Shared Genetic Architecture Between Endometriosis and Psychiatric Conditions May Explain Comorbidity

Area of Science:

• Genetics
• Psychiatry
• Gynecology

Background:

• Endometriosis is a common gynecological disorder with unknown causes and no cure.
• Patients often experience psychiatric issues, potentially due to chronic symptoms or shared biological factors.
• Existing research suggests a need to explore the biological overlap between endometriosis and psychiatric conditions.

Purpose of the Study:

• To investigate the genetic overlap between endometriosis and psychiatric conditions using large-scale genomic data.
• To determine if genetic liability to endometriosis influences psychiatric conditions risk.
• To identify shared genetic architecture and biological pathways.

Main Methods:

• Integration of large-scale genomic data.
• Genome-wide association studies (GWAS) for endometriosis and psychiatric conditions.
• Polygenic and multivariate GWAS analyses to assess shared liability.

Main Results:

• No evidence found for increased psychiatric risk due to endometriosis genetic liability.
• Genetic liability to psychiatric conditions, particularly major depressive disorder, is associated with increased endometriosis risk.
• Extensive shared genetic architecture identified, with nearly all endometriosis variants implicated in depression; 606 independent variants identified for shared liability, implicating brain-related pathways.

Conclusions:

• Shared genetic factors contribute to the comorbidity of endometriosis and psychiatric conditions, especially depression.
• Brain-related biological pathways are implicated in the shared liability.
• Findings provide a basis for mechanistic studies and strategies to address psychiatric comorbidities in endometriosis.