On analysing the correlation between overall marker concentration and COVID-19 WHO severity score (ranging from 1-10), there were no associations observed for IL-1β, IL-4 or IL-12p70 (all p>0.05, Figure 2A) and a negative association was seen for TGF-β (p<0.001, Figure 2B). This evidence concerns the gene TGFB1 and COVID-19.