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Related Experiment Videos

Partial trisomy chromosome 5 cosegregating with schizophrenia.

A S Bassett1, B C McGillivray, B D Jones

  • 1Department of Psychiatry, Health Sciences Centre Hospital, University of British Columbia, Vancouver, Canada.

Lancet (London, England)
|April 9, 1988
PubMed
Summary

A distinct autosomal abnormality, partial trisomy 5, was found in two relatives with schizophrenia. This genetic finding suggests chromosome 5 may hold genes influencing schizophrenia development.

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Area of Science:

  • Genetics
  • Psychiatry
  • Human Disease

Background:

  • Schizophrenia is a complex psychiatric disorder with a significant genetic component.
  • Previous studies suggest genetic factors contribute to schizophrenia etiology, but specific chromosomal regions remain largely unidentified.

Purpose of the Study:

  • To investigate a potential genetic linkage between an observed autosomal abnormality and schizophrenia in a family.
  • To identify chromosomal regions associated with schizophrenia susceptibility.

Main Methods:

  • Clinical examination of two related individuals with schizophrenia and dysmorphic features.
  • Karyotyping and genetic analysis to identify chromosomal abnormalities.
  • Pedigree analysis to track the inheritance of the abnormality and schizophrenia.

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Main Results:

  • A distinct autosomal abnormality, specifically a partial trisomy of chromosome 5, was identified in both affected individuals.
  • The abnormality cosegregated with schizophrenia within the family, indicating a potential genetic link.

Conclusions:

  • The partial trisomy of chromosome 5 is strongly associated with schizophrenia in this family.
  • This finding implicates chromosome 5 as a potential location for genes influencing schizophrenia risk.