In summary, specific immune indicators with increased expression in newly diagnosed EoE compared to treated EoE, HC, GERD, UC, and CD were: bFGF, FGF-Receptor 2, IL-13, IL-5, eotaxin, and CCR3 (in order of highest to lowest extent of increased transcript expression). Here, FGF2 is linked to gastroesophageal reflux disease.