A group of scientists has identified a genetic variant that substantially increases the risk for developing schizophrenia in Ashkenazi Jewish and other populations. The study, published by Cell Press on August 5th in the American Journal of Human Genetics, associates a deletion on chromosome 3 with increased incidence of schizophrenia. Schizophrenia is a psychiatric illness that affects ~1% of the world population. Characterized by delusions, hallucinations, and disorganized thinking, it is a devastating disorder. A group of researchers led by Stephen Warren, Ph.D... 
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