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Application of Biochip Microfluidic Technology to Detect Serum Allergen-specific Immunoglobulin E sIgE
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Macadamia nut-specific IgE levels for predicting anaphylaxis.

Kei Kubota1, Ken-Ichi Nagakura1,2, Takaaki Itonaga1

  • 1Department of Pediatrics, National Hospital Organization, Sagamihara National Hospital, Sagamihara, Japan.

Pediatric Allergy and Immunology : Official Publication of the European Society of Pediatric Allergy and Immunology
|September 26, 2022
PubMed
Summary
This summary is machine-generated.

Macadamia nut-specific immunoglobulin E (Md-sIgE) levels can predict anaphylaxis in children with macadamia nut allergy (MdA). Higher Md-sIgE levels indicate an increased risk of severe allergic reactions.

Keywords:
allergyanaphylaxiscut-offdiagnosismacadamia nutprobability curvespecific IgE

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Area of Science:

  • Allergy and Immunology
  • Pediatric Allergy
  • Clinical Diagnostics

Background:

  • Macadamia nut allergy (MdA) poses a significant risk of anaphylaxis.
  • The diagnostic utility of macadamia nut-specific immunoglobulin E (Md-sIgE) in predicting anaphylaxis remains unclear.

Purpose of the Study:

  • To investigate the predictive value of Md-sIgE levels for anaphylaxis in children with suspected MdA.

Main Methods:

  • Study included children with suspected MdA undergoing oral food challenges (OFCs).
  • Macadamia nut allergy (MdA) was confirmed by OFC failure or immediate symptoms post-ingestion.
  • Macadamia nut-specific immunoglobulin E (Md-sIgE) levels were measured.

Main Results:

  • A total of 41 children were analyzed; 21 were diagnosed with MdA.
  • Md-sIgE levels were significantly higher in children who experienced anaphylaxis compared to those who did not (7.97 vs. 1.92 kUA /L).
  • An optimal Md-sIgE cut-off value of 3.76 kUA /L demonstrated high accuracy (AUC 0.92) in predicting anaphylaxis.

Conclusions:

  • Md-sIgE levels are a valuable tool for predicting anaphylaxis in children with macadamia nut allergy.
  • Elevated Md-sIgE levels warrant careful monitoring for anaphylaxis risk.