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Optimal cutoff values of allergen-specific immunoglobulin E to house dust mites and animal dander based on skin-prick test results: Analysis in 16,209 patients with allergic rhinitis

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Author(s)
Sang Duk HongGwanghui RyuMin Young SeoJong In JeongHyo Yeol KimSeung-Kyu ChungHun-Jong Dhong
Keimyung Author(s)
Jeong, Jong In
Department
Dept. of Otorhinolaryngology (이비인후과학)
Journal Title
American Journal of Rhinology & Allergy
Issued Date
2018
Volume
32
Issue
1
Abstract
BACKGROUND:

The most common tests for allergen sensitization in patients with allergic rhinitis are the skin-prick test (SPT) and an in vitro test to detect serum specific immunoglobulin E (sIgE). However, in vitro allergen test results were interpreted dichotomically as positive or negative at a threshold of 0.35 kU/L of sIgE, regardless of the patient characteristics or antigen types.

OBJECTIVE:

The purpose of this study was to determine the cutoff value for sIgE in house-dust mites and animal dander, and to analyze differences in cutoff value according to age and gender.

METHODS:

A total of 16,209 patients with more than one allergic rhinitis symptom who underwent both SPT and serum sIgE testing were retrospectively evaluated between March 2008 and May 2012. There were 9374 male (57.8%) and 6835 female (42.2%) patients. The mean age was 31.8 years (range, 2-89 years). The criterion standard for allergen sensitization was defined as a wheal of >3 mm or an allergen-to-histamine ratio of ≥1 in SPT results. The Youden index was used to calculate the cutoff value of sIgE.

RESULTS:

Cutoff values of sIgE for Dermatophagoides pteronyssinus, Dermatophagoides farinae, cat, and dog were 0.69, 1.16, 0.13, and 0.45 kU/L, respectively. The cutoff value of sIgE changed according to age for D. pteronyssinus and D. farinae but not for cat and dog allergens. When categorizing according to age group, the cutoff values of sIgE for D. pteronyssinus and D. farinae had a tendency to decrease with age. There was no significant difference in cutoff value according to gender.

CONCLUSION:

The cutoff value for sIgE differed for each antigen and changed with age. Physicians should select the proper cutoff value for sIgE for appropriate criteria according to antigen and patient age rather than using a uniform cutoff value.
Keimyung Author(s)(Kor)
정종인
Publisher
School of Medicine (의과대학)
Citation
Sang Duk Hong et al. (2018). Optimal cutoff values of allergen-specific immunoglobulin E to house dust mites and animal dander based on skin-prick test results: Analysis in 16,209 patients with allergic rhinitis. American Journal of Rhinology & Allergy, 32(1), 23–26. doi: 10.2500/ajra.2018.32.4483
Type
Article
ISSN
1945-8924
Source
https://journals.sagepub.com/doi/10.2500/ajra.2018.32.4483
DOI
10.2500/ajra.2018.32.4483
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/41371
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학)
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