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BMC Cancer
Published in: BMC Cancer 1/2004

Open Access 01-12-2004 | Research article

Chromosomal amplifications, 3q gain and deletions of 2q33-q37 are the frequent genetic changes in cervical carcinoma

Authors: Pulivarthi H Rao, Hugo Arias-Pulido, Xin-Yan Lu, Charles P Harris, Hernan Vargas, Fang F Zhang, Gopeshwar Narayan, Achim Schneider, Mary Beth Terry, Vundavalli VVS Murty

Published in: BMC Cancer | Issue 1/2004

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Abstract

Background

Carcinoma of uterine cervix is the second most common cancers among women worldwide. Combined radiation and chemotherapy is the choice of treatment for advanced stages of the disease. The prognosis is poor, with a five-year survival rate ranging from about 20–65%, depending on stage of the disease. Therefore, genetic characterization is essential for understanding the biology and clinical heterogeneity in cervical cancer (CC).

Methods

We used a genome-wide screening method – comparative genomic hybridization (CGH) to identify DNA copy number changes in 77 patients with cervical cancer. We applied categorical and survival analyses to analyze whether chromosomal changes were related to clinico-pathologic characteristics and patients survival.

Results

The CGH analysis revealed a loss of 2q33-q37 (57.1%), gain of 3q (54.5%) and chromosomal amplifications (20.77%) as frequent genetic changes. A total of 15 amplified chromosomal sites were detected in 16 cases that include 1p31, 2q32, 7q22, 8q21.2-q24, 9p22, 10q21, 10q24, 11q13, 11q21, 12q15, 14q12, 17p11.2, 17q22, 18p11.2, and 19q13.1. Recurrent amplified sites were noted at 11q13, 11q21, and 19q13.1. The genomic alterations were further evaluated for prognostic significance in CC patients, and we did not find any correlation with a number of clinical or histological parameters. The tumors harboring HPV18 exhibited higher genomic instability compared to tumors with HPV 16.

Conclusions

This study demonstrated that 2q33-q37 deletions, 3q gains and chromosomal amplifications as characteristic changes in invasive CC. These genetic alterations will aid in the identification of novel tumor suppressor gene(s) at 2q33-q37 and oncogenes at amplified chromosomal sites. Molecular characterization of these chromosomal changes utilizing the current genomic technologies will provide new insights into the biology and clinical behavior of CC.
Appendix
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Metadata
Title
Chromosomal amplifications, 3q gain and deletions of 2q33-q37 are the frequent genetic changes in cervical carcinoma
Authors
Pulivarthi H Rao
Hugo Arias-Pulido
Xin-Yan Lu
Charles P Harris
Hernan Vargas
Fang F Zhang
Gopeshwar Narayan
Achim Schneider
Mary Beth Terry
Vundavalli VVS Murty
Publication date
01-12-2004
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2004
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-4-5

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