Blanchard et al., found a genetic polymorphism in CCL-26 (eotaxin-3), a gene important for eosinophil chemotaxis, present in about 13% of patients with EoE, who overexpressed CCL-26 by 50-foldcompared with healthy controls (218, 221, 223). The gene discussed is CCL26; the disease is eosinophilic esophagitis.