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IgE antibodies and skin tests in immediate hypersensitivity reactions to infliximab in inflammatory bowel disease

Abstract : Infliximab (IFX) is used for the treatment of inflammatory bowel diseases (IBD). Immediate hypersensitivity reactions (HR) to IFX are frequently reported.ObjectivesWe investigated immunoglobulin E (IgE)-mediated mechanisms underlying immediate HR to IFX. We also evaluated the clinical utility of allergological tests as well as the tolerability of IFX retreatment in these patients.MethodsThis was a prospective single-center study including IBD patients with previous immediate HR to IFX. Skin tests to IFX, including prick tests and intradermal tests, and measurement of anti-IFX IgE antibodies were performed at least 4 weeks after HR. In case of negative skin tests and absence of IgE antibodies, readministration of IFX was performed with a twice-reduced infusion rate. In case of positive tests or recurrence of HR during readministration of IFX, a 12-step desensitization or induction of tolerance protocol was proposed.ResultsA total of 24 IBD patients were included (Crohn's disease: n=20). Prick tests to IFX were all negative. Intradermal test was positive in one patient. Anti-IFX IgE antibodies were not detected in 21 patients and were detected in three patients (significant level in one patient and intermediate level in two patients). No relationship was observed between positive skin tests and the presence of anti-IFX IgE antibodies. Switch to adalimumab was well tolerated in 10/11 patients. The readministration of IFX was well tolerated in 4/11 patients. Desensitization to IFX was successful in three out of four patients.ConclusionThe vast majority of immediate HR to IFX is not IgE-mediated. Allergological tests are of poor clinical utility. Desensitization or induction of tolerance protocol may allow continuation of IFX therapy in IBD patients with a history of immediate HR.
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https://hal.univ-lorraine.fr/hal-01679999
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Submitted on : Wednesday, January 10, 2018 - 12:35:08 PM
Last modification on : Sunday, October 25, 2020 - 7:05:53 AM

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Estelle Fréling, Laurent Peyrin-Biroulet, Claire Poreaux, Alain Morali, Julie Waton, et al.. IgE antibodies and skin tests in immediate hypersensitivity reactions to infliximab in inflammatory bowel disease. European Journal of Gastroenterology and Hepatology, Lippincott, Williams & Wilkins, 2015, 27 (10), pp.1200 - 1208. ⟨10.1097/MEG.0000000000000436⟩. ⟨hal-01679999⟩

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