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Strassen U, Bas M, Wirth M, Wirth M, Gröger M, Stelter K, Volkenstein S, Kehl V, Kojda G, Hoffmann TK, Hahn J, Trainotti S, Greve J. Efficacy of human C1 esterase inhibitor concentrate for treatment of ACE-inhibitor induced angioedema. Am J Emerg Med 2023; 64:121-128. [PMID: 36516670 DOI: 10.1016/j.ajem.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/21/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND ACE inhibitor (ACEi) induced angioedema predominantly affects the upper aerodigestive tract. As ACEi induced angioedema is mediated by bradykinin, therapeutic response to antihistamines and glucocorticoids remains unsatisfactory. In bradykinin mediated hereditary angioedema, C1-esterase inhibitor (C1INH) is an effective and approved treatment since many years. Our aim was to evaluate the therapeutic effect of C1INH in ACEi induced angioedema. METHODS We performed a double-blind, parallel-group, multicentre randomised placebo-controlled trial between December 2013 and September 2018. Eligible were adults with ACEi induced angioedema with airway obstruction. Participants were randomised 1:1 to single doses of either C1INH (20 IU/kg) or placebo (0.9% NaCl) i.v in addition to standard care (i.v. 500 mg prednisolone and 2.68 mg clemastine) i.v. Composite symptom scores were assessed at baseline and up to 48 h, at discharge and 1 week after discharge. Physician assessed time to complete oedema resolution (TCER) and time to onset of relief (TOR). RESULTS 30 patients (16 C1INH, 14 placebo) were randomised and dosed. 25 (9 C1INH, 12 placebo) completed the study. TCER was 29.63 h ± 15.56 h in the C1INH and 17.29 h ± 10.40 h in the placebo arm (p = 0.0457). TORs were 4.13 h ± 3.38 h and 2.86 h ± 1.29 h for C1INH and placebo, respectively (p = 0.4443). There were no adverse events related to study medication. CONCLUSIONS In the context of baseline application of steroids and antihistamines C1INH was inferior in the treatment of ACEi induced angioedema when compared to placebo with respect to time to complete resolution of symptoms. Eudra-CT Number: 2012-001670-28.
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Affiliation(s)
- Ulrich Strassen
- Department of Otorhinolaryngology, Klinikum rechts der Isar, Technische Universität München, Germany.
| | - Murat Bas
- Department of Otorhinolaryngology, Klinikum rechts der Isar, Technische Universität München, Germany
| | - Magdalena Wirth
- Department of Otorhinolaryngology, Klinikum rechts der Isar, Technische Universität München, Germany
| | - Markus Wirth
- Department of Otorhinolaryngology, Klinikum rechts der Isar, Technische Universität München, Germany
| | - Moritz Gröger
- Department of Otorhinolaryngology, Grosshadern Medical Center of the University of Munich, Germany
| | - Klaus Stelter
- Department of Otorhinolaryngology, Grosshadern Medical Center of the University of Munich, Germany
| | - Stefan Volkenstein
- Department of Otorhinolaryngology, Ruhr-University of Bochum, St. Elisabeth-Hospital Bochum, Germany
| | - Victoria Kehl
- Munich Study Center, Faculty of Medicine, Technical University Munich, Germany; Institute for AI and Informatics in Medicine, Faculty of Medicine, Technical University Munich, Germany
| | - Georg Kojda
- Institute of Pharmacology and Clinical Pharmacology, University Hospital Düsseldorf, Düsseldorf (G.K.), Germany
| | - Thomas K Hoffmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University, Medical Center, Ulm, Germany
| | - Janina Hahn
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University, Medical Center, Ulm, Germany
| | - Susanne Trainotti
- Department of Otorhinolaryngology, Klinikum rechts der Isar, Technische Universität München, Germany; Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University, Medical Center, Ulm, Germany
| | - Jens Greve
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University, Medical Center, Ulm, Germany
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