• To provide investigators in the Division of Gastroenterology with the sources of clinical information for basic research and clinical studies of inflammatory bowel diseases. • To provide optimal and standardized collection of stool for such studies.

EGID Partners is an online cohort of patients with eosinophilic gastrointestinal diseases (EGIDs), like eosinophilic esophagitis (EoE), eosinophilic gastritic (EG), eosinophilic gastroenteritis (EGE), and/or eosinophilic colitis (EC). It is a way to conduct important clinical research through surveys, and by filling out the initial survey, as well as follow-up surveys every 6 months, you can help answer important questions about living with EGIDs. We are also looking for people without EGIDs to provide information as well, so we can make comparisons between those do and don't have EGIDs. Adults as well as parents/caregivers of children are eligible. Find out more at www.egidpartners.org

To (1) test the Rome V Diagnostic Questionnaire, a new version of a questionnaire designed to assess the presence of 25 different Disorders of Gut-Brain Interaction (DGBI), (2) estimate the population prevalence of each of these 25 disorders in the adult population of different countries, (3) evaluate which demographic and personal factors are associated with having these DGBI, and (4) assess their impact on quality of life and emotional wellbeing.

INDUCTION: To evaluate the efficacy of icotrokinra versus placebo in inducing clinical remission MAINTENANCE: To evaluate the efficacy of a maintenance regimen of icotrokinra versus placebo in achieving clinical remission in participants with moderately to severely active UC who were induced into clinical response with icotrokinra