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Causal associations between major depressive disorder and COVID-19

Ancha Baranova1,2, Yi Zhao3, Hongbao Cao1

  • 1School of Systems Biology, George Mason University, Fairfax, Virginia, USA.

General Psychiatry
|April 17, 2023
PubMed

Insights

Major depressive disorder (MDD) increases susceptibility to COVID-19, but COVID-19 does not causally affect MDD. This highlights the need for mental health support during pandemics.

Area of Science:

  • Psychiatry
  • Infectious Diseases
  • Genetics

Background:

  • Investigating the bidirectional relationship between major depressive disorder (MDD) and coronavirus disease 2019 (COVID-19).
  • Examining if MDD exacerbates COVID-19 outcomes or if genetic predisposition to COVID-19 triggers MDD.

Purpose of the Study:

  • To assess bidirectional causal associations between MDD and COVID-19.
  • To explore potential genetic and molecular links between these conditions.

Main Methods:

  • Utilized genetic correlation and Mendelian randomization (MR) analyses for association assessment.
  • Conducted literature-based network analysis to identify molecular pathways connecting MDD and COVID-19.

Main Results:

  • MDD showed positive genetic correlations with COVID-19 outcomes (rg: 0.10-0.15).
  • Genetic liability to MDD was linked to increased COVID-19 infection risk (OR=1.05, 95% CI: 1.00-1.10).
  • No causal effect of COVID-19 genetic liability on MDD was found; immunity-related genes may mediate the link.

Conclusions:

  • MDD may increase susceptibility to COVID-19.
  • Emphasizes the need for enhanced social support and mental health interventions for individuals with mood disorders during pandemics.
Abstract

Keywords:
COVID-19Mendelian randomization analysisdepressiondepressive disorder, majorgenetics, behavioral

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