First, we observed that, among children with EoE, the mean number of eosinophils significantly correlated with ILC count and with concentrations of IgE, CCL22, CCL13, IL-16 and CXCL13 (Spearman correlation, ρ > 0.6; p < 0.05). This evidence concerns the gene CXCL13 and eosinophilic esophagitis.