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Diagnostic precision of component-resolved vs. extract-based in vitro diagnosis of hymenoptera venom allergy: effects on clinical management

Diagnostic precision of component-resolved vs. extract-based in vitro diagnosis of hymenoptera venom allergy: effects on clinical management

Journal der Deutschen Dermatologischen Gesellschaft 15(5): 507-515

The measurement of specific IgE (sIgE) antibodies plays a key role in the diagnosis of honeybee and wasp venom allergy. In recent years, component-resolved diagnosis (CRD) has been introduced, which allows for the measurement of sIgE antibodies against Api m 1, Ves v 1, Ves v 5, and Pol d 5, as well as cross-reactive carbohydrate determinants (CCDs). These tests are intended to help determine the clinical relevance of any given sensitization, especially in patients with dual sensitization. Specific IgE antibody levels were measured in 143 patients with bee and/or wasp venom allergy using the extract-based ImmunoCAP® allergens i1 and i3 as well as the ImmunoCAP® allergen components i208-211 and O214 (Api m 1, Ves v 1, Ves v 5, Pol d 5, CCDs). In patients with dual sensitization, inhibition testing was also performed. In a subgroup of the study population, sIgE to Api m 1, Api m 4, Pol d 5, and Ves v 5 were determined using the ISAC® allergy microarray (n = 44). The sensitivity of Ves v 5 in patients with isolated wasp venom allergy was 78.5 %; in combination with Ves v 1, that figure increased to 92.3 %. The sensitivity of Api m 1 in individuals with isolated bee venom allergy was 25 %. CRD and inhibition testing in individuals with dual sensitization showed divergent results. CRD using the ISAC® allergy microarray showed marked differences, especially with regard to Api m 1 and CCDs. Component-resolved tests are a valuable addition to the diagnostic spectrum as long as they are used in combination with established procedures. Apart from Ves v 5, measuring IgE antibodies to Ves v 1 should always be included in the diagnostic workup.

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Accession: 059604789

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PMID: 28485877

DOI: 10.1111/ddg.13240

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