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EYA1-related disorders: Two clinical cases and a literature review.
MedLine Citation:
PMID:  24803398     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: To delineate the diagnostic and rehabilitative aspects of syndromes that have overlapping features, we present the cases of two unrelated Caucasian males affected by hearing impairment, preauricular pits and cervical fistulae. Specific findings that are helpful in the diagnosis and management of EYA1-related disorders are highlighted.
METHODS: Genetic, otologic, imaging, eye and renal evaluations were conducted to achieve a detailed and comprehensive assessment, leading to the most accurate diagnosis and appropriate treatment. A literature review was also carried out.
RESULTS: Diagnostic criteria indicated that the two patients were affected by BOS1 (Branchio-Otic Syndrome 1). We also identified a novel sporadic missense mutation in the EYA1 gene: p.G533R (c.1597G>A, NM_000503.4), a highly conserved, heterozygotic amino acid substitution. In the other case, we identified the p.X593QextX6 (c.1777T>A, NM_000503.4) substitution, known to be responsible for BO/BOR phenotypes. Both substitutions lead to isoform 1 (EYA1B and EYA1C) which is composed of 592 amino acids. Clinical and in silico evidence suggests a pathogenic role for the new, never before described p.G533R mutation. Imaging evaluation revealed a complex pathology, characterized by external, inner and middle ear malformations, without renal anomalies.
CONCLUSIONS: Our results demonstrate the importance of considering the imaging evaluation and the complete DNA sequencing of the EYA1 gene for the differential diagnosis of deafness and related branchio-oto-renal disorders.
Authors:
Alessandro Castiglione; Salvatore Melchionda; Massimo Carella; Patrizia Trevisi; Roberto Bovo; Renzo Manara; Alessandro Martini
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Publication Detail:
Type:  REVIEW     Date:  2014-4-12
Journal Detail:
Title:  International journal of pediatric otorhinolaryngology     Volume:  -     ISSN:  1872-8464     ISO Abbreviation:  Int. J. Pediatr. Otorhinolaryngol.     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-5-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8003603     Medline TA:  Int J Pediatr Otorhinolaryngol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.
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