Targeted NGS meets expert clinical characterization: Efficient diagnosis of spastic paraplegia type 11

Next generation sequencing (NGS) is transforming the diagnostic approach for neurological disorders, since it allows simultaneous analysis of hundreds of genes, even based on just a broad, syndromic patient categorization. However, such an approach bears a high risk of incidental and uncertain genet...

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Detalles Bibliográficos
Autores: Castro Fernández, Cristina, Arias Gómez, Manuel, Blanco Arias, Patricia, Santomé Collazo, Luís, Amigo Lechuga, Jorge, Carracedo Álvarez, Ángel, Sobrido Gómez, María Jesús
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Servizo Galego de Saúde (SERGAS)
Repositorio:RUNA. Repositorio da Consellería de Sanidade e Sergas
OAI Identifier:oai:runa.sergas.gal:20.500.11940/4131
Acceso en línea:http://hdl.handle.net/20.500.11940/4131
Access Level:acceso abierto
Palabra clave:Diagnosis
Hereditary spastic paraplegia
Spg11
Targeted NGS
Thin corpus callosum
Descripción
Sumario:Next generation sequencing (NGS) is transforming the diagnostic approach for neurological disorders, since it allows simultaneous analysis of hundreds of genes, even based on just a broad, syndromic patient categorization. However, such an approach bears a high risk of incidental and uncertain genetic findings. We report a patient with spastic paraplegia whose comprehensive neurological and imaging examination raised a high clinical suspicion of SPG11. Thus, although our NGS pipeline for this group of disorders includes gene panel and exome sequencing, in this sample only the spatacsin gene region was captured and subsequently searched for mutations. Two probably pathogenic variants were quickly and clearly identified, confirming the diagnosis of SPG11. This case illustrates how combination of expert clinical characterization with highly oriented NGS protocols leads to a fast, cost-efficient diagnosis, minimizing the risk of findings with unclear significance.