Keywords
Food hypersensitivity
Immunologic desensitization
Oral administration
Immunoglobulin E
Paediatrics
How to Cite
Abstract
Background and objective. Oral immunotherapy (OIT) is an alternative to strict avoidance for the management of some food allergies. The aim of this study is to assess the efficacy and safety of egg OIT in a paediatric allergy outpatient service.
Methods. Retrospective, longitudinal observational study in children with persistent hen egg allergy who received egg OIT. For the build-up phase, dehydrated egg white was used daily. Updosing was performed weekly at the allergy unit, up to a final dose of 4 grams. Maintenance phase was carried out with a daily intake of one egg at least two or three times a week.
Results. 14 patients (6 girls), whose ages ranged from 5 to 13 years (median 5.5 years) were treated with egg OIT. Eleven subject (78.6%) reached total desensitization, and all of them remained desensitized after a median follow-up time of 29 months. The most frequent adverse effects detected during the build-up phase were: oropharyngeal pruritus (9/14), abdominal pain (7/14), and rhinoconjuntivitis (6/14). Eight patients (57.1%) required oral antihistamines, and none received adrenaline. In those subjects that reached total desensitization, a trend to lower specific IgE levels was observed. That trends were statistically significand for whole egg (p = 0.047), egg white (p = 0.031), and ovalbumin (p = 0.016).
Conclusions. Egg OIT was an effective and well tolerated treatment in children with egg allergy.
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