Hereditary angioedema (HAE) is defined as a rare genetic disease with recurrent episodes of localized bradykinin-mediated swelling of the deep tissues of the skin, respiratory, and gastrointestinal tracts that can be life threatening. Classification of HAE has evolved over time with our further understanding of clinical phenotypes, underlying causes, and available testing. In most cases, HAE is caused by a deficiency of C1-esterase inhibitor (C1-INH) on the Serpin Family G Member 1 (SERPING1) gene, either through decreased amounts of C1-INH protein (C1-INH-HAE, type 1) or decreased function of C1-INH (C1-INH-HAE, type 2). HAE with normal C1-INH levels and function are divided into unknown cause or into non-C1-INH-HAE forms, which include known mutational defects in factor XII (called FXII-HAE in the Hereditary Angioedema International Working Group consensus), angiopoietin-1, plasminogen, and kininogen 1 genes. It is possible that, after an initial workup, a patient without a family history of HAE could be classified with an acquired form of angioedema (nonhereditary) that may later prove to be HAE due to a de-novo SERPING1 mutation. Because there are forms of nonhistaminergic (H-antihistamine unresponsive) angioedema that appear clinically very similar to HAE, it is essential that the patient undergoes a thorough clinical history and diagnostic evaluation to ensure that he or she is properly diagnosed and classified.
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http://dx.doi.org/10.2500/aap.2020.41.200040 | DOI Listing |
Rev Alerg Mex
December 2024
Médica general, Facultad de Ciencias de la Salud, Universidad Militar Nueva Granada, Hospital Universitario Mayor Méderi, Colombia.
Allergy Asthma Proc
January 2025
From the Division of Allergy and Immunology, Department of Medicine, University of California San Diego, La Jolla, California and.
Idiopathic non-mast cell angioedema (INMA) is a rare disease typified by recurrent attacks of cutaneous and subcutaneous swelling. Every attack carries the potential for severe morbidity and, in the case of laryngeal involvement, mortality. Whereas therapies approved for hereditary angioedema (HAE) have been used in the care of patients with INMA, little is known with regard to their efficacy for the treatment of this disease.
View Article and Find Full Text PDFCureus
November 2024
Department of Pediatrics, Mahatma Gandhi Mission (MGM) Medical College and Hospital, Aurangabad, IND.
Background Hereditary angioedema (HAE) is a rare disorder in India, and while prevalence data is limited, it is believed that a significant number of individuals may be affected. Due to restricted access to first-line treatments, older therapies like danazol are commonly used despite associated risks in resource-constrained settings. This study aimed to assess the efficacy of danazol as an affordable long-term prophylaxis (LTP) for HAE in a three-generation family.
View Article and Find Full Text PDFJ Allergy Clin Immunol Pract
December 2024
Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium. Electronic address:
J Allergy Clin Immunol
December 2024
University of Cincinnati, College of Medicine, Cincinnati, Ohio, USA. Electronic address:
Over the past two decades, guidelines for the on-demand treatment of hereditary angioedema (HAE) attacks have undergone significant evolution. Early treatment guidelines, such as the Canadian 2003 International Consensus Algorithm, often gated on-demand treatment by attack location and/or severity. Pivotal trials for on-demand injectable treatments (plasma-derived C1 esterase inhibitor [C1INH], icatibant, ecallantide [US only], recombinant C1INH), which were approved in the US and EU between 2008-2014, were designed accordingly.
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