Dystonic Tremor in Adult-onset DYT-<i>KMT2B</i>

  • Shimazaki Rui
    Department of Neurology, Tokyo Metropolitan Neurological Hospital, Japan
  • Ikezawa Jun
    Department of Neurology, Tokyo Metropolitan Neurological Hospital, Japan
  • Okiyama Ryoichi
    Department of Neurology, Tokyo Metropolitan Neurological Hospital, Japan
  • Azuma Kenko
    Tokyo Women's Medical University, Institute for Integrated Medical Sciences, Japan
  • Akagawa Hiroyuki
    Tokyo Women's Medical University, Institute for Integrated Medical Sciences, Japan
  • Takahashi Kazushi
    Department of Neurology, Tokyo Metropolitan Neurological Hospital, Japan

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Description

<p>KMT2B-related dystonia (DYT28, DYT-KMT2B) is an inherited dystonia that generally begins in the lower limbs during childhood and evolves into generalized dystonia. We herein report a case of adult-onset DYT28 with dystonic tremor. A 27-year-old woman initially displayed right upper limb and cervical tremors over the course of 1 year. A neurological examination also revealed cervical and lower limb dystonia. Although the disease generally develops during childhood, we diagnosed the woman with DYT28, as genetic testing revealed a mutation in KMT2B. Adult-onset patients with DYT28 might also show uncommon symptoms as well as DYT-TOR1A (DYT1). </p>

Journal

  • Internal Medicine

    Internal Medicine 61 (15), 2357-2360, 2022-08-01

    The Japanese Society of Internal Medicine

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