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Chinese Journal of Medical Genetics ; (6): 247-250, 2021.
Artigo em Chinês | WPRIM | ID: wpr-879563

RESUMO

OBJECTIVE@#To explore the genetic basis for a Chinese pedigree with suspected mitochondrial functional defects through combined next-generation sequencing (NGS), copy number variation sequencing (CNV-seq), and mitochondrial DNA (mtDNA) sequencing.@*METHODS@#Clinical data of the proband and his family members were collected. The patient and his parents were subjected to family-trio whole-exome sequencing (WES), CNV-seq and mtDNA variant detection. Candidate variant was verified by Sanger sequencing.@*RESULTS@#Trio-WES revealed that the proband has carried compound heterozygous variants of the NDUFS1 gene, including a paternally derived c.64C>T (p.R22X) nonsense variant and a maternally derived c.845A>G (p.N282S) missense variant. Both variants may cause loss of protein function. No variant that may cause the phenotype was identified by CNV-seq and mtDNA variant analysis.@*CONCLUSION@#Children with suspected mitochondrial disorders may have no specific syndromes or laboratory findings. A comprehensive strategy including mtDNA testing may facilitate the diagnosis and early clinical interventions.


Assuntos
Criança , Humanos , China , Variações do Número de Cópias de DNA , Transporte de Elétrons , Mutação , NADH Desidrogenase/genética , Linhagem
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