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Journal of Child Neurology
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Ataxia With Oculomotor Apraxia Type 1 (AOA1): Clinical and Neuropsychological Features in 2 New Patients and Differential Diagnosis

Stefano D'Arrigo, MD

Developmental Neurology Department, Istituto Neurologico C. Besta, darrigo{at}istituto-besta.it

Daria Riva, MD

Developmental Neurology Department, Istituto Neurologico C. Besta

Sara Bulgheroni, MD

Developmental Neurology Department, Istituto Neurologico C. Besta

Luisa Chiapparini, MD

Department of Neuroradiology, Istituto Neurologico C. Besta

Barbara Castellotti, PhD

Department of Biochemistry and Genetics Fondazione Istituto Neurologico "C. Besta," Milan, Italy

Cinzia Gellera, PhD

Department of Biochemistry and Genetics Fondazione Istituto Neurologico "C. Besta," Milan, Italy

Chiara Pantaleoni, MD

Developmental Neurology Department, Istituto Neurologico C. Besta

Ataxia with oculomotor apraxia type 1 (AOA1) is an autosomal recessive disease characterized by early-onset and slowly progressive cerebellar ataxia, areflexia, and peripheral neuropathy. Ocular apraxia is most prominent in the early stage of the disease, by contrast, hypoalbuminemia, hypercholesterolemia, and cognitive impairment are present in the adult stage. AOA1 is caused by a mutation in the APTX gene (9p13.3) encoding a nuclear protein named aprataxin, which is involved in the mechanism of DNA repair. We report here the clinical features of 2 patients with mutations in the APTX gene, and we discuss the differential diagnosis with other forms of hereditary ataxia.

Key Words: AOA1 • ataxia • cerebellar atrophy

This version was published on August 1, 2008

Journal of Child Neurology, Vol. 23, No. 8, 895-900 (2008)
DOI: 10.1177/0883073808314959
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