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Chapter 17 - The genetics of bipolar disorder

Published online by Cambridge University Press:  05 October 2012

By
John R. Kelsoe
Edited by
John I. Nurnberger, Jr  and
Wade Berrettini
John I. Nurnberger, Jr
Affiliation:
Indiana University School of Medicine
Wade Berrettini
Affiliation:
University of Pennsylvania School of Medicine
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Summary

This chapter reviews the family studies supporting the role of genetics and recent molecular genetic results. Mapping studies using linkage and association methods have had modest success to date despite difficulties in replication between studies. Linkage studies have shown the best support for chromosomal regions: 6q, 8q, 9p, 13q, 14q, and 22q. Several candidate genes first identified in studies of schizophrenia have shown reproducible association in bipolar disorder. Genome-wide association studies (GWAS) have been successful in identifying a few genes with small effects on risk. The data overall suggest a high level of both genic and allelic heterogeneity, as well as, a complex mode of inheritance. The coming availability of economical whole genome sequencing promises availability of complete genomic information. This, and large samples now being collected, may provide the datasets necessary to unravel the genetic complexities of this illness.

Keywords

obsessive-compulsive disordertwin studiesgenome-wide association analysiscandidate chromosomal regionsgeneticsanimal models
Type
Chapter
Information
Principles of Psychiatric Genetics , pp. 196 - 211
Publisher: Cambridge University Press
Print publication year: 2012

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