Eosinophilic oesophagitis, food allergy, diet, ImmunoCAP ISAC, serum IgE. Eosinofiele oesofagitis, voedselallergie, dieet, ImmunoCAP ISAC, serum IgE.
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: • Previous clinical diagnosis of EoO confirmed by histopathology e.g. presence of >15 eosinophilic granulocytes per high power field (hpf) in mid- or proximal-oesophageal biopsies • (Cross-)sensitization against at least 1 food allergen as measured by ImmunoCAP ISAC (microarray) • Age 18 – 75 years • Written informed consent
Exclusion criteria
Exclusion criteria: • Inability to stop previously started topical or systemic corticosteroids, leukotriene inhibitors, or monoclonal antibodies, in the two month period preceding and during the study • Use of NSAIDs • History of peptic ulcer disease • History of Barrett’s oesophagus • History of GI cancer • History of GI tract surgery (except appendectomy or cholecystectomy) • ASA class IV or V.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Peak eosinophilia in mucosal biopsies of proximal, mid- and distal oesophagus at baseline and after targeted dietary treatment defined as complete (peak eosinophil count, 50% reduction of peak eosinophil count). | — |
Secondary
| Measure | Time frame |
|---|---|
| • Symptoms of dysphagia; • Quality of life, as measured by the SF-36 and the FAQLQ-AF questionnaire; • Endoscopic signs of EoO; • Peak mastocytosis in mucosal biopsies of proximal, mid- and distal oesophagus; • Serum levels of biomarkers for EoO: eosinophil count, total IgE, IL-5, IL-13, eotaxin-3, eosinophil derived neurotoxin (EDN); • RNA-expression of biomarkers for EoO in oesophageal tissue; • Evaluation of dietary intake at baseline of EoO-patients • Comparison of results of the ImmunoCAP ISAC allergy test with standard skin prick test results. | — |
Contacts
Motility Center, room C2-231 Academic Medical Center PO Box 22660