Comparison of risk factors for adverse cardiovascular events in groups of individuals depending on the presence of COVID-19 in their medical history demonstrated a statistically significantly more frequent presence of coronary artery restenosis in the group of patients who had COVID-19, as well as statistically significant differences in laboratory parameters such as the platelet–neutrophil ratio, APTT, fibrinogen, D-dimer, AST, CPK and MB CPK, glucose, and CRP in the study groups (Table 4). The gene discussed is CRP; the disease is COVID-19.