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Retinochoroidal atrophy in two adult patients with Angelman syndrome

Authors

  • A. Rufa,

    1. Unit of Neurometabolic Disease and Research Centre for Diagnosis, Therapy and Prevention of Neurohandicap, Department of Neurological and Behavioural Science University of Siena, Italy
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  • M.T. Dotti,

    1. Unit of Neurometabolic Disease and Research Centre for Diagnosis, Therapy and Prevention of Neurohandicap, Department of Neurological and Behavioural Science University of Siena, Italy
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  • A. Orrico,

    1. Unit of Medical Genetics, Azienda Ospedaliera Senese, Siena, Italy
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  • C. Battisti,

    1. Unit of Neurometabolic Disease and Research Centre for Diagnosis, Therapy and Prevention of Neurohandicap, Department of Neurological and Behavioural Science University of Siena, Italy
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  • F. Carletto,

    1. Associazione “Anni Verdi”, Rome, Italy
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  • A. Federico

    Corresponding author
    1. Unit of Neurometabolic Disease and Research Centre for Diagnosis, Therapy and Prevention of Neurohandicap, Department of Neurological and Behavioural Science University of Siena, Italy
    • Research Centre for Diagnosis, Prevention and Therapy of Neurohandicap, University of Siena, Viale Bracci, 53100 Siena, Italy.
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Abstract

We describe a new ocular finding, retinochoroidal atrophy (RCA), associated with optic disk paleness in two adult patients with Angelman syndrome (AS) due to maternal 15q11-13 deletion. The ocular involvement described in children with AS consists iris and choroids hypopigmentation due to loss of function of one copy of P gene involved in maternal deletion. The loss of one copy of the same gene of paternal origin leads to a similar ocular phenotype as in Prader–Willi syndrome (PWS). However to our knowledge, RCA has never been described before in PWS, suggesting that other maternally expressed genes, particularly UBE3A, could be responsible for the retinal changes observed in the adult AS phenotype. Although, further investigations would be necessary to better understand the role of the UBE3A in the retina, the findings reported here should prompt a systematic ophthalmologic evaluation adult patients with AS in order to establish the real incidence of RCA and prevent further disability in these patients. © 2003 Wiley-Liss, Inc.

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