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Department of Human and Hereditary Pathology, Anatomic Pathology Section, University of Pavia and Instituto di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo [P. T., N. V., R. Z., P. M., L. C.], and Department of Genetics and Microbiology, University of Pavia, [M. R. S., G. N. R.], 27100 Pavia, Italy
A case-control study was performed to investigate the risk of cervical cancer associated with p53 polymorphism at codon 72, encoding either arginine or proline. It has been recently suggested that the arginine isoform increases the susceptibility to invasive cervical cancer; however, data remain controversial. The polymorphism was examined by both allele-specific PCR and RFLP analysis in 101 patients with primary cervical cancer and in 140 healthy women of the same age and from the same geographical area. The distribution of p53 genotypes in cervical cancer patients and in controls was not significantly different (P = 0.445), and homozygosity for arginine at residue 72 was not associated with an increased risk for cervical cancer (odds ratio, 0.81; 95% confidence interval, 0.47–1.42; P = 0.52). Similarly, different genotype distribution and increased risk were not observed when patients versus controls were analyzed according to human papillomavirus status and cancer histotype. Therefore, no evidence of association between homozygosity for p53 arginine and cervical cancer was found in our population sample.
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