IL22RA1 and myocarditis: Our data suggest that dysregulated IL-22–IL-22R signal can modulate expressions of considerable genes and regulate the productions of inflammatory cytokines, verified by the fact that IL-22 neutralization significantly promoted the circulating and cardiac IL-17, IL-6, TNF-α, which have been identified as important pro-inflammatory cytokines and exacerbating myocarditis by inflammation and immunity [4,5].