Comparative survival analysis of breast cancer microarray studies identifies important prognostic genetic pathways
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- 作者：Jeffrey C Miecznikowski (1) (2)
Dan Wang (2)
Song Liu (2)
Lara Sucheston (1) (2)
David Gold (1) (2) - 刊名：BMC Cancer
- 出版年：2010
- 出版时间：December 2010
- 年：2010
- 卷：10
- 期：1
- 全文大小：311KB
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35. The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2407/10/573/prepub - 作者单位：Jeffrey C Miecznikowski (1) (2)
Dan Wang (2)
Song Liu (2)
Lara Sucheston (1) (2)
David Gold (1) (2)
1. Department of Biostatistics, University at Buffalo (SUNY), 14214, Buffalo, New York, USA
2. Department of Biostatistics, Roswell Park Cancer Institute, 14263, Buffalo, New York, USA - ISSN：1471-2407
文摘
Background An estimated 12% of females in the United States will develop breast cancer in their lifetime. Although, there are advances in treatment options including surgery and chemotherapy, breast cancer is still the second most lethal cancer in women. Thus, there is a clear need for better methods to predict prognosis for each breast cancer patient. With the advent of large genetic databases and the reduction in cost for the experiments, researchers are faced with choosing from a large pool of potential prognostic markers from numerous breast cancer gene expression profile studies. Methods Five microarray datasets related to breast cancer were examined using gene set analysis and the cancers were categorized into different subtypes using a scoring system based on genetic pathway activity. Results We have observed that significant genes in the individual studies show little reproducibility across the datasets. From our comparative analysis, using gene pathways with clinical variables is more reliable across studies and shows promise in assessing a patient's prognosis. Conclusions This study concludes that, in light of clinical variables, there are significant gene pathways in common across the datasets. Specifically, several pathways can further significantly stratify patients for survival. These candidate pathways should help to develop a panel of significant biomarkers for the prognosis of breast cancer patients in a clinical setting.