title: Lack of association between COPD and transforming growth factor-beta1 (TGFB1) genetic polymorphisms in Koreans.
abstract: OBJECTIVE
  Many genetic variations have been suggested as genetic risk factors for the development of chronic obstructive pulmonary disease (COPD), including single nucleotide polymorphisms in the transforming growth factor-beta1 (TGFB1) gene. We attempted to elucidate the association between TGFB1 genetic polymorphisms and COPD among Koreans.
  
  
  METHODS
  The genotypes of 102 male patients with COPD and 159 volunteers with similar distributions of age, sex and smoking intensity, as well as normal pulmonary function, were determined for three previously associated TGFB1 single nucleotide polymorphisms (SNPs), -10807G/A (rs2241712) and -509T/C (rs1800469), located in or near the promoter, and 29T/C (rs1982073), located in exon 1 of the TGFB1 gene.
  
  
  RESULTS
  No significant associations between COPD and the three TGFB1 SNPs could be identified. In addition, the haplotypes composed of three TGFB1 SNPs were not associated with the presence of COPD.
  
  
  CONCLUSIONS
  These results differ from previous reports involving Caucasians, and might reflect racial differences in the pathogenesis of COPD.
authors.affiliation: Department of Internal Medicine and Respiratory Center, Seoul National University Bundang Hospital, Gyeonggi-Do, Republic of Korea.
authors.forename: H I
authors.initials: HI
authors.lastname: Yoon
authors.forename: E K
authors.initials: EK
authors.lastname: Silverman
authors.forename: H W
authors.initials: HW
authors.lastname: Lee
authors.forename: C G
authors.initials: CG
authors.lastname: Yoo
authors.forename: C T
authors.initials: CT
authors.lastname: Lee
authors.forename: H S
authors.initials: HS
authors.lastname: Chung
authors.forename: Y W
authors.initials: YW
authors.lastname: Kim
authors.forename: S K
authors.initials: SK
authors.lastname: Han
authors.forename: Y S
authors.initials: YS
authors.lastname: Shim
authors.forename: J J
authors.initials: JJ
authors.lastname: Yim
mesh_terms: D016009:Chi-Square Distribution; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D007723:Korea; D016015:Logistic Models; D008297:Male; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D029424:Pulmonary Disease, Chronic Obstructive / Q000235:genetics*; D016212:Transforming Growth Factor beta / Q000235:genetics*; D053773:Transforming Growth Factor beta1
chemical_list: C508960:TGFB1 protein, human; D016212:Transforming Growth Factor beta; D053773:Transforming Growth Factor beta1