The patient with COVID-19 mRNA vaccine-associated myopericarditis presented increased levels of other Th1-type cytokines and chemokines (IFN-γ, IL-7, IL-15, and CCL4), pro-inflammatory cytokines (IL-6, IL-12p40, and TNF-α), and anti-inflammatory cytokines (IL-1Ra and IL-10) compared with healthy controls (Figures 1E, F and Supplementary Table 1). This evidence concerns the gene CCL4 and COVID-19.