RT Journal Article SR Electronic T1 Distribution of p53, GST, and MTHFR Polymorphisms and Risk of Cervical Intraepithelial Lesions in Sicily JF International Journal of Gynecologic Cancer JO Int J Gynecol Cancer FD BMJ Publishing Group Ltd SP 141-146 OP 141-146 DO 10.1111/IGC.0b013e3181c20842 VO 20 IS 1 A1 Antonella Agodi A1 Martina Barchitta A1 Rosalba Cipresso A1 Rubina Marzagalli A1 Nadia La Rosa A1 Melania Caruso A1 Maria Grazia Castiglione A1 Salvatore Travali YR 2010 UL http://ijgc.bmj.com/content/20/1/141-146.abstract AB Objectives: Host factors, including genetic polymorphisms, may explain some of the individual differences in cervical cancer occurrence, and susceptibility information may be useful to address effective and specific preventive strategies for different countries. The purpose of the present study was to investigate the role of p53 codon 72, glutathione S-transferase class mu (GSTM1), glutathione S-transferase class theta (GSTT1), and methylenetetrahydrofolate reductase (MTHFR) C677T polymorphisms on the risk for infection and/or of cervical intraepithelial lesions in women attending a colposcopy service in Catania, Sicily, with an already reported high prevalence of human papillomavirus.Methods: To identify the association among individual genetic polymorphisms, human papillomavirus infection, and histological findings, a case-control study was designed. Furthermore, to assess the combined effects of these polymorphisms on cervical cancer risk, combined genotype frequencies were compared among case patients and controls.Results: Women homozygous for the p53 codon 72 Arg genotype were at a 5.6-fold higher risk for developing cervical intraepithelial neoplasia (CIN) 2 or 3 compared with those showing homozygosity for the Pro genotype or heterozygosity for the Pro/Arg genotype. The GSTM1 and GSTT1 null genotypes were overrepresented in infected patients and in women with CIN 2 or 3, although without any significant associations. A decreased risk for CIN of individuals homozygous for the MTHFR T allele was shown.Conclusions: After multiple logistic analyses, the presence of the allele 677T of the MTHFR gene was the best explaining protective factor against cervical carcinogenesis, and the allelic distribution in the control group followed the Hardy-Weinberg equilibrium expectations. However, the findings of our study still remain to be confirmed by additional and larger population-based surveys.