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Science News for July 30, 1998


A New Gene For Mental Retardation

Researchers identified a strong association between a 12 bp mutation in a newly discovered X-chromosome gene and X-linked mental retardation. The mutation was found in 7 percent of all institutionalized mentally retarded males surveyed, as well as in higher frequency among those with Autism.

SourceMolecular Psychiatry·JournalMolecular Psychiatry·DateJul 30, 1998

Hallucinations In Schizophrenia: Genetic Findings

Researchers investigated whether a specific serotonin transporter gene polymorphism is associated with psychosis and hallucinations in schizophrenia. Patients with the ll genotype had significantly higher ratings for psychosis and increased intensity of hallucinations compared to those with other genotypes.

SourceMolecular Psychiatry·JournalMolecular Psychiatry·DateJul 30, 1998