alexa Association of p53 codon 72 polymorphism with advanced lung cancer: the Arg allele is preferentially retained in tumours arising in Arg Pro germline heterozygotes.
Molecular Biology

Molecular Biology

Journal of Cytology & Histology

Author(s): Papadakis ED, Soulitzis N, Spandidos DA

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Abstract The association of p53 codon 72 polymorphism with cancer has been investigated by several scientific groups with controversial results. In the present study, we examined the genotypic frequency of this polymorphism in 54 patients with advanced lung cancer and 99 normal controls from the geographical region of Greece. Sputum and bronchial washing samples from each patient were assayed for the presence of human papillomavirus. Codon 72 heterozygous (Arg/Pro) patients were also analysed for loss of heterozygosity at the TP53 locus, in order to determine the lost p53 allele (Arg or Pro). p53 Arg/Arg genotype was significantly increased in lung cancer patients compared to normal controls (50\% vs 24.2\%, P<0.002). Human papillomavirus was detected only in two patients (3.7\%). Loss of heterozygosity at the TP53 locus was found in 14 out of 27 Arg/Pro patients (51.85\%). The Pro allele was lost in 11 cases (78.6\%), while the Arg allele was lost in three (21.4\%). Our results suggest that p53 codon 72 Arg homozygosity is associated with advanced lung cancer, and that the Arg allele is preferentially retained in patients heterozygous for this polymorphism. On the other hand, human papillomavirus infection does not seem to play an important role in lung carcinogenesis.
This article was published in Br J Cancer and referenced in Journal of Cytology & Histology

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