• Ann. Allergy Asthma Immunol. · Dec 2019

    The cost-effectiveness of requiring universal vs contextual self-injectable epinephrine autoinjector for allergen immunotherapy.

    • Di Sun, Joseph Cafone, Marcus Shaker, and Matthew Greenhawt.
    • Division of Allergy and Immunology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
    • Ann. Allergy Asthma Immunol. 2019 Dec 1; 123 (6): 582-589.

    BackgroundAeroallergen immunotherapy (AIT) is a safe and effective disease-modifying treatment associated with rare therapy-associated fatality. Significant practice variation surrounds universal or contextual prescription of self-injectable epinephrine (SIE) for patients receiving AIT.ObjectiveTo characterize the cost-effectiveness of a universal vs contextual SIE requirement for patients receiving AIT.MethodsAn economic evaluation using cohort and microsimulation was performed from both the societal and health care sector perspectives for patients undergoing AIT, assessing a universal requirement to fill SIE prescriptions at the outset of therapy compared with requiring this only after a systemic reaction to immunotherapy (SRIT).ResultsA universal SIE requirement for AIT is not cost-effective, with the incremental cost-effectiveness ratio for this strategy estimated at $669,327,730 per quality-adjusted life-year (QALY). In the microsimulation (n = 10,000), the mean (SD) costs of a universal approach exceeded that of a more context-specific strategy where SIE was only prescribed for patients after an initial SRIT ($19,653.36 [$4296.66] vs $16,232.14 [$5204.32]), and given the effects on rates of AIT discontinuation, the universal approach was less effective (mean [SD], 25.555 [2.285] QALYs) compared with a contextualized approach (mean [SD], 25.579 [2.345] QALYs). Universal SIE prescription could be cost-effective if it provided a 1000 times protection against AIT fatality at a value-based cost of $24, and the annual AIT fatality rates unrealistically exceed 2.6 per 10,000 patients.ConclusionIn a simulation of potential SIE-prescribing strategies for patients receiving AIT, a universal approach to an epinephrine autoinjector requirement was not cost-effective when compared with an approach in which an SIE is prescribed only to patients with prior SRIT.Copyright © 2019 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.

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