Clinical and Genetic Findings in Mexican Patients with Duane Anomaly and Radial Ray Malformations/Okihiro Syndrome



Título del documento: Clinical and Genetic Findings in Mexican Patients with Duane Anomaly and Radial Ray Malformations/Okihiro Syndrome
Revista: Revista de investigación clínica
Base de datos: PERIÓDICA
Número de sistema: 000455314
ISSN: 0034-8376
Autores: 1
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Instituciones: 1Instituto de Oftalmología "Fundación Conde de Valenciana", Departamento de Genética, Ciudad de México. México
2Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Departamento de Genética, Ciudad de México. México
3Centro de Rehabilitación Infantil Teletón, Oaxaca. México
Año:
Periodo: Sep-Oct
Volumen: 68
Número: 5
Paginación: 269-274
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, descriptivo
Resumen en inglés Okihiro syndrome is an autosomal-dominant condition characterized by radial ray malformations associated with Duane anomaly and other clinical characteristics. SALL4 mutations have been identified in 80-90% of patients with DuaneRadial ray defects/Okihiro syndrome. We report the clinical findings and results of SALL4 sequencing from a group of Mexican patients with this disorder. Objective: Clinical description and identification of SALL4 mutations in Mexican subjects with radial defects and Duane anomaly. Materials and methods: Five unrelated index cases were studied. Complete ophthalmologic and general physical examination was performed in all patients. Polymerase chain reaction amplification and automated nucleotide sequencing of coding exons and intron-exon junctions of SALL4 gene were carried out in genomic DNA. Results: A novel heterozygous deletion was identified in one patient. Intragenic heterozygous single nucleotide polymorphisms on SALL4 gene ruled out deletions of some exons in other affected patients in whom non-pathogenic variants were identified by Sanger sequencing. Likewise, multiplex ligation-dependent probe amplification analysis ruled out large deletions in this gene. Conclusion: We observed a low frequency of SALL4 mutations in Mexican patients with clinical criteria of Okihiro syndrome
Disciplinas: Medicina
Palabras clave: Genética,
Oftalmología,
Anomalía de Duane,
Síndrome de Okihiro,
Estrabismo,
Herencia autosómica dominante
Keyword: Genetics,
Ophthalmology,
Duane anomaly,
Okihiro syndrome,
Strabismus,
Dominant autosomal inheritance
Texto completo: https://www.medigraphic.com/pdfs/revinvcli/nn-2016/nn165g.pdf