Family Phenotypic Profile in Hereditary Hemorrhagic Telangiectasia: Genotype-Phenotype Correlation in the Pediatric Population

Author:

Giorgio Valentina1,Foggia Chiara Di2,Quatrale Giovanna3,Margiotta Gaia1,Stella Giuseppe1,Proli Francesco1,Leoni Chiara1,Onesimo Roberta1,Passali Giulio Cesare4,Contegiacomo Andrea5,Zampino Giuseppe1,Gasbarrini Antonio6,Gaetani Eleonora6

Affiliation:

1. UOC di Pediatria, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore

2. UOC di Pediatria, Dipartimento Materno Infantile e Scienze Urologiche, La Sapienza Università di Roma

3. Pediatric Unit, NESMOS Department, Faculty of Medicine & Psychology, Sapienza University of Rome, Sant’Andrea University Hospital, 00185 Rome, Italy

4. UOC di Otorinolaringoiatria, Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Roma, Italia

5. Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore

6. UOC di Medicina Interna e Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore

Abstract

Abstract

Hereditary Hemorrhagic Telangiectasia (HHT) is a rare, hereditary, autosomal dominant vascular disease, characterized by arteriovenous malformations (AVM), mucocutaneous telangiectasias and epistaxis. The management of pediatric patients is currently based on limited literature. The aim of our study is to evaluate whether the severity of HHT in affected children could be compared to their parents ‘phenotype, sharing the same genetic variants. We collected data about 11 pediatric patients and their parents with a confirmed diagnosis of HHT, from the medical records of Fondazione Policlinico Universitario A. Gemelli IRCCS (Rome, Italy). Starting from the analysis of the genotype-phenotype correlations among pediatric patients and their affected parents, we found that in three families (33,3%) the HHT presentation was similar between affected adults and affected siblings. In six families (67,7%) HHT phenotype was different between parents and children, being frequently more severe in parents rather than in children. Our results revealed a series of evidence confirming that HHT has variable phenotypic expressiveness.

Publisher

Springer Science and Business Media LLC

Reference15 articles.

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