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Am J Hum Genet ; 111(5): 841-862, 2024 05 02.
Artículo en Inglés | MEDLINE | ID: mdl-38593811

RESUMEN

RNA sequencing (RNA-seq) has recently been used in translational research settings to facilitate diagnoses of Mendelian disorders. A significant obstacle for clinical laboratories in adopting RNA-seq is the low or absent expression of a significant number of disease-associated genes/transcripts in clinically accessible samples. As this is especially problematic in neurological diseases, we developed a clinical diagnostic approach that enhanced the detection and evaluation of tissue-specific genes/transcripts through fibroblast-to-neuron cell transdifferentiation. The approach is designed specifically to suit clinical implementation, emphasizing simplicity, cost effectiveness, turnaround time, and reproducibility. For clinical validation, we generated induced neurons (iNeurons) from 71 individuals with primary neurological phenotypes recruited to the Undiagnosed Diseases Network. The overall diagnostic yield was 25.4%. Over a quarter of the diagnostic findings benefited from transdifferentiation and could not be achieved by fibroblast RNA-seq alone. This iNeuron transcriptomic approach can be effectively integrated into diagnostic whole-transcriptome evaluation of individuals with genetic disorders.


Asunto(s)
Transdiferenciación Celular , Fibroblastos , Neuronas , Análisis de Secuencia de ARN , Humanos , Transdiferenciación Celular/genética , Fibroblastos/metabolismo , Fibroblastos/citología , Análisis de Secuencia de ARN/métodos , Neuronas/metabolismo , Neuronas/citología , Transcriptoma , Reproducibilidad de los Resultados , Enfermedades del Sistema Nervioso/genética , Enfermedades del Sistema Nervioso/diagnóstico , RNA-Seq/métodos , Femenino , Masculino
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