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Annotation

Mill J, Tang T, Kaminsky Z, Khare T, Yazdanpanah S, Bouchard L, Jia P, Assadzadeh A, Flanagan J, Schumacher A, Wang SC, Petronis A. Epigenomic profiling reveals DNA-methylation changes associated with major psychosis. Am J Hum Genet . 2008 Mar ; 82(3):696-711. PubMed Abstract

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Primary News: Epigenetic Analysis Finds Widespread DNA Methylation Changes in Psychosis

Comment by:  Dennis Grayson
Submitted 26 March 2008 Posted 27 March 2008
  I recommend this paper

The paper by Mill et al. is one of the first comprehensive attempts to examine changes in methylation across the entire genome in patients with various diagnoses of mental illness. The study is well designed, extensive, and uses fairly new technology to examine changes in methylation profiles across the genome. In the frontal cortex, the authors provide evidence for psychosis-associated differences in DNA methylation in numerous loci, including those involved in glutamatergic and GABAergic transmission, brain development, and other processes linked with disease etiology. Methylation in the frontal cortex of the BDNF gene is correlated with a non-synonymous SNP previously associated with major psychosis. These data provide further support for an epigenetic origin of major psychosis, as evidenced by DNA methylation-induced changes likely important to gene expression.

In many ways, this seems reminiscent of the trend in genetics several years ago when the inclination was to move from single gene loci association and linkage studies to genomewide scans. The only downside of...  Read more


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