title: Cyclin D1 gene polymorphism and susceptibility to lung cancer in a Chinese population.
abstract: The objective was to study the relationship between cyclin D1 gene (CCND1) polymorphism and lung cancer in the Chinese population. Blood samples of 182 cases and 185 controls were collected from a hospital based case-control study. PCR-SSCP was used to examine the G/A polymorphism in exon 4 of CCND1. The results showed that the frequencies of the CCND1 AA, GA and GG genotypes were 31.3, 46.7 and 22.0% respectively in cases, and 21.1, 53.0 and 25.9 respectively in controls. Adjusted by age (in years), sex and smoking status, multivariate logistic regression analysis showed that the AA genotype was associated with a significantly increased risk (OR = 1.87, 95% CI 1.01-3.45) for lung cancer. In the stratification analysis, the CCND1 AA variant genotype was associated with increased risk in individuals who were </=50 years old (OR = 3.23, 95% CI 1.17-8.96) and males (OR = 2.46, 95% CI 1.18-5.10). According to histological types, there was significantly higher frequency of AA genotype in squamous cell lung cancer than that in controls (OR = 2.92, 95% CI 1.07-8.03). In conclusion, it is suggested that the CCND1 G/A polymorphism is associated with the early onset of lung cancer in men and contributes to susceptibility to lung cancer, especially squamous cell cancer, in this population.
authors.affiliation: Institute of Occupational Health and Poison Control, Chinese Center for Disease Control, Beijing 100050, P. R. China.
authors.forename: Shi
authors.initials: S
authors.lastname: Qiuling
authors.forename: Zheng
authors.initials: Z
authors.lastname: Yuxin
authors.forename: Zheng
authors.initials: Z
authors.lastname: Suhua
authors.forename: Xiao
authors.initials: X
authors.lastname: Cheng
authors.forename: Leng
authors.initials: L
authors.lastname: Shuguang
authors.forename: He
authors.initials: H
authors.lastname: Fengsheng
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000235:genetics; D016022:Case-Control Studies; D002681:China; D005260:Female; D019940:Genes, bcl-1; D020022:Genetic Predisposition to Disease; D006801:Humans; D008175:Lung Neoplasms / Q000208:ethnology / Q000235:genetics; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D018807:Polymorphism, Single-Stranded Conformational; D012307:Risk Factors; D012737:Sex Factors; D012907:Smoking / Q000009:adverse effects