Kajita N, Kusakawa G, Seto H, Hirao K, Yokoyama S, Morikawa E, Morita K, Narita M, Yoshida K. Lymphocyte stimulation test for diagnosing hen's egg yolk-induced enterocolitis syndrome.
THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. GLOBAL 2023;
2:100138. [PMID:
37781670 PMCID:
PMC10509954 DOI:
10.1016/j.jacig.2023.100138]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 04/25/2023] [Accepted: 05/17/2023] [Indexed: 10/03/2023]
Abstract
Background
There is currently little research into factors predicting the results of an initial diagnostic oral food challenge (OFC) test for food protein-induced enterocolitis syndrome (FPIES).
Objective
The present study aimed to identify predictors of the diagnosis of hen's egg yolk-induced FPIES (HEY-FPIES).
Methods
The present monocentric study was performed at Tokyo Metropolitan Children's Medical Center and included patients who underwent hen's egg yolk OFC (HEY-OFC) between March 2018 and March 2023 to assess for HEY-FPIES. The baseline characteristics of the groups and HEY-OFC positivity or negativity were then compared. Univariate analysis was conducted by using the Mann-Whitney U test or Fisher exact test. Receiver operator characteristic analysis was used to create probability curves.
Results
In total, 35 patients were analyzed; of these, 17 were HEY-OFC-positive. No significant difference was observed between the HEY-OFC-positive and HEY-OFC-negative groups in terms of background factors except for the HEY-LST value, which was significantly higher in the HEY-LST group (P = .027). Receiver operator characteristic analysis demonstrated that the area under the curve for HEY-OFC positivity using the HEY-LST value was 0.719 (95% CI = 0.541-0.897). The statistically optimal cutoff value for the HEY-LST was 610%, which had a clinical sensitivity and specificity of 64.7% and 83.3%, respectively.
Conclusions
The present study demonstrated that the HEY-LST may be a useful predictor of the result of an initial OFC for HEY-FPIES.
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