not be linked with appearance and development of breast cancer.
authors.affiliation: Department of Menopausal Diseases, Institute of Polish Mother's Memorial Hospital, Łódź.
authors.forename: Anna
authors.initials: A
authors.lastname: Sobczuk
authors.forename: Hanna
authors.initials: H
authors.lastname: Romanowicz-Makowska
authors.forename: Tomasz
authors.initials: T
authors.lastname: Fiks
authors.forename: Jakub
authors.initials: J
authors.lastname: Baszczyński
authors.forename: Beata
authors.initials: B
authors.lastname: Smolarz
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000097:blood / Q000235:genetics* / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000097:blood / Q000235:genetics* / Q000473:pathology; D004260:DNA Repair; D004268:DNA-Binding Proteins / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008875:Middle Aged; D011044:Poland; D012150:Polymorphism, Restriction Fragment Length; D017698:Postmenopause; D000076105:X-ray Repair Cross Complementing Protein 1
chemical_list: D004268:DNA-Binding Proteins; D000076105:X-ray Repair Cross Complementing Protein 1; C110901:X-ray repair cross complementing protein 3; C000619371:XRCC1 protein, human