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Exploring cytokine outputs for ex vivo diagnostics in drug reaction with eosinophilia and systemic symptoms (DRESS)
Journal article   Open access   Peer reviewed

Exploring cytokine outputs for ex vivo diagnostics in drug reaction with eosinophilia and systemic symptoms (DRESS)

Ana M. Copaescu, Effie Mouhtouris, Fiona James, Michelle S.Y. Goh, Elizabeth J. Phillips, Jason A. Trubiano and for Australasian Registry of Severe Cutaneous Adverse Reactions (AUS-SCAR)
The World Allergy Organization journal, Vol.17(12), 101002
2024
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CC BY-NC-ND V4.0 Open Access

Abstract

Antibiotic hypersensitivity Drug reaction with eosinophilia and systemic symptoms Enzyme-linked immunoSpot Interferon-gamma T-Lymphocytes
Background In an exploratory study to assess the potential to individualize T-cell diagnostics in antibiotic-associated severe T-cell mediated hypersensitivity, we focused on drug reaction with eosinophilia and systemic symptoms (DRESS) and the related cytokine outputs IL-4 and IL-5. Methods Patients with well-phenotyped RegiSCAR ≥4 DRESS, positive intradermal skin testing, and a previous negative IFN-γ Enzyme-Linked ImmunoSpot (ELISpot) assay were prospectively recruited. We specifically performed an ELISpot assay with IL-4 and IL-5 cytokine outputs. As comparative controls, these cytokine outputs were performed simultaneously in patients with a positive ex vivo IFN-γ release ELISpot result. Results Four antibiotic-associated DRESS cases were included. The IL-4 and IL-5 output ELISpot assay demonstrated various results among these patients, with at least 1 cytokine present in all the cases. As for the 2 controls with known positive IFN-γ release, compared to the IFN-γ secretion, the cytokine output using IL-4 and IL-5 showed an increased positivity. Conclusion In patients where the early response has suggested a TH2 response such as DRESS, IL-4 and IL-5 cytokine outputs could present an investigational advantage, including when IFN-γ is negative. In the future, larger prospective studies are required to understand the role of varied cytokine outputs in T-cell-mediated hypersensitivities.

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