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Specific IgE Decision Point Cutoffs in Children with IgE-Mediated Wheat Allergy and a Review of the Literature.
International Archives of Allergy and Immunology ( IF 2.5 ) Pub Date : 2020-02-18 , DOI: 10.1159/000505728
François Graham 1, 2 , Jean Christoph Caubet 3 , Salim Ramadan 3 , David Spoerl 4, 5 , Philippe A Eigenmann 3
Affiliation  

BACKGROUND Wheat IgE-mediated food allergy in children is one of the most frequent food allergies in westernized countries, affecting between 0.4 and 1% of children. Although 95% predictive decision points have been determined for major allergens such as peanut, egg, and milk, the diagnostic performances of wheat-specific IgE (sIgE) and wheat component testing are not well established. OBJECTIVES The aim of this study was to determine sIgE decision point cutoffs in children with IgE-mediated wheat allergy and provide a review of the literature. METHOD A retrospective review of wheat oral food challenges was performed at the pediatric allergy unit of the University Hospitals of Geneva between 2004 and 2019. Performance characteristics for wheat and ω-5 gliadin sIgE were calculated and positive and negative OFC data were compared using the Mann-Whitney U test. RESULTS A wheat sIgE cutoff of 2.88 kUA/L had a sensitivity of 95% (negative decision point), whereas a cutoff of 78.1 kUA/L had a specificity of 95% (positive decision point). When giving equal weight to sensitivity and specificity, the optimal cutoff point for wheat sIgE was 12 kUA/L, which gave a specificity of 70% and a sensitivity of 66.67%. CONCLUSIONS These findings suggest a high positive decision point for wheat sIgE (78.1 kUA/L). This reinforces the importance of considering OFC in children with IgE-mediated wheat allergy to confirm diagnosis even in patients with relatively high wheat sIgE values, as there is a risk of falsely mislabeling these patients as allergic.

中文翻译:

IgE介导的小麦过敏儿童的特定IgE决策点临界值和文献综述。

背景技术小麦IgE介导的儿童食物过敏是西方国家最常见的食物过敏之一,影响0.4-1%的儿童。尽管已经为诸如花生,鸡蛋和牛奶等主要变应原确定了95%的预测决策点,但小麦特异性IgE(sIgE)和小麦成分测试的诊断性能尚未得到很好的确定。目的本研究的目的是确定IgE介导的小麦过敏儿童的sIgE决定点截止值,并提供文献综述。方法在2004年至2019年之间,在日内瓦大学医院的儿科过敏科对小麦口服食物的挑战进行了回顾性审查。计算了小麦和ω-5麦醇溶蛋白sIgE的性能特征,并使用Mann-Whitney U检验比较了OFC的阳性和阴性数据。结果小麦sIgE临界值为2.88 kUA / L,灵敏度为95%(负决定点),而临界值为78.1 kUA / L,特异性为95%(正决定点)。当给予均等的敏感性和特异性时,小麦sIgE的最佳临界点为12 kUA / L,特异性为70%,敏感性为66.67%。结论这些发现暗示了小麦sIgE的高阳性决策点(78.1 kUA / L)。这就增强了在患有IgE介导的小麦过敏的儿童中考虑OFC以确认诊断的重要性,即使在小麦sIgE值相对较高的患者中也是如此,因为存在将这些患者错误地标记为过敏的风险。结果小麦sIgE临界值为2.88 kUA / L,灵敏度为95%(负判定点),而临界值为78.1 kUA / L,特异性为95%(正判定点)。当给予均等的灵敏度和特异性时,小麦sIgE的最佳临界点为12 kUA / L,特异性为70%,灵敏度为66.67%。结论这些发现暗示了小麦sIgE的高阳性决策点(78.1 kUA / L)。这加强了在IgE介导的小麦过敏儿童中考虑OFC来确认诊断的重要性,即使在小麦sIgE值相对较高的患者中也是如此,因为存在将这些患者错误地标记为过敏的风险。结果小麦sIgE临界值为2.88 kUA / L,灵敏度为95%(负决定点),而临界值为78.1 kUA / L,特异性为95%(正决定点)。当给予均等的敏感性和特异性时,小麦sIgE的最佳临界点为12 kUA / L,特异性为70%,敏感性为66.67%。结论这些发现暗示了小麦sIgE的高阳性决策点(78.1 kUA / L)。这加强了在IgE介导的小麦过敏儿童中考虑OFC来确认诊断的重要性,即使在小麦sIgE值相对较高的患者中也是如此,因为存在将这些患者错误地标记为过敏的风险。1 kUA / L的特异性为95%(阳性判定点)。当给予均等的敏感性和特异性时,小麦sIgE的最佳临界点为12 kUA / L,特异性为70%,敏感性为66.67%。结论这些发现表明小麦sIgE(78.1 kUA / L)具有较高的积极决策点。这加强了在IgE介导的小麦过敏儿童中考虑OFC来确认诊断的重要性,即使在小麦sIgE值相对较高的患者中也是如此,因为存在将这些患者错误地标记为过敏的风险。1 kUA / L的特异性为95%(阳性判定点)。当给予均等的敏感性和特异性时,小麦sIgE的最佳临界点为12 kUA / L,特异性为70%,敏感性为66.67%。结论这些发现暗示了小麦sIgE的高阳性决策点(78.1 kUA / L)。这加强了在IgE介导的小麦过敏儿童中考虑OFC来确认诊断的重要性,即使在小麦sIgE值相对较高的患者中也是如此,因为存在将这些患者错误地标记为过敏的风险。
更新日期:2020-02-18
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