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Hydrocephalus with Hirschsprung disease: Severe end of X-linked hydrocephalus spectrum

Authors

  • Toshiki Takenouchi,

    1. Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
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  • Mie Nakazawa,

    1. Department of Pediatrics, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
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  • Yonehiro Kanemura,

    1. Division of Regenerative Medicine, Institute for Clinical Research, Osaka National Hospital, National Hospital Organization, Osaka, Japan
    2. Department of Neurosurgery, Osaka National Hospital, National Hospital Organization, Osaka, Japan
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  • Sachiko Shimozato,

    1. Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
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  • Mami Yamasaki,

    1. Department of Neurosurgery, Osaka National Hospital, National Hospital Organization, Osaka, Japan
    2. Division of Molecular Medicine, Institute for Clinical Research, Osaka National Hospital, National Hospital Organization, Osaka, Japan
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  • Takao Takahashi,

    1. Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
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  • Kenjiro Kosaki

    Corresponding author
    1. Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
    2. Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
    • Center for Medical Genetics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 1608582 Japan.
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  • How to Cite this Article: Takenouchi T, Nakazawa M, Kanemura Y, Shimozato S, Yamasaki M, Takahashi T, Kosaki K. 2012. Hydrocephalus with Hirschsprung disease: Severe end of X-linked hydrocephalus spectrum. Am J Med Genet Part A 158A:812–815.

Abstract

L1CAM molecule is a cell adhesion molecule in nervous and enteric systems and is responsible for X-linked hydrocephalus (XLH) spectrum, which is a rare condition with severe congenital hydrocephalus, dysgenesis of the corpus callosum, intellectual disability, spasticity, and adducted thumbs. Several cases of XLH accompanied by Hirschsprung disease (HSCR) have been reported in the literature, but whether HSCR results from a gain-of-function mutation in cases with XLH, i.e., a neomorphic mutation, or the severe end of the L1CAM mutation spectrum remains unclear. The present patient was a Japanese boy with severe congenital hydrocephalus with aqueductal stenosis as well as hypoplasia of the corpus callosum. HSCR had been confirmed by a biopsy. A mutation analysis of the L1CAM gene showed a C61T mutation in exon 1, resulting in a truncating nonsense mutation at amino acid position 21 and producing an extremely short protein that was unlikely to interact with other proteins. These findings suggest that XLH-HSCR represents the severe end of the XLH spectrum, rather than a neomorphic mutation. A thorough abdominal investigation to rule out HSCR should be considered in patients with XLH accompanied by severe constipation. © 2012 Wiley Periodicals, Inc.

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