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Ataxia with isolated vitamin E deficiency is caused by mutations in the α–tocopherol transfer protein

Nature Genetics volume 9, pages 141145 (1995) | Download Citation

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Abstract

Ataxia with isolated vitamin E deficiency (AVED) is an autosomal recessive neurodegenerative disease which maps to chromosome 8q13. AVED patients have an impaired ability to incorporate α–tocopherol into lipoproteins secreted by the liver, a function putatively attributable to the α–tocopherol transfer protein (α–TTP). Here we report the identification of three frame–shift mutations in the αTTP gene. A 744delA mutation accounts for 68% of the mutant alleles in the 17 families analysed and appears to have spread in North Africa and Italy. This mutation correlates with a severe phenotype but alters only the C–terminal tenth of the protein. Two other mutations were found in single families. The finding of αTTP gene mutations in AVED patients substantiates the therapeutic role of vitamin E as a protective agent against neurological damage in this disease.

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Affiliations

  1. Institut de Génétique et de Biologie Moléculaire et Cellulaire (CNRS, INSERM, ULP), 1 rue Laurent Fries BP163, 67404 Illkirch cedex, Strasbourg, France

    • Karim Ouahchi
    • , Jean-Louis Mandel
    •  & Michel Koenig
  2. Department of Health Chemistry, Faculty of Pharmaceutical Sciences, Hongo 7-3-1, Bunkyo-ku, Tokyo 113, Japan

    • Makoto Arita
    • , Hiroyuki Arai
    •  & Keizo Inoue
  3. Department of Medicine, NYU Medical Center, New York, New York 10016, USA

    • Herbert Kayden
  4. Institut National de Neurologie, La Rabta, 1007 Tunis, Tunisia

    • Fayçal Hentati
    •  & Mongi Ben Hamida
  5. Section of Pediatric Gastroenterology and Nutrition, University of Colorado School of Medicine, 1056 East 19th Avenue, Denver, Colorado 80218, USA

    • Ronald Sokol
  6. Faculté de Médecine et Centre Hospitalier Universitaire, Strasbourg, France

    • Jean-Louis Mandel
    •  & Michel Koenig

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DOI

https://doi.org/10.1038/ng0295-141

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