Removing unwanted variation in a differential methylation analysis of Illumina HumanMethylation450 array data
- Author(s)
- Maksimovic, J; Gagnon-Bartsch, JA; Speed, TP; Oshlack, A;
- Details
- Publication Year 2015-05-18,Volume 43,Issue #16,Page e106
- Journal Title
- Nucleic Acids Res
- Publication Type
- Journal Article
- Abstract
- Due to their relatively low-cost per sample and broad, gene-centric coverage of CpGs across the human genome, Illumina's 450k arrays are widely used in large scale differential methylation studies. However, by their very nature, large studies are particularly susceptible to the effects of unwanted variation. The effects of unwanted variation have been extensively documented in gene expression array studies and numerous methods have been developed to mitigate these effects. However, there has been much less research focused on the appropriate methodology to use for accounting for unwanted variation in methylation array studies. Here we present a novel 2-stage approach using RUV-inverse in a differential methylation analysis of 450k data and show that it outperforms existing methods.
- Publisher
- OUP
- Research Division(s)
- Bioinformatics
- PubMed ID
- 25990733
- Publisher's Version
- https://doi.org/10.1093/nar/gkv526
- Open Access at Publisher's Site
http://nar.oxfordjournals.org/content/43/16/e106.long- NHMRC Grants
- NHMRC/1051402, NHMRC/575503, NHMRC/1051481,
- Terms of Use/Rights Notice
- Refer to copyright notice on published article.
Creation Date: 2015-05-22 11:19:37
Last Modified: 2015-09-22 04:20:16