Among all the markers, the best correlation with the severe form of COVID-19 was observed for the serum CRP levels (R = 0.415, p < 0.001, Figure 8A), results confirmed also by the ROC analysis (AUC = 0.720, 95% CI 0.625-0.816, p< 0.0001). The gene discussed is CRP; the disease is COVID-19.