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Large study finds genetic 'overlap' between schizophrenia, bipolar disorder
Date:9/21/2011

Knowledge about the biological origin of diseases like schizophrenia, bipolar disorder and other psychiatric conditions is critical to improving diagnosis and treatment.

In an effort to push the field forward, three UCLA researchers, along with scientists from more than 20 countries, have been taking part in one of the largest collaborative efforts in psychiatry a genome-wide study involving more than 50,000 study participants aimed at identifying which genetic variants make people susceptible to psychiatric disease.

This collaborative, the Psychiatric Genome-Wide Association Study Consortium (PGC), now reports in the current online edition of the journal Nature Genetics that it has discovered that common genetic variants contribute to a person's risk of schizophrenia and bipolar disorder.

The PGC's studies provide new molecular evidence that 11 regions on the genome are strongly associated with these diseases, including six regions not previously observed. The researchers also found that several of these DNA variations contribute to both diseases.

The findings, the researchers say, represent a significant advance in understanding the causes of these chronic, severe and debilitating disorders.

The UCLA researchers who contributed to the schizophrenia study are Roel A. Ophoff, a professor of psychiatry and human genetics and one of the founding principal investigators of the schizophrenia portion of the study; Dr. Nelson Freimer, a professor of psychiatry and director of the Center for Neurobehavioral Genetics at the Semel Institute for Neuroscience and Human Behavior at UCLA; and Rita Cantor, a professor of psychiatry and human genetics.

Schizophrenia and bipolar disorder are common and often devastating brain disorders. Some of the most prominent symptoms of schizophrenia are persistent delusions, hallucinations and cognitive problems. Bipolar disorder is characterized by severe, episodic mood sw
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Contact: Mark Wheeler
mwheeler@mednet.ucla.edu
310-794-2265
University of California - Los Angeles
Source:Eurekalert

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