Picture of a sphere with binary code

Making Strathclyde research discoverable to the world...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. It exposes Strathclyde's world leading Open Access research to many of the world's leading resource discovery tools, and from there onto the screens of researchers around the world.

Explore Strathclyde Open Access research content

Common polygenic variation contributes to risk of schizophrenia and bipolar disorder

Purcell, Shaun M and Wray, Naomi R and Stone, Jennifer L and Visscher, Peter M and O'Donovan, Michael C and Sullivan, Patrick F and Sklar, Pamela and , International Schizophrenia Consortium and Pickard, Ben (2009) Common polygenic variation contributes to risk of schizophrenia and bipolar disorder. Nature, 460 (7256). pp. 748-752. ISSN 0028-0836

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Schizophrenia is a severe mental disorder with a lifetime risk of about 1%, characterized by hallucinations, delusions and cognitive deficits, with heritability estimated at up to 80%. We performed a genome-wide association study of 3,322 European individuals with schizophrenia and 3,587 controls. Here we show, using two analytic approaches, the extent to which common genetic variation underlies the risk of schizophrenia. First, we implicate the major histocompatibility complex. Second, we provide molecular genetic evidence for a substantial polygenic component to the risk of schizophrenia involving thousands of common alleles of very small effect. We show that this component also contributes to the risk of bipolar disorder, but not to several non-psychiatric diseases.