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New autosomal recessive cerebellar ataxias with oculomotor apraxia

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Abstract

Autosomal recessive cerebellar ataxias (ARCAs) are a phenotypically and genetically heterogeneous group of diseases. Recently, a subgroup of ARCA associated with oculomotor apraxia (AOA) has been delineated. It includes at least four distinct genetic entities: ataxia-telangiectasia, ataxia-telangiectasia-like disorder, and ataxia with oculomotor apraxia type 1 (AOA1) and type 2 (AOA2). The phenotypes share several similarities, and the responsible genes, ATM, MRE11, APTX, and SETX, respectively, are all implicated in DNA break repair. As in many other DNA repair deficiencies, neurodegeneration is a hallmark of these diseases. Recently, the genes for two new autosomal recessive cerebellar ataxias with oculomotor apraxia, AOA1 and AOA2, were identified. Here, we report the phenotypic characteristics, genetic characteristics, and the recent advances concerning AOA1 and AOA2.

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  1. INSERM U679, HÔpital Pitié-SalpétriÊre, 47 boulevard de l’HÔpital, 75651, Paris, Cedex 13, France

    Alexandra Dürr MD, PhD

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  1. Isabelle Le Ber MD
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  2. Alexis Brice MD
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  3. Alexandra Dürr MD, PhD
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Le Ber, I., Brice, A. & Dürr, A. New autosomal recessive cerebellar ataxias with oculomotor apraxia. Curr Neurol Neurosci Rep 5, 411–417 (2005). https://doi.org/10.1007/s11910-005-0066-4

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