Autosomal recessive cerebellar ataxia caused by mutations in the PEX2 gene

Autor: Wanders Ronald J, Waterham Hans R, Ferdinandusse Sacha, Sevin Caroline, Aubourg Patrick
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: Orphanet Journal of Rare Diseases, Vol 6, Iss 1, p 8 (2011)
Druh dokumentu: article
ISSN: 1750-1172
DOI: 10.1186/1750-1172-6-8
Popis: 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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