Sex-Dependent Shared and Nonshared Genetic Architecture Across Mood and Psychotic Disorders

Gabriëlla A.M. Blokland*, Jakob Grove, Chia Yen Chen, Chris Cotsapas, Stuart Tobet, Robert Handa, Stephan Ripke, Benjamin M. Neale, Aiden Corvin, James T.R. Walters, Kai How Farh, Peter A. Holmans, Phil Lee, Brendan Bulik-Sullivan, David A. Collier, Hailiang Huang, Tune H. Pers, Ingrid Agartz, Esben Agerbo, Margot AlbusMadeline Alexander, Farooq Amin, Silviu A. Bacanu, Martin Begemann, Richard A. Belliveau, Judit Bene, Sarah E. Bergen, Elizabeth Bevilacqua, Tim B. Bigdeli, Donald W. Black, Richard Bruggeman, Nancy G. Buccola, Randy L. Buckner, William Byerley, Wiepke Cahn, Guiqing Cai, Dominique Campion, Rita M. Cantor, Vaughan J. Carr, Noa Carrera, Mark Hansen, Thomas Hansen, Sandra Meier (Member of study group), Line Olsen (Member of study group), Marie Bækvad-Hansen, Thomas F. Hansen (Member of study group), Wesley Thompson (Member of study group), Shantel Marie Weinsheimer (Member of study group), Merete Nordentoft (Member of study group), Thomas Werge (Member of study group), Schizophrenia Working Group of the Psychiatric Genomics Consortium, Bipolar Disorder Working Group of the Psychiatric Genomics Consortium, Major Depressive Disorder Working Group of the Psychiatric Genomics Consortium, Sex Differences Cross-Disorder Analysis Group of the Psychiatric Genomics Consortium, iPSYCH

*Corresponding author for this work
56 Citations (Scopus)

Abstract

BACKGROUND: Sex differences in incidence and/or presentation of schizophrenia (SCZ), major depressive disorder (MDD), and bipolar disorder (BIP) are pervasive. Previous evidence for shared genetic risk and sex differences in brain abnormalities across disorders suggest possible shared sex-dependent genetic risk.

METHODS: We conducted the largest to date genome-wide genotype-by-sex (G×S) interaction of risk for these disorders using 85,735 cases (33,403 SCZ, 19,924 BIP, and 32,408 MDD) and 109,946 controls from the PGC (Psychiatric Genomics Consortium) and iPSYCH.

RESULTS: Across disorders, genome-wide significant single nucleotide polymorphism-by-sex interaction was detected for a locus encompassing NKAIN2 (rs117780815, p = 3.2 × 10-8), which interacts with sodium/potassium-transporting ATPase (adenosine triphosphatase) enzymes, implicating neuronal excitability. Three additional loci showed evidence (p < 1 × 10-6) for cross-disorder G×S interaction (rs7302529, p = 1.6 × 10-7; rs73033497, p = 8.8 × 10-7; rs7914279, p = 6.4 × 10-7), implicating various functions. Gene-based analyses identified G×S interaction across disorders (p = 8.97 × 10-7) with transcriptional inhibitor SLTM. Most significant in SCZ was a MOCOS gene locus (rs11665282, p = 1.5 × 10-7), implicating vascular endothelial cells. Secondary analysis of the PGC-SCZ dataset detected an interaction (rs13265509, p = 1.1 × 10-7) in a locus containing IDO2, a kynurenine pathway enzyme with immunoregulatory functions implicated in SCZ, BIP, and MDD. Pathway enrichment analysis detected significant G×S interaction of genes regulating vascular endothelial growth factor receptor signaling in MDD (false discovery rate-corrected p < .05).

CONCLUSIONS: In the largest genome-wide G×S analysis of mood and psychotic disorders to date, there was substantial genetic overlap between the sexes. However, significant sex-dependent effects were enriched for genes related to neuronal development and immune and vascular functions across and within SCZ, BIP, and MDD at the variant, gene, and pathway levels.

Original languageEnglish
JournalBiological Psychiatry
Volume91
Issue number1
Pages (from-to)102-117
Number of pages16
ISSN0006-3223
DOIs
Publication statusPublished - 1 Jan 2022

Keywords

  • Bipolar disorder
  • Genome-wide association study
  • Genotype-by-sex interaction
  • Major depressive disorder
  • Schizophrenia
  • Sex differences
  • Receptors, Vascular Endothelial Growth Factor
  • Genetic Predisposition to Disease
  • Genome-Wide Association Study
  • Endothelial Cells
  • Humans
  • Male
  • Sex Characteristics
  • Depressive Disorder, Major/genetics
  • Bipolar Disorder/genetics
  • Psychotic Disorders/genetics
  • Female
  • Sulfurtransferases
  • Polymorphism, Single Nucleotide
  • Schizophrenia/genetics

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