IL4 and COVID-19: The stratification of COVID-19 patients according to the presence or absence of cardiovascular involvement (CI) showed a trend towards increased plasma levels of several plasmatic cytokines/chemokines, which reached statistical significance for IL-1 β, IL-2, IL-4, IL-6, IL-7, IL-13, and IL-17 (ANOVA, p adjusted <0.01 to <0.001) (Supplementary Figure S2).