ArticleThe World Allergy Organization journal2024
Peanut-specific IgG subclasses as biomarkers of peanut allergy in LEAP study participants.
Article in The World Allergy Organization journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Oral Immunotherapy-Induced Changes in IgE, IgG, and IgA: A Review of Antibody Isotype Shifts and Their Clinical Relevance in Food Allergy.Antibodies (Basel, Switzerland) · 2026Review
- Novel approaches to prevent or cure allergic diseases.Current opinion in immunology · 2025Review
- A new experimental model of peanut allergy in BALB/c and C57BL/6 mice.Frontiers in allergy · 2025Article
- Emerging diagnostic and therapeutic opportunities in food allergy.Frontiers in immunology · 2025Review
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Authors and funding
9 authors.
Funding
Abstract
Antigen-specific IgG2 and IgG3 are rarely measured in food allergy clinical trials despite known function in preventing mast cell and basophil activation. Our objective was to determine whether measuring peanut-specific IgG2 and IgG3 levels would correlate with peanut allergy status. Peanut-specific IgG subclasses were measured via ELISA assays in Learning Early About Peanut allergy (LEAP) trial participants at 5 years of age and were correlated with peanut allergy vs peanut sensitization vs non-peanut allergic and peanut consumption vs peanut avoidance. Peanut-specific IgG1, IgG2, IgG3, and IgG4 levels were significantly different between participants with peanut allergy vs peanut sensitization vs non-peanut allergic, and a multivariate logistic regression model and stepwise selection found that IgG1 most closely associated with peanut allergy status. Similarly, all subclasses differentiated those consuming vs those avoiding peanut, but subsequent modeling found that IgG4 most closely associated with consumption status. Amongst the peanut-specific IgG subclasses, IgG1 was the best biomarker for peanut allergy, while IgG4 was the best biomarker for peanut antigen exposure in this highly atopic cohort. Our study did not find added value from evaluating peanut-specific IgG 2 and 3 as biomarkers of peanut allergy, although they did correlate with peanut allergy. Subsequent studies should assess the value of adding IgG subclasses to multivariate models predicting peanut allergy status.
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