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Autosomal recessive cerebellar ataxia caused by mutations in the PEX2 gene.

Abstract : Objective: To expand the spectrum of genetic causes of autosomal recessive cerebellar ataxia (ARCA). Case report: Two brothers are described who developed progressive cerebellar ataxia at 3 1/2 and 18 years, respectively. After ruling out known common genetic causes of ARCA, analysis of blood peroxisomal markers strongly suggested a peroxisomal biogenesis disorder. Sequencing of candidate PEX genes revealed a homozygous c.865_866insA mutation in the PEX2 gene leading to a frameshift 17 codons upstream of the stop codon. PEX gene mutations usually result in a severe neurological phenotype (Zellweger spectrum disorders). Conclusions: Genetic screening of PEX2 and other PEX genes involved in peroxisomal biogenesis is warranted in children and adults with ARCA
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Submitted on : Tuesday, March 29, 2011 - 5:19:22 PM
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Caroline Sevin, Sacha Ferdinandusse, Hans Waterham, Ronald Wanders, Patrick Aubourg. Autosomal recessive cerebellar ataxia caused by mutations in the PEX2 gene.. Orphanet Journal of Rare Diseases, BioMed Central, 2011, 6 (1), pp.8. ⟨10.1186/1750-1172-6-8⟩. ⟨inserm-00580953⟩

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