Wheat Allergy: Clinical Phenotypes, Diagnostic Approaches, and Management Strategies

Area of Science:

• Allergy and Immunology
• Food Science
• Occupational Health

Background:

• Wheat allergy presents a wide range of clinical manifestations, including food-induced anaphylaxis (especially wheat-dependent exercise-induced anaphylaxis in adults), baker's asthma from occupational exposure, and atopic dermatitis in children.
• Wheat is increasingly recognized as a trigger for eosinophilic esophagitis across all age groups.
• Wheat proteins, categorized into soluble and insoluble fractions, possess distinct allergenic properties, with specific proteins implicated in different allergic conditions.

Purpose of the Study:

• To review the diverse spectrum of wheat-related allergic diseases.
• To highlight the diagnostic challenges and current management strategies.
• To emphasize the need for improved diagnostics and novel therapies.

Main Methods:

• Literature review of wheat-related allergic diseases.
• Analysis of wheat protein fractions and their allergenic roles.
• Evaluation of diagnostic methods, including component-resolved diagnostics (CRD).
• Assessment of current management approaches for various wheat allergies.

Main Results:

• Wheat allergens include ω-5 gliadin, glutenins, α-amylase inhibitors, and lipid-transfer proteins, triggering distinct reactions.
• Component-resolved diagnostics (CRD) are essential for accurate diagnosis due to complex protein profiles, though current methods may underestimate prevalence.
• Management strategies vary, involving avoidance, cofactor management for WDEIA, workplace controls for baker's asthma, and limited success with oral immunotherapy for pediatric wheat allergy.

Conclusions:

• Accurate diagnosis of wheat allergy requires advanced component-resolved diagnostics (CRD).
• Current management relies on avoidance and tailored strategies, but novel therapeutic approaches are needed.
• Further research into CRD and innovative treatments is essential for improving patient care for wheat-related allergies.