Eosinophilic Gastrointestinal Disorders Registry

Eosinophilic gastrointestinal disorders (EGIDs) comprise a family of disorders that includes Eosinophilic Esophagitis (EoE), Eosinophilic Gastritis (EG), Eosinophilic Gastroenteritis (EGE), and Eosinophilic Colitis (EC). The natural history of EGIDs is not well characterized. The aim of this registry is to create a comprehensive prospective database of EGID patients as a foundation towards an improved understanding of disease progression and pathophysiologic mechanism. There is a critical need to understand the relationship between disease mechanism, treatment response, measurements of disease severity, and noninvasive disease activity monitoring strategies. Characterization of the spectrum of clinical phenotype of EGIDs is important in the search for novel pathogenic molecules/pathways to inform targeted treatment strategies. This study proposes to establish an EGID patient registry comprised of data collected from patients at Lurie Children's Hospital of Chicago undergoing standard of care evaluation, diagnosis, and treatment for EGIDs. The registry aims to characterize the clinical phenotype of EGIDs by examining (1) clinical, endoscopic, and histologic characteristics of EGID patients compared to non-EGID controls; (2) clinical, endoscopic, and histologic response of EGID patients to treatment; (3) functional assessment of the esophagus in patients undergoing evaluation for and with established diagnosis of EoE; (4) patient-reported quality of life and symptom scales; (5) the association of EGIDs with inherited Connective Tissue Disorders (CTDs) and dysautonomia, and (6) cellular and molecular biomarkers of disease severity. Our aim is to perform a prospective analysis of all EoE, EG, EGE, and EC patients, as well as patients suspected of having an EGID evaluated at Lurie Children's Hospital. Patients who are suspected of having an EGID and those with an established diagnosis of an EGID will be approached for recruitment into the registry. The data and samples collected during this study are important to this study and to future research related to EGIDs. The data and samples will be used as indicated within this protocol and remaining samples and data will be stored and kept for future research studies on gastrointestinal diseases.