Genome-wide cross-trait analysis and Mendelian randomization reveal a shared genetic etiology and causality between
Xin Huang1, Minhao Yao2, Peixin Tian2
1School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
Insights
COVID-19 and venous thromboembolism (VTE) share genetic links, particularly involving genes related to blood clotting. This research clarifies the genetic basis, aiding in understanding and managing these interconnected conditions.
Area of Science:
- Genetics
- Immunology
- Epidemiology
Background:
- Venous thromboembolism (VTE) affects up to one-third of COVID-19 patients.
- The shared genetic basis between VTE and COVID-19 remains unclear.
Purpose of the Study:
- To investigate the shared genetic etiology and causal relationship between COVID-19 and VTE.
- To identify specific genetic loci and biological pathways involved.
Main Methods:
- Utilized summary-level genetic data from the COVID-19 Host Genetics Consortium and UK Biobank.
- Employed cross-trait and co-localization analyses, enrichment analysis, and bi-directional Mendelian randomization.
Main Results:
- Identified shared genetic loci (ABO, ADAMTS13, FUT2) associated with coagulation functions.
- Found shared biological processes related to coagulation and immunity.
- Established bi-directional causal links between VTE and COVID-19 traits, and SARS-CoV-2 infection and VTE.
Conclusions:
- Provides evidence for a shared genetic etiology between COVID-19 and VTE.
- Enhances understanding of the underlying mechanisms of COVID-19 and VTE.
- Offers insights for the prevention and comorbidity management of COVID-19.
Abstract:
Venous thromboembolism occurs in up to one-third of patients with COVID-19. Venous thromboembolism and COVID-19 may share a common genetic architecture, which has not been clarified. To fill this gap, we leverage summary-level genetic data from the latest COVID-19 host genetics consortium and UK Biobank and examine the shared genetic etiology and causal relationship between COVID-19 and venous thromboembolism. The cross-trait and co-localization analyses identify 2, 3, and 4 shared loci between venous thromboembolism and severe COVID-19, COVID-19 hospitalization, SARS-CoV-2 infection respectively, which are mapped to ABO, ADAMTS13, FUT2 genes involved in coagulation functions. Enrichment analysis supports shared biological processes between COVID-19 and venous thromboembolism related to coagulation and immunity. Bi-directional Mendelian randomization suggests that venous thromboembolism was associated with higher risk of three COVID-19 traits, and SARS-CoV-2 infection was associated with a higher risk of venous thromboembolism. Our study provides timely evidence for the genetic etiology between COVID-19 and venous thromboembolism (VTE). Our findings contribute to the understanding of COVID-19 and VTE etiology and provide insights into the prevention and comorbidity management of COVID-19.
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