Although there is no single 'gene for schizophrenia' some genes are known to raise people's risk. Researchers from the Universite de Montreal have carried out a detailed analysis of a large database of patients and added another gene to the list - SHANK3. The gene has previously been linked to autism and is involved in maintaining the physical structure of nerve cells. Mutations in the gene result in abnormalities in cell shapes - abnormalities that have been observed in some schizophrenia patients.
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