Comparing Two Peanut Desensitization Protocols in Preschool Children: A Real-World Clinical Practice
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Published on: August 21, 2015
Adnan Al Ali1, Karen Sigman1, Roy Khalaf2
1Division of Allergy and Clinical Immunology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, Québec, Canada.
Insights
Peanut desensitization using peanut puffs significantly reduced allergic reaction severity in children compared to crushed peanuts. Younger children benefited most, while older children may require tailored approaches.
Area of Science:
- Allergy and Immunology
- Pediatric Medicine
- Clinical Trial Research
Background:
- Peanut allergy is a prevalent childhood food allergy with significant health implications.
- Oral immunotherapy (OIT) is a treatment option for peanut allergy.
- This study compares the effectiveness and safety of OIT using peanut puffs versus crushed peanuts.
Purpose of the Study:
- To evaluate the efficacy of peanut puffs versus crushed peanuts in oral immunotherapy for peanut allergy.
- To assess the safety and reaction severity associated with different OIT formulations.
- To identify factors influencing reaction severity during peanut OIT.
Main Methods:
- 191 children with diagnosed peanut allergy were enrolled in a comparative study.
- Participants received OIT with either crushed peanuts or peanut puffs.
- Reaction severity was analyzed using regression models, adjusting for confounders.
Main Results:
- Peanut puff OIT reduced reaction severity by a factor of 3.94 compared to crushed peanuts.
- Older age was associated with a 1.20-fold increased odds of reacting to a particular severity level.
- The study included a median age of 1.95 years, with 75.1% having eczema and 12.7% asthma.
Conclusions:
- Peanut puffs show promise in mitigating allergic reaction severity during OIT, particularly in younger children.
- Age-specific desensitization protocols may be necessary due to increased risk in older children.
- Modified OIT strategies can improve safety and tolerability in pediatric peanut allergy management.
Introduction:
Peanut allergy is the main food allergy in childhood and poses significant health concerns. This study aimed to critically evaluate the effectiveness and safety of oral immune therapy (OIT) using crushed peanuts versus peanut puffs.
Methods:
Children with an allergist diagnosed peanut allergy based on a history of an IgE-mediated reaction and a positive skin prick test for peanuts were recruited at the Montreal Children's Hospital and the Children's Clinic located in Montreal. Based on age and personal preference, initial doses of peanut were given in either puff (Bamba) or crushed peanut form. Patients continued the same dose for 2-5 weeks at home, filled out a symptom diary, and returned to the clinic for up-dosing until maintenance was reached (2 teaspoons of peanut butter). A continuation ratio regression model was used to evaluate the effect of the allergen type on the severity of anaphylactic and allergic reactions (ARs) during OIT while adjusting for potential confounders.
Results:
Between October 2020 and June 2023, 191 children (59.6% male; median age 1.95 years) were recruited. Most patients (75.1%) had eczema, and 12.7% had asthma. Oral desensitization was performed using one of two strategies according to the allergist: crushed peanut (n = 60 [31.4%]) and peanut puff (n = 131 [68.6%]). Of the participants, the consumption of puff lowered reaction severity by a factor of 3.94 (95% CI, 1.6-9.6), in comparison to crushed peanuts. Older age markedly elevates the adjusted odds of reacting to a particular severity level as compared to a lower level by 1.20 (95% CI, 1-1.4).
Conclusion:
Modified peanut desensitization using peanut puffs has shown potential in reducing the severity of ARs in younger children. Older children may experience a higher risk of severe reactions, indicating the need for age-specific approaches to desensitization protocols.
