Genome Biology

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SPACE: an algorithm to predict and quantify alternatively spliced isoforms using microarrays

Miguel A Anton1, Dorleta Gorostiaga1, Elizabeth Guruceaga1, Victor Segura1, Pedro Carmona-Saez2, Alberto Pascual-Montano3, Ruben Pio4,5, Luis M Montuenga4,6 and Angel Rubio1*

Author Affiliations

1 CEIT and TECNUN, University of Navarra, San Sebastián, Spain

2 Integromics SL, Madrid, Spain

3 Computer Architecture Department, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Madrid 28040, Spain

4 Center for Applied Medical Research, University of Navarra, Pamplona, Spain

5 Department of Biochemistry, University of Navarra, Pamplona, Spain

6 Department of Histology and Pathology, University of Navarra, Pamplona, Spain

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Genome Biology 2008, 9:R46 doi:10.1186/gb-2008-9-2-r46

Published: 29 February 2008

Abstract

Exon and exon+junction microarrays are promising tools for studying alternative splicing. Current analytical tools applied to these arrays lack two relevant features: the ability to predict unknown spliced forms and the ability to quantify the concentration of known and unknown isoforms. SPACE is an algorithm that has been developed to (1) estimate the number of different transcripts expressed under several conditions, (2) predict the precursor mRNA splicing structure and (3) quantify the transcript concentrations including unknown forms. The results presented here show its robustness and accuracy for real and simulated data.