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Old 11-18-2011, 02:20 AM   #1
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Default RNA-Seq: ReCount: A multi-experiment resource of analysis-ready RNA-seq gene count da

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ReCount: A multi-experiment resource of analysis-ready RNA-seq gene count datasets.

BMC Bioinformatics. 2011 Nov 16;12(1):449

Authors: Frazee AC, Langmead B, Leek JT

Abstract
ABSTRACT: BACKGROUND: RNA sequencing is a flexible and powerful new approach for measuring gene, exon, or isoform expression. To maximize the utility of RNA sequencing data, new statistical methods are needed for clustering, differential expression, and other analyses. A major barrier to the development of new statistical methods is the lack of RNA sequencing datasets that can be easily obtained and analyzed in common statistical software packages such as R. To speed up the development process, we have created a resource of analysis-ready RNA-sequencing datasets. Description: ReCount is an online resource of RNA-seq gene count tables and auxilliary data. Tables were built from raw RNA sequencing data from 18 different published studies comprising 475 samples and over 8 billion reads. Using the Myrna package, reads were aligned, overlapped with gene models and tabulated into gene-by-sample count tables that are ready for statistical analysis. Count tables and phenotype data were combined into Bioconductor ExpressionSet objects for ease of analysis. ReCount also contains the Myrna manifest files and R source code used to process the samples, allowing statistical and computational scientists to consider alternative parameter values. CONCLUSIONS: By combining datasets from many studies and providing data that has already been processed from .fastq format into ready-to-use .RData and .txt files, ReCount facilitates analysis and methods development for RNA-seq count data. We anticipate that ReCount will also be useful for investigators who wish to consider cross-study comparisons and alternative normalization strategies for RNA-seq.


PMID: 22087737 [PubMed - as supplied by publisher]



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