1. Exome sequencing: an efficient diagnostic tool for complex neurodegenerative disorders.
- Author
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Hammer MB, Eleuch-Fayache G, Gibbs JR, Arepalli SK, Chong SB, Sassi C, Bouhlal Y, Hentati F, Amouri R, and Singleton AB
- Subjects
- Adolescent, Age of Onset, Amino Acid Sequence, Apolipoproteins B genetics, Base Sequence, Child, Child, Preschool, Female, Genotype, Humans, Infant, Male, Molecular Sequence Data, Pedigree, Polymorphism, Single Nucleotide, Young Adult, Exome genetics, Heat-Shock Proteins genetics, Proteins genetics, Spinocerebellar Ataxias diagnosis, Spinocerebellar Ataxias genetics
- Abstract
Background and Purpose: Autosomal recessive cerebellar ataxia (ARCA) comprises a large and heterogeneous group of neurodegenerative disorders. We studied three families diagnosed with ARCA., Methods: To determine the gene lesions responsible for their disorders, we performed high-density single-nucleotide polymorphism genotyping and exome sequencing., Results: We identified a new mutation in the SACS gene and a known mutation in SPG11. Notably, we also identified a homozygous variant in APOB, a gene previously associated with ataxia., Conclusions: These findings demonstrate that exome sequencing is an efficient and direct diagnostic tool for identifying the causes of complex and genetically heterogeneous neurodegenerative diseases, early-stage disease or cases with limited clinical data., (Published 2012. This article is a U.S. Government work and is in the public domain in the USA. European Journal of Neurology © 2012 EFNS.)
- Published
- 2013
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