Related Experiment Video
Updated: Jul 29, 2025

Developing a Rat Model for Bipolar Disorder
Published on: May 2, 2025
Genomic SEM Applied to Explore Etiological Divergences in Bipolar Subtypes
Jeremy M Lawrence1,2, Sophie Breunig1,2, Isabelle F Foote1,2
1Institute for Behavioral Genetics, University of Colorado Boulder, Boulder, CO.
Genetic analysis reveals distinct pathways for Bipolar I (BD I) and Bipolar II (BD II) disorder. BD II shows greater genetic overlap with internalizing traits and major depression, challenging its conceptualization as a less severe form of BD.
Area of Science:
- Psychiatric Genetics
- Genomic Epidemiology
Background:
- Bipolar Disorder (BD) encompasses BD I (manic episodes) and BD II (hypomanic and depressive episodes).
- Traditionally, BD II is viewed as less severe than BD I, but evidence is inconclusive.
Conclusions:
- Distinct genetic relationships support the separation of BD subtypes.
- Findings challenge the notion of BD II as a less severe illness due to its genetic links with various clinical traits.
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