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Background: Direct comparisons of childhood- and adulthood-onset eosinophilic esophagitis (EoE) are scarce., Aim: To compare disease characteristics, endoscopic and histological features, allergic concomitances and therapeutic choices across ages., Methods: Cross-sectional analysis of the EoE CONNECT registry., Results: The adulthood-onset cohort (those diagnosed at ≥18y) comprised 1044 patients and the childhood-onset cohort (patients diagnosed at <18 y), 254. Vomiting, nausea, chest and abdominal pain, weight loss, slow eating and food aversion were significantly more frequent in children; dysphagia, food bolus impaction and heartburn predominated in adults. A family history of EoE was present in 16% of pediatric and 8.2% of adult patients (p<0.001). Concomitant atopic diseases did not vary across ages. Median±IQR diagnostic delay (years) from symptom onset was higher in adults (2.7 ± 6.1) than in children (1 ± 2.1; p<0.001). Esophageal strictures and rings predominated in adults (p<0.001), who underwent esophageal dilation more commonly (p = 0.011). Inflammatory EoE phenotypes were more common in children (p = 0.001), who also presented higher eosinophil counts in biopsies (p = 0.015) and EREFS scores (p = 0.017). Despite PPI predominating as initial therapy in all cohorts, dietary therapy and swallowed topical corticosteroids were more frequently prescribed in children (p<0.001)., Conclusions: Childhood-onset EoE has differential characteristics compared with adulthood-onset, but similar response to treatment., Competing Interests: Conflict of Interest AJ Lucendo has served as a speaker, and/or has received research and/or education funding and/or consulting fees from Adare/Ellodi, Dr. Falk Pharma, Regeneron, Dr. Falk Pharma and EsoCap. C. Santander received honoraria as consultant and trainer at Laborie/MMS and Medtronic Covidien AG, and received research funding from AstraZeneca, EsoCap Biotech, Regeneron Pharmaceuticals Inc., Adare Pharmaceuticals Inc., and Dr. Falk Pharma GmbH. J. Alcedo has served as a speaker, consultant and advisory member for or has received research funding from Adare Pharmaceuticals Inc, Abbvie, MSD, Allergan, and Shire Pharmaceuticals. C Gutiérrez-Junquera has received research funding from Dr. Falk Pharma. The remaining authors have no conflict of interest., (Copyright © 2022. Published by Elsevier Ltd.)

Background and Aim: Intravenous corticosteroids remain the first line therapy for severe attacks of ulcerative colitis although up to 30-40% of patients do not respond to treatment. The availability of alternative therapies to colectomy and the knowledge of early predictors of response to corticosteroids should have improved the clinical outcomes of patients with severe refractory ulcerative colitis. The aim of the study is to describe the current need, way of use, and efficacy of rescue therapies, as well as colectomy rates in patients with severe ulcerative colitis flares., Methods: Between January 2005 and December 2011, all patients admitted in three referral centres for a severe ulcerative colitis flare who received intravenous corticosteroids were identified and clinical and biological data were accurately collected. Patients were followed-up until colectomy, death, or date of data collection., Results: Sixty-two flares were included. Initial efficacy of intravenous corticosteroids (mild activity or inactive disease without rescue treatment, at day 7 after starting intravenous corticosteroids) was achieved in 50% of flares, and rescue therapies were used in 27 episodes (43%). After a median follow-up of 18 months, the colectomy rate was 6.5%. Failed oral corticosteroids for the index flare were the only baseline feature that predicted the need for rescue therapy and colectomy., Conclusions: There is a marked reduction in the colectomy rate and an increased use of medical rescue therapies as compared to historical series. Patients worsening while on oral corticosteroids for a moderate flare are at high risk of rescue therapy and colectomy and, therefore, should be directly treated with rescue therapies instead of attempting intravenous corticosteroids., (Copyright © 2016 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.)