title: [The research the relationship between N-acetyltransferase 1 gene polymorphisms and genetic susceptibility to sporadic colorectal adenocarcinoma].
abstract: OBJECTIVE
  In this study, we analyzed the association genetic polymorphisms of N-acetyltransferase 1 (NAT1) with genetic susceptibility to sporadic colorectal adenocarcinoma (SCRAC).
  
  
  METHODS
  All subjects are unrelated Han people in Hubei province of China. Using multiple PCR and PCR-RFLP, we studied the genotypes and genetic polymorphisms of the NAT1 gene of 101 healthy controls and 104 SCRAC patients.
  
  
  RESULTS
  (1) The frequency of NAT1 * 10 was significantly higher among the SCRAC when compared with the controls (P < 0.05, OR = 1.91, 95% CI = 1.1 - 3.4), and among the elder SCRAC when compared to the controls (P < 0.01, OR = 2.91, 95% CI = 1.48 - 5.90), (2) The frequency of NAT1 * 10 relative to SCRAC tumor location as follow: proximal SCRAC (44.4%), distal SCRAC (41.6%), all the difference were not statistically significant relative to the controls; The frequency of NAT1 * 10 genotype was significantly higher in stage II cases (P < 0.05, OR = 2.48, 95% CI = 1.18 - 5.20) and stage III and IV cases (P < 0.05, OR = 3.04, 95% CI = 1.28 - 7.20) when compared with the controls.
  
  
  CONCLUSIONS
  NAT1 * 10 has increased risk of SCRAC and significantly related to the later stage tumors, is not significantly related to the tumor location, whether the elder individuals with NAT1 * 10 have increased risk of SCRAC needs further study.
authors.affiliation: Department of Gasteroenterology, Zhongnan Hospital, Wuhan University, Wuhan Hospital, Wuhan, China.
authors.forename: Youcai
authors.initials: Y
authors.lastname: Zhang
authors.forename: Zhaohong
authors.initials: Z
authors.lastname: Shi
authors.forename: Changsheng
authors.initials: C
authors.lastname: Deng
authors.forename: Youqing
authors.initials: Y
authors.lastname: Zhu
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhou
mesh_terms: D000107:Acetylation; D000230:Adenocarcinoma / Q000235:genetics*; D000328:Adult; D000368:Aged; D001191:Arylamine N-Acetyltransferase / Q000235:genetics*; D015179:Colorectal Neoplasms / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D007527:Isoenzymes / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic
chemical_list: D007527:Isoenzymes; D001191:Arylamine N-Acetyltransferase; C089384:N-acetyltransferase 1