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  • Title: Rapid desensitization to antineoplastic drugs in an outpatient immunoallergology clinic: Outcomes and risk factors.
    Author: Caiado J, Brás R, Paulino M, Costa L, Castells M.
    Journal: Ann Allergy Asthma Immunol; 2020 Sep; 125(3):325-333.e1. PubMed ID: 32353405.
    Abstract:
    BACKGROUND: Hypersensitivity reactions to antineoplastic agents may lead to discontinuation of first-line treatments. Rapid drug desensitization (RDD) allows for a safe reintroduction in patients who are allergic to them. OBJECTIVE: To evaluate the safety and efficacy of the Brigham and Women's Hospital's 12-step RDD in a Portuguese patient population with cancer and to identify markers associated with breakthrough reactions (BTRs) to platins. METHODS: We conducted a retrospective review of desensitizations undertaken at the Immunoallergology Day-Care Unit of the Santa Maria Hospital in Lisbon, Portugal, from July 2008 to July 2019. Adult patients with cancer and with immediate hypersensitivity reactions were included. Skin testing was performed to platins, trastuzumab, and cetuximab. The 12-step protocol was used for most patients, and a shorter protocol was used in 9 patients who were taxane-reactive to resume regular infusions. RESULTS: A total of 1471 RDDs were performed in 272 patients to 136 platins, 124 taxanes, 13 monoclonal antibodies, and 10 other drugs. Skin test results were positive in 127 of patients who were platin-reactive (95.3%) and negative in patients who were cetuximab- and trastuzumab-reactive. There were 141 BTRs during RDD (9.6% of infusions), 79.4% induced by platins with the majority having mild reactions (68.8%). There were 8 patients who were paclitaxel-reactive, and who completed a shorter protocol and resumed regular infusions successfully. Multiple platin infusions (cutoff: ≥10) and total immunoglobulin E greater than or equal to 100 U/mL were identified as independent risk factors for BTRs in patients who were platin-reactive. CONCLUSION: This large single-center study confirmed the safety and efficacy of the 12-step RDD protocol in a diverse cancer population, providing evidence of its universal applications. Total immunoglobulin E is a potentially useful biomarker to identify high-risk patients who are platin-reactive.
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