CCL26 and eosinophilic esophagitis: The inhibitory effect of treatment with conventional doses of PPIs on the expression of eotaxin 3, and secondarily on the development of the disease [39,40,41], would therefore be reflected in the results of this study and would settle the hitherto ambiguous observations confirming [42] or denying [33,43,44] the importance of eotaxin 3 concentration in monitoring the course of EoE.