Abstract

Endoscopy, standard-of-care for monitoring Eosinophilic Esophagitis (EoE), assesses mucosal inflammation. The Esophageal String Test (EST®), a minimally invasive swallowed capsule and immunoassays, quantifies EoE inflammation. We determined whether the EST/EoEScore can monitor disease in patients undergoing treatment. Thirty-three samples from 14 EoE patients (7 children, 7 adults) who underwent repeat endoscopies and ESTs were studied. Biopsies were analyzed for peak eosinophil counts; ESTs analyzed for EoEScores. Eosinophil counts and EoEScores significantly correlated during treatment, distinguishing patients with active EoE from treatment-associated remissions for 93.9% of ESTs performed. The EST can be used to longitudinally monitor responses to treatment in EoE.

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