Pagnoux, C. et al. showed that macrophage-derived chemokine (MDC)/CCL22, IL-8/CXCL8, MIP-1α, MIP-1β, and TNF-α in EGPA serum were lower than in healthy controls, asthma, or primary hypereosinophilic syndrome [60]. This evidence concerns the gene CCL22 and asthma.