RT Journal Article T1 β-blockers and ACE inhibitors are not a risk factor for severe systemic sting reactions and adverse events during venom immunotherapy. A1 Sturm, Gunter Johannes A1 Herzog, Sereina Annik A1 Aberer, Werner A1 Alfaya Arias, Teresa A1 Antolin-Amerigo, Dario A1 Bonadonna, Patrizia A1 Boni, Elisa A1 Bożek, Andrzej A1 Chełmińska, Marta A1 Ernst, Barbara A1 Frelih, Nina A1 Gawlik, Radoslaw A1 Gelincik, Asli A1 Hawranek, Thomas A1 Hoetzenecker, Wolfram A1 Jimenez Blanco, Aranzazu A1 Kita, Karolina A1 Kendirlinan, Reşat A1 Košnik, Mitja A1 Laipold, Karin A1 Lang, Roland A1 Marchi, Francesco A1 Mauro, Marina A1 Nittner-Marszalska, Marita A1 Poziomkowska-Gęsicka, Iwona A1 Pravettoni, Valerio A1 Preziosi, Donatella A1 Quercia, Oliviero A1 Reider, Norbert A1 Rosiek-Biegus, Marta A1 Ruiz-Leon, Berta A1 Schrautzer, Christoph A1 Serrano, Pilar A1 Sin, Aytül A1 Sin, Betül Ayşe A1 Stoevesandt, Johanna A1 Trautmann, Axel A1 Vachova, Martina A1 Arzt-Gradwohl, Lisa K1 ACE inhibitor K1 Adverse event K1 Beta-blocker K1 Systemic insect sting reaction K1 Venom immunotherapy AB There is controversy whether taking β-blockers or ACE inhibitors (ACEI) is a risk factor for more severe systemic insect sting reactions (SSR) and whether it increases the number or severity of adverse events (AE) during venom immunotherapy (VIT). In this open, prospective, observational, multicenter trial, we recruited patients with a history of a SSR and indication for VIT. The primary objective of this study was to evaluate whether patients taking β-blockers or ACEI show more systemic AE during VIT compared to patients without such treatment. In total, 1,425 patients were enrolled and VIT was performed in 1,342 patients. Of all patients included, 388 (27.2%) took antihypertensive (AHT) drugs (10.4% took β-blockers, 11.9% ACEI, 5.0% β-blockers and ACEI). Only 5.6% of patients under AHT treatment experienced systemic AE during VIT as compared with 7.4% of patients without these drugs (OR: 0.74, 95% CI: 0.43-1.22, p = 0.25). The severity of the initial sting reaction was not affected by the intake of β-blockers or ACEI (OR: 1.14, 95% CI: 0.89-1.46, p = 0.29). In total, 210 (17.7%) patients were re-stung during VIT and 191 (91.0%) tolerated the sting without systemic symptoms. Of the 19 patients with VIT treatment failure, 4 took β-blockers, none an ACEI. This trial provides robust evidence that taking β-blockers or ACEI does neither increase the frequency of systemic AE during VIT nor aggravate SSR. Moreover, results suggest that these drugs do not impair effectiveness of VIT. PB Wiley YR 2021 FD 2021-01-20 LK http://hdl.handle.net/10668/17198 UL http://hdl.handle.net/10668/17198 LA en NO Sturm GJ, Herzog SA, Aberer W, Alfaya Arias T, Antolín-Amérigo D, Bonadonna P, et al. β-blockers and ACE inhibitors are not a risk factor for severe systemic sting reactions and adverse events during venom immunotherapy. Allergy. 2021 Jul;76(7):2166-2176 DS RISalud RD Apr 7, 2025