title: Polymorphisms of XRCC1 and ADPRT genes and risk of noncardia gastric cancer in a Chinese population: a case-control study.
abstract: OBJECTIVE
  Gastric cancer (GC) is one of the most common malignancies and its mortality ranks third among all cancers in China. We previously noted that XRCC1 Arg194Trp was associated with GC risk in Western China in a study on XRCC1 Arg194Trp and ADPRT Val762Ala. We aimed to further explore the association of these polymorphisms with risk of the noncardia subtype.
  
  
  METHODS
  We enrolled 176 noncardia GC patients and 308 controls from four hospitals and a community between October 2010 and August 2011. Genotyping was performed in a 384-well plate format on the Sequenom MassARRAY platform. A self-designed questionnaire was utilized to collect epidemiological data from the subjects regarding demographic factors and potential risk factors.
  
  
  RESULTS
  Subjects were aged 56.8±11.8 (mean±standard deviation) and 57.6±11.1 years in the case and control groups, respectively. Individuals carrying the XRCC1 Trp/Trp or Arg/Trp variant genotype were at significantly increased risk of noncardia GC (adjusted OR, 1.48; 95% CI, 1.00-2.17), after adjustment for family history of cancer, drinking, and smoking. The increased risk of XRCC1 Arg194Trp variant genotype was more pronounced among subjects below 60 years old (adjusted OR, 1.78; 95% CI, 1.07-2.96), compared to older individuals. ADPRT Val762Ala variants (Ala/Ala or Val/Ala) were not associated with noncardia GC (adjusted OR, 1.03; 95% CI, 0.69-1.54).
  
  
  CONCLUSIONS
  Our study suggests that XRCC1 Arg194Trp is a genetic susceptibility factor for developing noncardia GC in Han Chinese in Western China. In particular, individuals with the XRCC1 Arg194Trp variant genotype are at increased risk for GC below 60 years old.
authors: Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, China.
authors: Xiong-Fei
authors: XF
authors: Pan
authors: Yao
authors: Y
authors: Xie
authors: Marie
authors: M
authors: Loh
authors: Shu-Juan
authors: SJ
authors: Yang
authors: Yuan-Yuan
authors: YY
authors: Wen
authors: Zhi
authors: Z
authors: Tian
authors: He
authors: H
authors: Huang
authors: Hui
authors: H
authors: Lan
authors: Feng
authors: F
authors: Chen
authors: Richie
authors: R
authors: Soong
authors: Chun-Xia
authors: CX
authors: Yang
mesh_terms: D000230:Adenocarcinoma / Q000209:etiology* / Q000473:pathology; D044466:Asian People / Q000235:genetics*; D016022:Case-Control Studies; D004268:DNA-Binding Proteins / Q000235:genetics*; D005260:Female; D005500:Follow-Up Studies; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D000071137:Poly (ADP-Ribose) Polymerase-1; D011065:Poly(ADP-ribose) Polymerases / Q000235:genetics*; D011110:Polymorphism, Genetic / Q000235:genetics*; D011379:Prognosis; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000209:etiology* / Q000473:pathology; D000076105:X-ray Repair Cross Complementing Protein 1
chemical_list: D004268:DNA-Binding Proteins; D000076105:X-ray Repair Cross Complementing Protein 1; C000619371:XRCC1 protein, human; C499320:PARP1 protein, human; D000071137:Poly (ADP-Ribose) Polymerase-1; D011065:Poly(ADP-ribose) Polymerases