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Performance of the PROTIA™ Allergy-Q® System in the Detection of Allergen-specific IgE: A Comparison With the ImmunoCAP® System

Authors
 Jae-Hyun Lee  ;  Hye Jung Park  ;  Kyung Hee Park  ;  Kyoung Yong Jeong  ;  Jung-Won Park 
Citation
 Allergy Asthma & Immunology Research, Vol.7(6) : 565-572, 2015 
Journal Title
 Allergy Asthma & Immunology Research 
ISSN
 2092-7355 
Issue Date
2015
Keywords
Allergen ; Allergy-Q® ; ImmunoCAP® ; allergic disease ; detection performance ; specific IgE
Abstract
PURPOSE: The PROTIA™ Allergy-Q® enzyme immunoassay (EIA) is a recently developed screening assay for specific immunoglobulin E (sIgE) for multiple allergens. The ImmunoCAP® fluorescent EIA (FEIA) system is the most widely used method for sIgE detection. In this study, we evaluated the performance of the Allergy-Q® system compared to the ImmunoCAP® system. METHODS: We compared the 2 systems using sera from 260 Korean allergy patients suffering from asthma (26.5%), allergic rhinitis (42.3%), atopic dermatitis (67.7%), and food allergy (18.1%). We compared sIgE-measurement results for 7 inhalant allergens, 5 food allergens, and 4 microorganism allergens. RESULTS: Overall, 1,799 paired assay results were analyzed. Except mugwort and alternaria, most of the allergen-sIgE results showed intra-class correlation coefficients of >0.5. Inter-assay class associations were reliable for most allergens (gamma=0.858-0.987, P<0.001). Passing-Bablok regression analysis showed multiple differences in intercept and slope. The inter-method concordance was moderate to substantial for most allergens (κ=0.713-0.898, P<0.001). CONCLUSIONS: The PROTIA™ Allergy-Q® EIA system exhibited good detection performance compared to the ImmunoCAP® FEIA system in Korean allergic patients. However, because of methodological differences between the 2 assays, careful clinical implication is required for the interpretation of Allergy-Q® EIA results.
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DOI
10.4168/aair.2015.7.6.565
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Thoracic and Cardiovascular Surgery (흉부외과학교실) > 1. Journal Papers
Yonsei Authors
박경희(Park, Kyung Hee) ORCID logo https://orcid.org/0000-0003-3605-5364
박중원(Park, Jung Won) ORCID logo https://orcid.org/0000-0003-0249-8749
박혜정(Park, Hye Jung) ORCID logo https://orcid.org/0000-0002-1862-1003
이재현(Lee, Jae Hyun) ORCID logo https://orcid.org/0000-0002-0760-0071
정경용(Jeong, Kyoung Yong) ORCID logo https://orcid.org/0000-0001-9887-1426
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/157183
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