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BMC Cancer
Published in: BMC Cancer 1/2015

Open Access 01-12-2015 | Research article

Chromosomal instability as a prognostic marker in cervical cancer

Authors: Christine How, Jeff Bruce, Jonathan So, Melania Pintilie, Benjamin Haibe-Kains, Angela Hui, Blaise A Clarke, David W Hedley, Richard P Hill, Michael Milosevic, Anthony Fyles, Fei-Fei Liu

Published in: BMC Cancer | Issue 1/2015

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Abstract

Background

Cervical cancer is the third most common cancer in women globally, and despite treatment, distant metastasis and nodal recurrence will still develop in approximately 30% of patients. The ability to predict which patients are likely to experience distant relapse would allow clinicians to better tailor treatment. Previous studies have investigated the role of chromosomal instability (CIN) in cancer, which can promote tumour initiation and growth; a hallmark of human malignancies. In this study, we sought to examine the published CIN70 gene signature in a cohort of cervical cancer patients treated at the Princess Margaret (PM) Cancer Centre and an independent cohort of The Cancer Genome Atlas (TCGA) cervical cancer patients, to determine if this CIN signature associated with patient outcome.

Methods

Cervical cancer samples were collected from 79 patients, treated between 2000–2007 at the PM, prior to undergoing curative chemo-radiation. Total RNA was extracted from each patient sample and analyzed using the GeneChip Human Genome U133 Plus 2.0 array (Affymetrix).

Results

High CIN70 scores were significantly related to increased chromosomal alterations in TCGA cervical cancer patients, including a higher percentage of genome altered and a higher number of copy number alterations. In addition, this same CIN70 signature was shown to be predictive of para-aortic nodal relapse in the PM Cancer Centre cohort.

Conclusions

These findings demonstrate that chromosomal instability plays an important role in cervical cancer, and is significantly associated with patient outcome. For the first time, this CIN70 gene signature provided prognostic value for patients with cervical cancer.
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Metadata
Title
Chromosomal instability as a prognostic marker in cervical cancer
Authors
Christine How
Jeff Bruce
Jonathan So
Melania Pintilie
Benjamin Haibe-Kains
Angela Hui
Blaise A Clarke
David W Hedley
Richard P Hill
Michael Milosevic
Anthony Fyles
Fei-Fei Liu
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2015
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-015-1372-0

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