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X-linkage and manic-depressive illness: a reassessment
1Department of Psychiatry, Columbia University College of Physicians and Surgeons, New York, New York.
Social Biology
|January 1, 1991
Summary
A gene linked to bipolar affective illness may be located on the X-chromosome in some patients. Further research is needed to confirm this genetic link due to complex inheritance patterns.
Area of Science:
- Genetics
- Psychiatry
- Epidemiology
Background:
- Bipolar affective illness (manic depression) has a complex inheritance pattern.
- Previous studies have investigated potential genetic links to bipolar disorder.
Purpose of the Study:
- To review genetic-epidemiological and linkage data concerning X-linked inheritance of bipolar affective illness.
- To evaluate the hypothesis of an X-chromosome gene predisposing to bipolar disorder in a subset of patients.
Main Methods:
- Review of existing genetic-epidemiological data.
- Analysis of linkage studies utilizing chromosomal markers.
- Re-evaluation of published research findings.
Main Results:
- Overall findings suggest a potential X-linked gene predisposing to bipolar affective illness in a subgroup of cases.
- Conflicting results and methodological uncertainties were identified in the reviewed studies.
Conclusions:
- The hypothesis of an X-chromosome gene predisposing to bipolar disorder remains plausible but requires further investigation.
- Additional research, including new linkage data and re-analysis of existing data, is necessary to clarify this genetic association.