title: Role of TGF-beta1 (-509C>T) promoter polymorphism in susceptibility to cervical cancer.
abstract: Transforming growth factor-beta (TGF-beta) family members are multifunctional cytokines that play a key role in cellular growth, proliferation, and differentiation. The aim of study was to evaluate the association of TGF-beta1 -509 C>T gene polymorphism with risk of cervical cancer. The study was carried out in 150 histopathology confirmed patients with cervical cancer and 162 cervical-cytology negative females. Polymorphisms for TGF-beta1 -509C>T gene was genotyped by polymerase chain reaction and restriction enzyme digestion. Frequencies of individuals with -509TT genotype and T allele of TGF-beta1 gene polymorphisms did not differ significantly in patients with cervical cancer and controls (p = 0.328, OR = 1.37 and p = 0.605, OR = 1.09). Cervical cancer patients with -509TT had marginal low risk for stage I (p = 0.04, OR = 0.95, 95% CI = 0.91-0.99) but -509TT genotype of TGF-beta1 was associated with increased risk of stage II of cancer (p = 0.07, OR = 3.13, 95% CI = 0.87-11.14). In gene-environment interaction, carriers of TGF-beta1 -509TT genotype with tobacco usage were at higher risk of cervical cancer (OR = 3.67, 95% CI = 0.38-35.1). In conclusion, our data suggest that TGF-beta1 -509T allele confers marginal protection for early stage 1B but risk for stage II of cervical cancer.
authors.affiliation: Department of Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow-226014, India.
authors.forename: Hariom
authors.initials: H
authors.lastname: Singh
authors.forename: Meenu
authors.initials: M
authors.lastname: Jain
authors.forename: Balraj
authors.initials: B
authors.lastname: Mittal
mesh_terms: D000328:Adult; D003841:Deoxycytidine / Q000235:genetics; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D007194:India; D008875:Middle Aged; D009367:Neoplasm Staging; D016017:Odds Ratio; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics*; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D013936:Thymidine / Q000235:genetics; D014030:Tobacco, Smokeless / Q000009:adverse effects; D053773:Transforming Growth Factor beta1 / Q000235:genetics*; D002583:Uterine Cervical Neoplasms / Q000235:genetics* / Q000473:pathology
chemical_list: D053773:Transforming Growth Factor beta1; D003841:Deoxycytidine; D013936:Thymidine