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FIRMA: a method for detection of alternative splicing from exon array data.

E Purdom1, K M Simpson, M D Robinson

  • 1Department of Statistics, University of California at Berkeley, 367 Evans Hall #3860, Berkeley, CA 94720-3860, USA. epurdom@stat.berkeley.edu

Bioinformatics (Oxford, England)
|June 25, 2008
PubMed
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New methods are needed to analyze alternative splicing data from exon arrays. Finding Isoforms Using Robust Multichip Analysis (FIRMA) detects differential alternative splicing and confirms gene exons.

Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • Alternative splicing is a widespread mechanism in gene expression.
  • Exon and tiling microarrays enable genome-wide measurement of alternative splicing.
  • Novel analytical methods are required for this high-throughput data.

Purpose of the Study:

  • To develop and evaluate a novel method for detecting differential alternative splicing from exon array data.
  • To address the need for robust analysis of genome-wide alternative splicing experiments.

Main Methods:

  • The study presents Finding Isoforms Using Robust Multichip Analysis (FIRMA).
  • FIRMA is designed for Affymetrix exon arrays but is extensible to other array types.
  • The method was validated using simulated data and real biological datasets.

Related Experiment Videos

Main Results:

  • FIRMA effectively detects differential alternative splicing in exon array data.
  • The method was applied to human tissue and matched normal/tumor colon tissue datasets.
  • FIRMA identified exons in multiple genes, validated by reverse transcriptase PCR.

Conclusions:

  • FIRMA provides a robust approach for analyzing alternative splicing from exon array data.
  • The method has potential applications in various genomic and transcriptomic studies.
  • R code for FIRMA is available within the aroma.affymetrix package.