Effectiveness of Carboplatin-Prescreening Intradermal Skin Tests to Reduce Unanticipated Immediate Hypersensitivity Reactions: A Comparative Study
JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE(2024)
Abstract
BACKGROUND: Carboplatin administration poses a risk of immediate hypersensitivity reactions (IHRs) that tend to increase with repeated administration and are mostly IgEmediated. OBJECTIVE: This study evaluated the usefulness of carboplatinprescreening intradermal skin tests (IDTs). METHODS: Carboplatin-prescreening IDTs were routinely conducted in patients with a history of receiving six or more carboplatin cycles beginning in January 2021. The primary objective was to assess disparities in the incidence of unanticipated IHRs to carboplatin administration. We compared patients in the intervention group (from 2021 to 2022) and those who did not undergo prescreening IDTs under the same conditions (preintervention group, from 2019 to 2020). Secondary objectives included evaluating the sensitivity and speci fi city of the prescreening IDT and the incidence of carboplatin IHR according to the number of infusion cycles. RESULTS: The intervention group was composed of 67 patients who were administered 347 carboplatin cycles whereas the preintervention group included 96 patients who were administered 464 carboplatin cycles. The risk of unanticipated carboplatin IHRs decreased by 83.2% in the intervention group compared with results in the preintervention group (preintervention group, 3.45%, n = 16 vs intervention group, 0.58%, n = 2; P = .005). The prescreening IDT showed a sensitivity and speci fi city of 77.78% and 99.41%, respectively. The risk of newly developed IHRs based on the number of carboplatin cycles was less than 1% (cycles 1-5), 2.11% (cycle 6), 3.90% (cycles 7-12), 2.90% (cycles 13-18), and 0.74% (cycles 19 and greater), respectively. CONCLUSIONS: Initiating carboplatin-prescreening IDTs from the seventh cycle on signi fi cantly reduced the risk of unanticipated IHRs. (c) 2023 American Academy of Allergy, Asthma & Immunology (J Allergy Clin Immunol Pract 2024;12:998-1005)
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Key words
Intradermal skin test,Prescreening,Carboplatin,Drug hypersensitivity,Incidence
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