Age-Appropriate Low Dosing for Food Protein-Induced Enterocolitis Syndrome Oral Food Challenges: Proposing a...

Area of Science:

• Pediatric Allergy and Immunology
• Gastroenterology
• Clinical Nutrition

Background:

• Current oral food challenge (OFC) protocols for Food Protein-Induced Enterocolitis Syndrome (FPIES) lack standardization, leading to variable diagnostic outcomes and potential for severe reactions.
• Existing evidence suggests most FPIES patients react to small amounts of food, indicating a need for revised challenge protocols.

Purpose of the Study:

• To propose a practical, standardized OFC dosing protocol for FPIES.
• To enhance patient safety, diagnostic accuracy, and facilitate structured food reintroduction in FPIES management.

Main Methods:

• Development of a standardized OFC protocol based on published evidence and clinical experience.
• Recommendation of a cumulative 25% age-appropriate serving (AAS) dose for most FPIES OFCs, with a 4-hour observation period.
• Inclusion of modified protocols for patients with severe FPIES history and atypical FPIES presentations.

Main Results:

• The proposed protocol aims for improved diagnostic accuracy and enhanced patient safety during FPIES OFCs.
• A 25% AAS dose is suggested as a safe and effective starting point for most FPIES OFCs, with gradual up-titration at home.
• Modified protocols address specific patient needs, including those with severe reactions or atypical FPIES.

Conclusions:

• Standardization of FPIES OFC protocols is crucial for consistent diagnosis and management.
• The proposed 25% AAS dosing strategy enhances safety and efficacy in FPIES OFCs.
• Implementing this protocol will facilitate data harmonization for future FPIES research.