Causal associations between severe COVID-19 and diseases of seven organs: a proteome-wide mendelian randomization...

Area of Science:

• Genetics
• Immunology
• Epidemiology

Background:

• The COVID-19 pandemic presents a significant global health challenge.
• Existing research indicates links between severe COVID-19 and multi-organ diseases, but causal mechanisms remain unclear.

Purpose of the Study:

• To investigate the causal relationship between severe COVID-19 and diseases affecting seven organs using a proteome-wide Mendelian randomization approach.
• To identify potential protein biomarkers and drug targets associated with severe COVID-19 and organ dysfunction.

Main Methods:

• A proteome-wide Mendelian randomization study was performed using GWAS summary statistics for severe COVID-19 and diseases of the lung, spleen, liver, heart, kidney, testis, and thyroid in European ancestry.
• Primary analysis employed the radial inverse variance-weighted (radial IVW) method, with supporting analyses using inverse variance-weighted (IVW), weighted-median (WM), and MR-Egger methods.
• Phenotype scanning and sensitivity analyses were conducted to ensure result robustness.

Main Results:

• Confirmed associations between severe COVID-19 and specific organ-related diseases, notably Hypothyroidism, strict autoimmune (HTCBSA), Thyroid disorders (TD), and Graves' disease (GD).
• Identified proteins Superoxide Dismutase 2 (SOD2) and TEK Receptor Tyrosine Kinase (TEK) as potentially associated with organ-related diseases and severe COVID-19.
• These identified proteins represent potential therapeutic targets for managing COVID-19 complications.

Conclusions:

• This study provides robust evidence supporting the link between severe COVID-19 and various organ-specific diseases, particularly thyroid conditions.
• The findings highlight SOD2 and TEK as promising targets for further research into therapeutic interventions for COVID-19-related organ damage.