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DMRfinder: efficiently identifying differentially methylated regions from MethylC-seq data.

John M Gaspar1, Ronald P Hart2

  • 1Department of Pharmaceutics, Rutgers University, Piscataway, NJ, USA. jsh58@wildcats.unh.edu.

BMC Bioinformatics
|December 1, 2017
PubMed
Summary
This summary is machine-generated.

DMRfinder efficiently identifies differentially methylated regions from DNA methylation sequencing data. This novel pipeline offers unbiased and fast analysis, outperforming existing software in accuracy and speed.

Keywords:
Bisulfite sequencingCpG islandsDNA methylationSingle-linkage clustering

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Area of Science:

  • Epigenetics
  • Genomics
  • Bioinformatics

Background:

  • DNA methylation is a key epigenetic modification studied using bisulfite sequencing.
  • Analyzing methylation requires bioinformatics pipelines to identify differentially methylated regions (DMRs).
  • Existing tools often suffer from bias and high computational demands.

Purpose of the Study:

  • To develop a novel computational pipeline, DMRfinder, for efficient identification of DMRs.
  • To address limitations of existing software regarding bias and computational efficiency.
  • To integrate all post-alignment analysis steps for bisulfite sequencing data into a single package.

Main Methods:

  • DMRfinder employs modified single-linkage clustering of methylation sites.
  • It utilizes beta-binomial hierarchical modeling and Wald tests for methylation level comparison.
  • The pipeline analyzes novel methylation sites, methylation linkage, and multiple sample groups simultaneously.

Main Results:

  • DMRfinder demonstrated high efficiency and accuracy in identifying DMRs.
  • Benchmarking showed DMRfinder produced fewer false positives compared to alternative software.
  • DMRfinder completed analyses significantly faster than other computational approaches.

Conclusions:

  • DMRfinder is the first integrated package for post-alignment analysis of bisulfite sequencing data.
  • It offers a highly efficient, unbiased, and fast method for DMR identification.
  • DMRfinder is free, open-source, and supported on Linux.