PatternCNV: A versatile tool for detecting copy number changes from exome sequencing data

Chen Wang, Jared M. Evans, Aditya V. Bhagwate, Naresh Prodduturi, Vivekananda Sarangi, Mridu Middha, Hugues Sicotte, Peter T. Vedell, Steven N. Hart, Gavin R. Oliver, Jean Pierre A. Kocher, Matthew J. Maurer, Anne J. Novak, Susan L. Slager, James R. Cerhan, Yan W. Asmann

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Results: We developed a novel method named PatternCNV, which (i) accounts for the read coverage variations between exons while leveraging the consistencies of this variability across different samples; (ii) reduces alignment BAM files to WIG format and therefore greatly accelerates computation; (iii) incorporates multiple QC measures designed to identify outlier samples and batch effects; and (iv) provides a variety of visualization options including chromosome, gene and exon-level views of CNVs, along with a tabular summarization of the exon-level CNVs. Compared with other CNV-calling algorithms using data from a lymphoma exome-seq study, PatternCNV has higher sensitivity and specificity.

Availability and implementation: The software for PatternCNV is implemented using Perl and R, and can be used in Mac or Linux environments. Software and user manual are available at, and R package at

Motivation: Exome sequencing (exome-seq) data, which are typically used for calling exonic mutations, have also been utilized in detecting DNA copy number variations (CNVs). Despite the existence of several CNV detection tools, there is still a great need for a sensitive and an accurate CNV-calling algorithm with built-in QC steps, and does not require a paired reference for each sample.

Original languageEnglish (US)
Pages (from-to)2678-2680
Number of pages3
Issue number18
StatePublished - Sep 15 2014

ASJC Scopus subject areas

  • Statistics and Probability
  • Biochemistry
  • Molecular Biology
  • Computer Science Applications
  • Computational Theory and Mathematics
  • Computational Mathematics


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