Evaluating the effects of circulating inflammatory proteins as drivers and therapeutic targets for severe COVID-19

Area of Science:

• Immunology
• Genetics
• Infectious Diseases

Background:

• Previous studies noted links between inflammation and COVID-19.
• Identifying specific causal inflammatory proteins for severe COVID-19 remains unclear.

Purpose of the Study:

• To investigate the causal impact of 91 circulating inflammatory proteins on severe COVID-19 using Mendelian randomization.
• To identify proteins that may increase or decrease the risk of hospitalization and critical illness due to COVID-19.

Main Methods:

• Mendelian randomization analysis was performed using genome-wide association study (GWAS) summary statistics for 91 inflammation-related proteins.
• Data included large cohorts for hospitalized and critical COVID-19 cases.
• Sensitivity analyses were conducted to ensure result reliability.

Main Results:

• Seven proteins showed a positive causal effect on severe COVID-19 risk.
• Five proteins demonstrated a protective effect against severe COVID-19.
• Specific proteins like IL-10RB, FGF-19, and CCL-2 increased risk, while CXCL11, CDCP1, and IFNG showed protective effects.

Conclusions:

• This research pinpoints specific inflammatory proteins associated with increased or decreased risk of severe COVID-19.
• These identified proteins hold potential significance for developing novel therapeutic strategies for COVID-19.