Shared genetic etiology and causality between COVID-19 and venous thromboembolism: evidence from genome-wide cross

Insights

Genetic links between COVID-19 and venous thromboembolism (VTE) were explored. Findings reveal shared genetic factors and a causal relationship, with VTE increasing COVID-19 risk and SARS-CoV-2 infection increasing VTE risk.

Area of Science:

  • Genetics
  • Epidemiology
  • Immunology

Background:

  • Venous thromboembolism (VTE) affects up to one-third of patients with COVID-19.
  • The shared genetic architecture between COVID-19 and VTE remains unclear.
  • Understanding this genetic overlap is crucial for managing VTE risk in COVID-19 patients.

Approach:

  • Leveraged summary-level genetic data from the COVID-19 Host Genetics Consortium and UK Biobank.
  • Conducted cross-trait analysis to identify shared genetic loci between VTE and various COVID-19 traits (severe COVID-19, hospitalization, SARS-CoV-2 infection).
  • Utilized co-localization analysis and bi-directional Mendelian randomization to investigate causal relationships.

Key Points:

  • Identified 8, 11, and 7 shared genetic loci between VTE and severe COVID-19, COVID-19 hospitalization, and SARS-CoV-2 infection, respectively.
  • Eight shared loci in genes like ABO, ADAMTS13, and FUT2 were confirmed through co-localization analysis.
  • Bi-directional Mendelian randomization indicated that VTE increases COVID-19 risk, and SARS-CoV-2 infection increases VTE risk.

Conclusions:

  • Provided evidence for a shared genetic etiology between COVID-19 and VTE.
  • Established a causal link, suggesting VTE as a risk factor for COVID-19 and SARS-CoV-2 infection as a risk factor for VTE.
  • Highlighted the role of coagulation and immune function genes in the genetic overlap between these conditions.

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