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Journal of Integrative Bioinformatics

Editor-in-Chief: Schreiber, Falk / Hofestädt, Ralf

Managing Editor: Sommer, Björn

Ed. by Baumbach, Jan / Chen, Ming / Orlov, Yuriy / Allmer, Jens

Editorial Board: Giorgetti, Alejandro / Harrison, Andrew / Kochetov, Aleksey / Krüger, Jens / Ma, Qi / Matsuno, Hiroshi / Mitra, Chanchal K. / Pauling, Josch K. / Rawlings, Chris / Fdez-Riverola, Florentino / Romano, Paolo / Röttger, Richard / Shoshi, Alban / Soares, Siomar de Castro / Taubert, Jan / Tauch, Andreas / Yousef, Malik / Weise, Stephan / Hassani-Pak, Keywan

CiteScore 2017: 0.77

SCImago Journal Rank (SJR) 2017: 0.336

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Volume 4, Issue 3


Supervised classification of combined copy number and gene expression data

S. Riccadonna
  • FBK-irst, via Sommarive 18, I-38100, Povo (Trento), http://mpa.itc.it, Italy
  • DIT, University of Trento, via Sommarive 14, I-38100, Povo (Trento), http://dit.unitn.it, Italy
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ G. Jurman / S. Merler / S. Paoli
  • FBK-irst, via Sommarive 18, I-38100 Povo (Trento), http://mpa.itc.it Italy
  • DIT, University of Trento, via Sommarive 14, I-38100 Povo (Trento), http://dit.unitn.it, Italy
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ A. Quattrone
  • CIBIO and DISI, University of Trento, via Sommarive 14, I-38100 Povo (Trento), http://www.unitn.it, Italy
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ C. Furlanello
Published Online: 2016-10-18 | DOI: https://doi.org/10.1515/jib-2007-74


In this paper we apply a predictive profiling method to genome copy number aberrations (CNA) in combination with gene expression and clinical data to identify molecular patterns of cancer pathophysiology. Predictive models and optimal feature lists for the platforms are developed by a complete validation SVM-based machine learning system. Ranked list of genome CNA sites (assessed by comparative genomic hybridization arrays – aCGH) and of differentially expressed genes (assessed by microarray profiling with Affy HG-U133A chips) are computed and combined on a breast cancer dataset for the discrimination of Luminal/ ER+ (Lum/ER+) and Basal-like/ER- classes. Different encodings are developed and applied to the CNA data, and predictive variable selection is discussed. We analyze the combination of profiling information between the platforms, also considering the pathophysiological data. A specific subset of patients is identified that has a different response to classification by chromosomal gains and losses and by differentially expressed genes, corroborating the idea that genomic CNA can represent an independent source for tumor classification.

About the article

Published Online: 2016-10-18

Published in Print: 2007-12-01

Citation Information: Journal of Integrative Bioinformatics, Volume 4, Issue 3, Pages 168–185, ISSN (Online) 1613-4516, DOI: https://doi.org/10.1515/jib-2007-74.

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© 2007 The Author(s). Published by Journal of Integrative Bioinformatics.. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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