Abstract
The paper investigates the role of the association of polymorphic variants of the tissue plasminogen activator inhibitor 1 (PAI-1) and angiotensin-converting enzyme (ACE) genes in 244 patients with coronavirus infection with varying degrees of disease severity (mild, moderate, and the group of deaths). The influence of the age factor in conjunction with various genotypes on the course of coronavirus infection is also being studied. An analysis of the frequencies of alleles and genotypes of ACE found statistically significant differences: the D allele is associated with the severity and outcome of COVID-19. The I/D genotype is associated with a milder course of the disease, while the D/D genotype increases the likelihood of death.
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