Research Suggests Genetic
Risk for Virus-Related Malignancy in Indian Women
(Cervical Cancer-February 11, 2003)
"The objective of
the present study was to determine the codon 72 genotypic frequencies of p53
in Indian women and to analyze the association of this polymorphism with
human papillomavirus (HPV) related cervical cancer (CaCx). We used tissues
derived from 55 women diagnosed with squamous cell carcinoma of the cervix
(of whom 46 were HPV types 16/18 positive) and cervical scrapes derived from
201 cytologically normal women (of whom 84 were HPV types 16/18 positive) as
controls. The DNA isolated from these samples was genotyped for p53
polymorphism by polymerase chain reaction and restriction fragment length
polymorphism method," researchers in India reported.
"The genotypic frequency of
homozygous arginine among women with CaCx was 27% and this did not differ
with the controls. But, proline homozygosity of 33% in the malignant samples
was significantly higher than controls (OR=2.23; 95% CI: 1.14-4.35; P=0.02).
The associated risk of this genotype towards CaCx was more prominent
(OR=2.67; 95% CI: 1.16-6.15; P=0.02) when analysis was restricted to HPV
16/18 positive women," stated P. Bhattacharya and colleagues, Indian
Statistics Institute, Biochemistry Unit.
"Thus, proline homozygosity at
codon 72 of p53 and not arginine homozygosity could be a risk factor for
development of CaCx associated with high risk HPV among Indian women,"
concluded the researchers.
Bhattacharya and colleagues
published their study in Cancer Letters (Proline homozygosity in
codon 72 of p53: a risk genotype for human papillomavirus related cervical
cancer in Indian women. Cancer Lett, 2002;188(1-2):207-211).
The contact person for this
report is S. Sengupta, Indian Statistics Institute, Biochemistry Unit, 203
BT Rd., Kolkata 700108, India.
The information in this
article comes under the major subject areas of Cervical Cancer, Genomics and
Genetics, Gynecology, Infectious Disease, Oncology, Squamous Cancer,
Virology and Women's Health. This article was prepared by Virus Weekly
editors from staff and other reports.
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