Author/Editor		Karandža-Lapić, Ljerka; Korošec, Peter; Šilar, Mira; Košnik, Mitja; Cikojević, Draško; Lozić, Bernarda; Rijavec, Matija
Title		Frequent life-threatening laryngeal attacks in two Croatian families with hereditary angioedema due to C1 inhibitor deficiency harbouring a novel frameshift mutation in SERPING1
Type		članek
Publication year		2016
ISSN		1365-2060 - Annals of medicine
Language		eng
Abstract		Objective: Hereditary angioedema due to C1 inhibitor deficiency (C1-INH-HAE) is a rare autosomal dominant disease caused by mutations in the SERPING1 gene. It can affect many regions in the body, but potentially life-threatening laryngeal oedemas are of concern. Methods: Twenty-three subjects from two families were recruited for clinical data evaluation and molecular analysis at General Hospital Šibenik, Croatia. Results: Decreased levels of C1 inhibitor were detected in 12 adult patients and three young asymptomatic persons. The same novel deletion of two nucleotides on exon 3 (c.74_75delAT) was identified in all of them. A history of laryngeal oedema was present in 10 patients (83%), and all patients reported laryngeal attacks at least once a year. The delay in diagnosis decreased noticeably from the first to the last generation. Conclusions: We identified a novel causative mutation in SERPING1 in several affected members of two apparently unrelated families with a high frequency of laryngeal oedema. Molecular analysis of large C1-INH-HAE families will provide new insights on the genotype-phenotype relationship.
Keywords		edem grla dedni angioedem mutacija laryngeal oedema hereditary angioedema mutation