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.
Abstract:
Venous thromboembolism (VTE) occurs in up to one third patients with COVID-19. VTE and COVID-19 may share a common genetic architecture, which has not been clarified yet. To fill this gap, we leveraged summary-level genetic data from the latest COVID-19 host genetics consortium and UK Biobank and examined the shared genetic etiology and causal relationship between COVID-19 and VTE. The cross-trait analysis identified 8, 11, and 7 shared loci between VTE and severe COVID-19, COVID-19 hospitalization, SARS-CoV-2 infection respectively, in 13 genes involved in coagulation and immune function and enriched in the lung. Co-localization analysis identified eight shared loci in ABO, ADAMTS13 and FUT2 genes. Bi-direction Mendelian randomization suggested that VTE was associated with higher risks of all COVID-19 related traits, and SARS-CoV-2 infection was associated with higher risk of VTE. Our study provided timely evidence and novel insights into the genetic etiology between COVID-19 and VTE.
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