The utility of casein skin prick test and IgE values in predicting anaphylaxis and reactivity to baked milk


Cogurlu M. T., Uluc N. N., Ozanli I., Ozkan Y. E., Iskender N., Balci S., ...Daha Fazla

ANNALS OF ALLERGY ASTHMA & IMMUNOLOGY, cilt.134, sa.6, 2025 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 134 Sayı: 6
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.anai.2025.03.020
  • Dergi Adı: ANNALS OF ALLERGY ASTHMA & IMMUNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, CINAHL, EMBASE, Food Science & Technology Abstracts, MEDLINE, Veterinary Science Database
  • Kocaeli Üniversitesi Adresli: Evet

Özet

Background: Most children with milk allergy can tolerate baked milk (BM); however, a small percent still react to it. Identifying indicators that might forecast potential reactions to baked goods is essential. Objective: To determine the predictive factors and some decision points for estimation of BM reactivity and severe reactions. Methods: A cross-sectional study was performed. Participants who were reactive to unheated milk underwent an oral food challenge with BM. The reactive group was classified into anaphylactic and non-anaphylactic reaction categories. The IgE and skin prick test (SPT) levels of milk and its components were compared among these groups. Results: The study was conducted with 110 patients. The median age of participants was 16 (IQR: 12-31) months. BM reactivity was observed in 41% (n = 46/110) of the patients. The optimal cutoff point for BM reactivity was 4.68 kIU/L for casein specific IgE (sIgE) (84% specificity, 75% sensitivity, area under the curve [AUC]: 0.827) and 7 mm for casein SPT (87.2% specificity, 51.1% sensitivity, AUC: 0.721) (P < .001, P < .001). The positive decision point for anaphylaxis for casein sIgE was 34 kIU/L (95% specificity, 47.6% sensitivity, AUC: 0.707). In the group younger than 24 months old, the cutoff values for casein sIgE were found to be 5.4 kIU/L (95% specificity, 66.6% sensitivity, AUC: 0.844) and casein SPT at 7 mm (91% specificity, 37% sensitivity, AUC: 0.708) (P < .001, P = .002). Conclusion: Our investigation revealed that the most accurate indicator for BM reactivity was casein sIgE and SPT. Although we established a threshold for severe reaction with BM in our study population, we consider that our findings require validation before therapeutic implementation. (c) 2025 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights are reserved,