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Sánchez-Monteagudo A, Álvarez-Sauco M, Sastre I, Martínez-Torres I, Lupo V, Berenguer M, Espinós C. Genetics of Wilson disease and Wilson-like phenotype in a clinical series from eastern Spain. Clin Genet 2020; 97:758-763. [PMID: 32043565 DOI: 10.1111/cge.13719] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/13/2020] [Accepted: 02/07/2020] [Indexed: 12/12/2022]
Abstract
Wilson's disease (WD) is an autosomal recessive disorder caused by ATP7B mutations. Subjects with only one mutation may show clinical signs and individuals with biallelic changes may remain asymptomatic. We aimed to achieve a conclusive genetic diagnosis for 34 patients clinically diagnosed of WD. Genetic analysis comprised from analysis of exons to WES (whole exome sequencing), including promoter, introns, UTRs (untranslated regions), besides of study of large deletions/duplications by MLPA (multiplex ligation-dependent probe amplification). Biallelic ATP7B mutations were identified in 30 patients, so that four patients were analyzed using WES. Two affected siblings resulted to be compound heterozygous for mutations in CCDC115, which is involved in a form of congenital disorder of glycosylation. In sum, the majority of patients with a WD phenotype carry ATP7B mutations. However, if genetic diagnosis is not achieved, additional genes should be considered because other disorders may mimic WD.
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Affiliation(s)
- Ana Sánchez-Monteagudo
- Unit of Genetics and Genomics of Neuromuscular and Neurodegenerative Disorders, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain.,Rare Diseases Joint Unit, CIPF-IIS La Fe, Valencia, Spain
| | - María Álvarez-Sauco
- Department of Neurology, Hospital General Universitari d'Elx, Alicante, Spain
| | - Isabel Sastre
- Department of Neurology, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Vincenzo Lupo
- Unit of Genetics and Genomics of Neuromuscular and Neurodegenerative Disorders, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain.,Rare Diseases Joint Unit, CIPF-IIS La Fe, Valencia, Spain
| | - Marina Berenguer
- Rare Diseases Joint Unit, CIPF-IIS La Fe, Valencia, Spain.,Hepatology - Liver Transplantation Unit, Digestive Medicine Service, IIS La Fe and CIBER-EHD, Hospital Universitari i Politècnic La Fe, Valencia, Spain.,Department of Medicine, Universitat de València, Valencia, Spain
| | - Carmen Espinós
- Unit of Genetics and Genomics of Neuromuscular and Neurodegenerative Disorders, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain.,Rare Diseases Joint Unit, CIPF-IIS La Fe, Valencia, Spain
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