title: G-308A TNF-alpha polymorphism is associated with an increased risk of invasive cervical cancer.
abstract: Cervical cancer is initiated by high-risk human papillomaviruses (HPV-16 and HPV-18), but an effective immune response may control the progression of this disease. Tumor necrosis factor-alpha (TNF-alpha) is a pro-inflammatory cytokine, that has been implicated in several cancers. In a case-control study, we evaluated the association between the G-308A TNF-alpha promoter polymorphism and the risk for invasive cervical cancer (ICC). TNF-alpha polymorphism was analyzed by PCR-RFLP and confirmed by sequencing. DNA was obtained from blood samples of 439 individuals, including 195 patients with ICC and 244 normal healthy controls. According to our results, women carrying the A allele present a twofold increased risk of developing ICC (p=0.006; OR=1.88; 95% CI [1.20-2.94]). In conclusion, our study suggests that the presence of the high producer allele -308A in the TNF-alpha gene appears to be associated with an increased risk for the development of ICC.
authors: Molecular Oncology Laboratory, Portuguese Institute of Oncology, Porto, Portugal. isabel.duarte@gmail.com
authors: Isabel
authors: I
authors: Duarte
authors: Alexandra
authors: A
authors: Santos
authors: Hugo
authors: H
authors: Sousa
authors: Raquel
authors: R
authors: Catarino
authors: Daniela
authors: D
authors: Pinto
authors: Ana
authors: A
authors: Matos
authors: Deolinda
authors: D
authors: Pereira
authors: José
authors: J
authors: Moutinho
authors: Paulo
authors: P
authors: Canedo
authors: José Carlos
authors: JC
authors: Machado
authors: Rui
authors: R
authors: Medeiros
mesh_terms: D014408:Biomarkers, Tumor / Q000235:genetics; D004252:DNA Mutational Analysis / Q000379:methods; D005260:Female; D020022:Genetic Predisposition to Disease / Q000453:epidemiology; D005820:Genetic Testing / Q000379:methods*; D006801:Humans; D015994:Incidence; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011174:Portugal / Q000453:epidemiology; D015995:Prevalence; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics*; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology* / Q000235:genetics / Q000378:metabolism*
chemical_list: D014408:Biomarkers, Tumor; D014409:Tumor Necrosis Factor-alpha