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Prediction and uncertainty in the analysis of gene expression profiles

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons50564

Spang,  Rainer
Dept. of Computational Molecular Biology (Head: Martin Vingron), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Zitation

Spang, R., Zuzan, H., West, M., Nevins, J., Blanchette, C., & Marks, J. R. (2002). Prediction and uncertainty in the analysis of gene expression profiles. GCB ' 01, 0033-0033.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-8C18-6
Zusammenfassung
We have developed a complete statistical model for the analysis of tumor specific gene expression profiles. The approach provides investigators with a global overview on large scale gene expression data, indicating aspects of the data that relate to tumor phenotype, but also summarizing the uncertainties inherent in classification of tumor types. We demonstrate the use of this method in the context of a gene expression profiling study of 27 human breast cancers. The study is aimed at defining molecular characteristics of tumors that reflect estrogen receptor status. In addition to good predictive performance with respect to pure classification of the expression profiles, the model also uncovers conflicts in the data with respect to the classification of some of the tumors, highlighting them as critical cases for which additional investigations are appropriate.