Polimorfismo-174(G/C) na regiao promotora do gene da interleucina 6 e o risco de cancer de colo do utero: estudo caso-controle

• Ano de defesa: 2006
• Autor(a) principal: Nogueira-de-Souza, Naiara Corrêa [UNIFESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: Câncer cervical; Interleucina-6; Polimorfismo; Fator de risco; Neoplasias do colo do útero
• Link de acesso: http://repositorio.unifesp.br/handle/11600/9938

Recent data implicate that cytokine gene polymorphisms are important in pathogenesis of various neoplastic and nonneoplastic human diseases, and it was recently suggested that polymorphisms in interleukin (IL)-6 might increase the risk of gynecological malignancies, including cervical carcinomas. The aim of this case-control study is to compare the IL-6 polymorphisms in cervical cancer patients and healthy controls and to assess whether any of these polymorphisms would increase the risk of developing cervical cancer. The material in this case-control study consists of 56 patients with cervical carcinoma and 253 population based control subjects, all ethnic Brazilian women. Control subjects were cancer-free women, following a negative cervical cytology and colposcopy. IL-6 genotyping was performed using a polymerase chain reaction–based restriction fragment length polymorphism. Distribution of the GG, GC, and CC genotypes in cases and controls was significantly different (P=0.033). Compared with the GG genotype as reference, the adjusted odds ratio for the combined GC and CC genotypes in cancer patients was 1.90 (95% confidence interval, 1.1–3.4). These data suggest that women carrying at least one C genotype in their IL-6 promoter region (–174G/C) are at higher risk of developing cervical cancer.