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. 2014 Apr 1;30(7):923-30.
doi: 10.1093/bioinformatics/btt656. Epub 2013 Nov 13.

featureCounts: an efficient general purpose program for assigning sequence reads to genomic features

Yang Liao  1 , Gordon K Smyth, Wei Shi
Affiliations

featureCounts: an efficient general purpose program for assigning sequence reads to genomic features

Yang Liao et al. Bioinformatics. .

Abstract

Motivation: Next-generation sequencing technologies generate millions of short sequence reads, which are usually aligned to a reference genome. In many applications, the key information required for downstream analysis is the number of reads mapping to each genomic feature, for example to each exon or each gene. The process of counting reads is called read summarization. Read summarization is required for a great variety of genomic analyses but has so far received relatively little attention in the literature.

Results: We present featureCounts, a read summarization program suitable for counting reads generated from either RNA or genomic DNA sequencing experiments. featureCounts implements highly efficient chromosome hashing and feature blocking techniques. It is considerably faster than existing methods (by an order of magnitude for gene-level summarization) and requires far less computer memory. It works with either single or paired-end reads and provides a wide range of options appropriate for different sequencing applications.

Availability and implementation: featureCounts is available under GNU General Public License as part of the Subread (http://subread.sourceforge.net) or Rsubread (http://www.bioconductor.org) software packages.

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