FastDMA: an infinium humanmethylation450 beadchip analyzer

PLoS One. 2013 Sep 5;8(9):e74275. doi: 10.1371/journal.pone.0074275. eCollection 2013.

Abstract

DNA methylation is vital for many essential biological processes and human diseases. Illumina Infinium HumanMethylation450 Beadchip is a recently developed platform studying genome-wide DNA methylation state on more than 480,000 CpG sites and a few CHG sites with high data quality. To analyze the data of this promising platform, we developed FastDMA which can be used to identify significantly differentially methylated probes. Besides single probe analysis, FastDMA can also do region-based analysis for identifying the differentially methylated region (DMRs). A uniformed statistical model, analysis of covariance (ANCOVA), is used to achieve all the analyses in FastDMA. We apply FastDMA on three large-scale DNA methylation datasets from The Cancer Genome Atlas (TCGA) and find many differentially methylated genomic sites in different types of cancer. On the testing datasets, FastDMA shows much higher computational efficiency than current tools. FastDMA can benefit the data analyses of large-scale DNA methylation studies with an integrative pipeline and a high computational efficiency. The software is freely available via http://bioinfo.au.tsinghua.edu.cn/software/fastdma/.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenocarcinoma / genetics*
  • Adenocarcinoma of Lung
  • Atlases as Topic
  • Breast Neoplasms / genetics*
  • Carcinoma / genetics*
  • CpG Islands
  • DNA Methylation
  • Female
  • Genome, Human
  • Humans
  • Lung Neoplasms / genetics*
  • Male
  • Models, Statistical*
  • Oligonucleotide Array Sequence Analysis
  • Prostatic Neoplasms / genetics*
  • Software*

Grants and funding

This work is supported by National Basic Research Program of China 2012CB316503 and National Natural Science Foundation of China Nos. 91019016, 31061160497 and 61005040. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.