Ashleigh A Olson1, Michael D Evans2, Mats W Johansson3, Chloe H Kim1, David M Manthei1, Eric A Gaumnitz4, Sameer K Mathur5. 1. Division of Allergy, Pulmonary and Critical Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. 2. Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. 3. Division of Gastroenterology, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. 4. Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. 5. Division of Allergy, Pulmonary and Critical Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. Electronic address: sm4@medicine.wisc.edu.
Abstract
BACKGROUND: Evaluation of IgE-mediated food sensitivity is frequently performed for patients with eosinophilic esophagitis (EoE). However, the clinical relevance of identifying IgE-mediated sensitivity to foods in adults is unclear. OBJECTIVE: To determine whether EoE associated with food or aeroallergen sensitivity represents a phenotype of EoE with distinct clinical or biological features. METHODS: A medical record review identified 257 patients with a diagnosis of EoE evaluated in the adult allergy clinic at the University of Wisconsin Hospital and Clinics from 2008 to 2013. Patient records were reviewed to capture measures of disease severity, endoscopy results, pathology reports, allergy testing, medical management and patient-reported outcomes. RESULTS: Evaluation of food sensitization with skin prick testing and/or serum IgE was performed for 93% of patients. Sensitization to at least 1 food was identified in 54% of patients who were more likely to report concomitant asthma, allergic rhinitis, eczema, and/or food allergy compared with nonfood sensitive patients. Aeroallergen sensitivity was identified in 87% of patients tested. Clinical characteristics, including EoE symptoms, disease severity, endoscopic findings, peripheral eosinophilia, and patient-reported outcomes, did not differ between food sensitive and non-food sensitive patients. However, on endoscopy, aeroallergen sensitive patients were more likely to have strictures and less likely to exhibit felinization compared with non-aeroallergen sensitized patients. CONCLUSION: Adults with EoE and IgE-mediated food sensitivity are not phenotypically different than non-food sensitive patients. There is no clear clinical utility in identifying food sensitivity in adults with EoE. Further studies are needed to determine whether aeroallergen sensitivity represents a distinct phenotype of EoE.
BACKGROUND: Evaluation of IgE-mediated food sensitivity is frequently performed for patients with eosinophilic esophagitis (EoE). However, the clinical relevance of identifying IgE-mediated sensitivity to foods in adults is unclear. OBJECTIVE: To determine whether EoE associated with food or aeroallergen sensitivity represents a phenotype of EoE with distinct clinical or biological features. METHODS: A medical record review identified 257 patients with a diagnosis of EoE evaluated in the adult allergy clinic at the University of Wisconsin Hospital and Clinics from 2008 to 2013. Patient records were reviewed to capture measures of disease severity, endoscopy results, pathology reports, allergy testing, medical management and patient-reported outcomes. RESULTS: Evaluation of food sensitization with skin prick testing and/or serum IgE was performed for 93% of patients. Sensitization to at least 1 food was identified in 54% of patients who were more likely to report concomitant asthma, allergic rhinitis, eczema, and/or food allergy compared with nonfood sensitive patients. Aeroallergen sensitivity was identified in 87% of patients tested. Clinical characteristics, including EoE symptoms, disease severity, endoscopic findings, peripheral eosinophilia, and patient-reported outcomes, did not differ between food sensitive and non-food sensitive patients. However, on endoscopy, aeroallergen sensitive patients were more likely to have strictures and less likely to exhibit felinization compared with non-aeroallergen sensitized patients. CONCLUSION: Adults with EoE and IgE-mediated food sensitivity are not phenotypically different than non-food sensitive patients. There is no clear clinical utility in identifying food sensitivity in adults with EoE. Further studies are needed to determine whether aeroallergen sensitivity represents a distinct phenotype of EoE.
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