Subsequently, Jimenez-Aponte et al. (2014) [20], in a case–control study, observed that patients with EoE had statistically significantly higher serum levels of Eotaxin-3, as assessed by Quantikine Human Eotaxin-3 Immunoassay, than the healthy group, but that the concentration of Eotaxin-3 was not directly correlated with the eosinophil count in biopsies. The gene discussed is CCL26; the disease is eosinophilic esophagitis.