Factors predicting tolerance of egg allergy.

Area of Science:

• Pediatric Allergy and Immunology
• Food Hypersensitivity Research
• Clinical Immunology

Background:

• Egg allergy is a prevalent food allergy in pediatric populations.
• The trajectory of egg allergy, including resolution and tolerance development, exhibits significant international variability.
• Understanding the natural history and risk factors for egg allergy is crucial for effective management.

Purpose of the Study:

• To determine the typical age of resolution for IgE-mediated egg allergy in children.
• To identify clinical factors that predict the development of tolerance to egg allergy.
• To provide insights into the natural progression of egg allergy.

Main Methods:

• Recruitment of children diagnosed with IgE-mediated egg allergy.
• Evaluation of clinical history, laboratory data, and age at tolerance.
• Confirmation of egg tolerance through standardized oral food challenges.

Main Results:

• The median age for achieving egg tolerance was 56 months (approximately 4.7 years).
• Egg allergy resolved in 74.6% of children by age 10 years.
• Absence of allergic rhinitis (aHR=2.86) and lack of egg yolk allergy (aHR=1.91) were significant independent predictors of earlier egg tolerance.

Conclusions:

• The median age of achieving tolerance to egg allergy is 56 months.
• Absence of allergic rhinitis and lack of egg yolk allergy are strong predictors of successful tolerance development.
• These findings aid in predicting the course of egg allergy and informing clinical management strategies.