Hereditary angioedema is a rare, potentially life-threatening genetic disease that manifests with skin and mucous/submucosal swelling that occurs under the influence of bradykinin. The clinical guidelines for hereditary angioedema (code for the International Statistical Classification of Diseases and Related Health Problems D84.1) were developed in December 2020 by the Russian Association of Allergology and Clinical Immunology, Association of Medical Geneticists, National Association of Experts in the Field of Primary Immunodeficiencies, Union of Pediatricians of Russia. In December 2020, the project was approved at a meeting of the Scientific and Practical Council of the Ministry of Health of the Russian Federation (December 10, 2020 No. 743/12). The clinical guidelines are devoted to optimizing the clinical care of patients with hereditary angioedema. The topic is relevant owing to the under-diagnosis of hereditary angioedema and insufficient awareness of doctors of various specialties about this problem, as well as the difficulties in managing this category of patients. The clinical guidelines contain information about the epidemiology, etiology, classification, pathogenesis, and common clinical manifestations of hereditary angioedema. Thus, the paper described actual diagnostic approaches and differential diagnosis of hereditary angioedema and established its diagnostic criteria. Medical care algorithms to patients with hereditary angioedema at the prehospital and hospital stages are also described. The principles of pharmacotherapy, including long-term prophylaxis, short-term prophylaxis, and acute therapy, for hereditary angioedema are also presented. Treatment regimens are stratified according to patients age and gender. Non-drug measures for the prevention hereditary angioedema attacks are considered. Sections were also added in the edition of the new clinical guidelines of hereditary angioedema. Clinical guidelines for hereditary angioedema are intended for practicing doctors of all specialties, students and teachers of medical universities, residents, graduate students of medical universities.
BACKGROUND: In 2018, a new form of hereditary angioedema without C1-inhibitor deficiency hereditary angioedema with a mutation in the plasminogen gene was identified. The world scientific literature describes a small number of patients with this form of the disease and, therefore, new research is relevant. AIMS: To identify the sociodemographic and clinical features of patients with hereditary angioedema with plasminogen gene mutation; to evaluate the treatment efficacy; to conduct a comparative analysis in a group of patients with hereditary angioedema type I/II. MATERIAL AND METHODS: 14 patients (1 male and 13 females, mean age 51.6413.55 years) with hereditary angioedema with c.988AG mutation in the plasminogen gene (p.Lys330Glu; K330E) were enrolled in a retrospective study. The comparison group included 194 patients with hereditary angioedema type I/II (56 males and 138 females, mean age 37.0316.23 years). RESULTS: The average age at disease onset in patients with hereditary angioedema with a mutation in the plasminogen gene is 25.0710.46 years, which is significantly higher than in patients with hereditary angioedema type I/II 11.588.92 years (p 0.001). Peripheral angioedema was reported in 21.4% of patients with hereditary angioedema with a mutation in the plasminogen gene, abdominal attacks in 28.6%, which is less common than in patients with hereditary angioedema type I/II (peripheral edema 97.4%, p 0.001; abdominal attacks 86.6%, p 0.001). Face and neck angioedema was observed in all patients with hereditary angioedema with a mutation in the plasminogen gene (100%) and in 72.2% of patients in the group of hereditary angioedema type I/II (p=0.023). 85.7% of patients with hereditary angioedema with a mutation in the plasminogen gene had edema of the tongue. A decrease in the severity and duration of 28 out of 29 attacks by an average of 71.4% was reported by 4/5 of patients who used icatibant (Firazyr); 3/4 of patients reported a decrease in the frequency of attacks during treatment with tranexamic acid. CONCLUSIONS: The diseases manifestation in adulthood, the predominance of face and tongue angioedema are common features of hereditary angioedema with a mutation in the plasminogen gene. The efficacy of tranexamic acid and icatibant was demonstrated in the observed cohort of patients.
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