DOZ047.120: The role of proton-pump inhibitors in eosinophilic esophagitis: focus on esophageal atresia children

Introduction Since recently, after detection of eosinophilic predominant inflammation of esophagus a trial with proton-pump inhibitors (PPIs) was needed to individuate children with PPI-responsive esophageal eosinophilia (PPI-REE), only those non-responders received eosinophilic esophagitis (EoE) diagnosis. In 2018 updated international consensus suggested removing the PPI trial as a diagnostic criterion and consider PPIs as a treatment together with diets and topical steroids. The role of PPIs is evaluated in children with esophageal atresia (EA) and EoE versus EoE from general population. Method A retrospective chart review of both children with EA and EoE followed-up from at January 2005 has been performed. According to ESPGHAN guidelines published in 2014 patients showing eosinophilic inflammation received high-dose PPI trial to identified PPI-REE. Those non-responders were labeled as EoE and underwent to dietary and/or topical steroid treatment. Demographics and disease characteristics of EA patients with EoE were analyzed and compared with those with EoE from general population. Results Overall, 370 EA and 118 EoE patients were analyzed. Of them 15 EA-EoE patients were detected. Consequently, in our cohorts, 4.0% of EA patients developed EoE. Male-to-female prevalence ratio was of 2.55 with no difference in gender prevalence between groups. At diagnosis EoE-EA children were significantly younger compared to EoE group (mean: 5.1 vs 10.8 years; P Conclusion Similar gender distribution and high prevalence of allergy suggest that common genetic susceptibility factors for EoE exist. However, high prevalence of PPI-REE coupled early EoE onset might also suggest that other factors (e.g. esophageal motility disorders) might play a physiopathological role in EoE development in EA children. Our study suggests that a stepwise approach with PPIs as a first-line treatment for EoE management in EA children should still be considered.