title: Association of genetic polymorphisms of EGFR with glioma in a Chinese population.
abstract: OBJECTIVE
  Several studies indicated that genetic polymorphisms in the epidermal growth factor receptor (EGFR) gene were associated with glioma risk. However, the relationship between EGFR genetic polymorphisms and glioma remains unclear in the Chinese population.
  
  
  METHODS
  We designed a case-control study by selecting 300 histologically confirmed adult glioma patients and 300 cancer-free controls to analyze the distribution of EGFR genotype. Two single-nucleotide polymorphisms, rs730437 and rs1468727, were genotyped by using the polymerase chain reaction-restriction fragment length polymorphism method.
  
  
  RESULTS
  We found that the CC genotype of rs1468727 was more common in the glioma group than in the control group (p=0.021). We also found that the C allele frequency was higher in the glioma group than that in the control group (p=0.005; odds ratio [OR]=1.38, 95% confidence interval [CI]: 1.101-1.740). For rs730437, we found both the AA genotype (p=0.011) and A allele frequency (p=0.003; OR=0.703; 95% CI: 0.558-0.886) were significantly lower in the glioma patients than in the control subjects, respectively. Haplotype analysis showed that the A T haplotype frequency was higher in the control group than in the glioma group (p=0.005; OR=0.722; 95% CI: 0.575-0.908). However, the CC haplotype frequency was higher in the glioma group than in the control group (p=0.003; OR=1.423; 95% CI: 1.129-1.793).
  
  
  CONCLUSIONS
  Our study indicates that polymorphisms in the EGFR gene are associated with glioma susceptibility in the Chinese population.
authors.affiliation: 1 Department of Neurosurgery, Qilu Hospital of Shandong University , Jinan, China .
authors.forename: Xinyu
authors.initials: X
authors.lastname: Wang
authors.forename: Huawei
authors.initials: H
authors.lastname: Zhang
authors.forename: Donghai
authors.initials: D
authors.lastname: Wang
authors.forename: Xingang
authors.initials: X
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D044466:Asian People; D016022:Case-Control Studies; D002681:China; D066246:ErbB Receptors / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005910:Glioma / Q000235:genetics*; D006239:Haplotypes; D006801:Humans; D008297:Male; D008875:Middle Aged; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide
chemical_list: C512478:EGFR protein, human; D066246:ErbB Receptors