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학술저널
저자정보
Al Hawi Yasmeen (Allergy Center and Institute for Clinical Research National Hospital Organization Mie National Hosp) Nagao Mizuho (Allergy Center and Institute for Clinical Research National Hospital Organization Mie National Hosp) Furuya Kanae (Allergy Center and Institute for Clinical Research National Hospital Organization Mie National Hosp) Sato Yasunori (Department of Preventive Medicine and Public Health Keio University School of Medicine Tokyo Japan.) Ito Setsuko (Department of Food Science and Nutrition Faculty of Human Life and Science Doshisha Women's College) Hori Hiroki (Department of Pediatrics Mie University Graduate School of Medicine Tsu Japan.) Hirayama Masahiro (Department of Pediatrics Mie University Graduate School of Medicine Tsu Japan.) Fujisawa Takao (Allergy Center and Institute for Clinical Research National Hospital Organization Mie National Hosp)
저널정보
대한천식알레르기학회(구 대한알레르기학회) Allergy, Asthma & Immunology Research Allergy, Asthma & Immunology Research Vol.13 No.1
발행연도
2021.1
수록면
141 - 153 (13page)

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Purpose: ImmunoCAP® (ImmunoCAP) and IMMULITE® 2000 3gAllergy™ (3gAllergy) systems are major quantitative allergen-specific immunoglobulin E (sIgE) assay methods. Due to the heterogeneous nature of allergenic extracts and differences in the assay format, quantitation of allergen-sIgEs is not expected to correlate well between different methods. However, we have recently reported good agreement between the methods in the diagnosis of egg allergy. This study aimed to determine and correlate the predictive values of sIgE by the two systems in the diagnosis of milk and wheat allergies. Methods: Children who had undergone oral food challenge (OFC) for the diagnosis of milk and wheat allergies were enrolled. The OFCs were performed to diagnose either true allergy in the 1-year-old group (A) or tolerance in the 2- to 6-year-old group (B). Milk, casein and β-lactoglobulin, and wheat and ω-5 gliadin sIgE values were measured using the 2 systems. The predictive accuracy of each sIgE for the OFC outcome was assessed using receiver operating characteristic (ROC) curves. The probability of a positive OFC outcome was estimated by logistic regression analysis. Results: A total of 395 patients were recruited from 7 primary care clinics and 19 hospitals in Japan. Milk and wheat OFCs were performed for 87 and 102 group A patients, and 124 and 82 group B patients, respectively. ROC analysis yielded similar areas under the curve for the 2 assays (0.7–0.9). The log-transformed sIgE data showed a strong linear correlation with the estimated probabilities (R > 0.9). Conclusions: The 2 systems may be interchangeable for diagnosis of milk and wheat allergies in young children.

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