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Whole Genome Association Reveals Schizophrenia Gene

  March, 21 2007 9:28
your information resource in human molecular genetics
A genetic basis for schizophrenia found on both the X and Y chromosomes, is presented online in Molecular Psychiatry. Todd Lencz and colleagues examined over 500,000 genetic markers with a method known as Whole Genome Association (WGA) to determine potential susceptibility genes for the disease.

Schizophrenia is the third-leading cause of disability in the US among individuals aged 15 to 44. This highly heritable disorder shortens patients' life spans by an average of 10 years. It is widely researched, but despite active efforts to identify key genes, the factors contributing to the condition are still poorly understood.

The results from this analysis show a link with schizophrenia from a marker located in a chromosomal region called pseudoautosomal region 1 (PAR1), which is on both the X and Y chromosomes, and was located adjacent to two genes, CSF2RA and IL3RA. These genes, previously thought to play a role in inflammation and autoimmune disorders, produce receptors for two cytokines, GM-CSF and interleukin-3. The involvement of cytokines may help to explain the often-observed autoimmune disorders that accompany schizophrenia. The research team extended the association findings to an independent sequencing sample that exhibited common genetic patterns and rare mutations in the same cytokine gene regions. Together, the results of these two genetic analyses constitute the first examination of these particular cytokine genes as predictors of schizophrenia.

Author contacts:

Todd Lencz (Zucker Hillside Hospital, Glen Oaks, NY, USA)
E-mail: lencz@lij.edu

Editorial contact:

Joyce-Rachel John (Nature Publishing Group, New York, NY, USA)
E-mail: j.john@natureny.com

Abstract available online.

(C) Molecular Psychiatry press release.

Message posted by: Trevor M. D'Souza

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