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Published in: Tumor Biology 6/2013

01-12-2013 | Research Article

Prognostic value of cyclin E expression in breast cancer: a meta-analysis

Authors: Sheng Gao, Jing-Jing Ma, Cheng Lu

Published in: Tumor Biology | Issue 6/2013

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Abstract

Cyclin E is an important regulator of cell cycle progression. Various studies examined the relationship between cyclin E overexpression with the clinical outcome in patients with breast cancer but yielded conflicting results. Electronic databases updated to May 2013 were searched to find relevant studies. A meta-analysis was conducted with eligible studies which quantitatively evaluated the relationship between cyclin E overexpression and survival of patients with breast cancer. Survival data were aggregated and quantitatively analyzed. We conducted a final analysis of 7,759 patients from 23 eligible studies and evaluated the correlation between cyclin E overexpression and survival in patients with breast cancer. Combined hazard ratios suggested that cyclin E overexpression had an unfavorable impact on overall survival (OS) (hazard ratio (HR) = 1.30, 95 % confidence interval (CI), 1.12–1.49) and breast cancer-specific survival (BCSS) (HR = 1.48, 95 % CI, 1.03–1.93), but not disease-free survival (HR = 1.11; 95 % CI, 0.96–1.27) in patients with breast cancer. Significantly, risks were found among stage I–II breast cancer for (HR = 1.75; 95 % CI, 1.30–2.19). Cyclin E overexpression is associated with poor OS and BCSS in breast cancer.
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Metadata
Title
Prognostic value of cyclin E expression in breast cancer: a meta-analysis
Authors
Sheng Gao
Jing-Jing Ma
Cheng Lu
Publication date
01-12-2013
Publisher
Springer Netherlands
Published in
Tumor Biology / Issue 6/2013
Print ISSN: 1010-4283
Electronic ISSN: 1423-0380
DOI
https://doi.org/10.1007/s13277-013-0915-8

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