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2020 Fiscal Year Annual Research Report

Gene identification of rare genetic diseases by Multi-Omics analysis

Research Project

Project/Area Number 19H03621
Research InstitutionNational Center for Global Health and Medicine

Principal Investigator

三宅 紀子  国立研究開発法人国立国際医療研究センター, 研究所, 疾患ゲノム研究部 部長 (40523494)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords全エクソーム解析 / 単一遺伝子疾患 / 新規遺伝子候補 / オミックス解析
Outline of Annual Research Achievements

遺伝要因未知の単一遺伝子疾患が想定される症例を対象に、全エクソーム解析を行い、候補となる新規疾患遺伝子を複数同定した。更に、その遺伝学的エビデンスを収集するために、GeneMatcher等のマッチングデータベースを使用し、国内外から複数症例を集積している。そのうちの遺伝子Aに関しては、世界中から少なくとも5症例を集積し、臨床症状の確立、新規遺伝子の機能およびその遺伝子変異による影響を解明するために機能解析を行っている。
また、世界で3家系しか報告のないSLC35A3遺伝子の両アレル性変異の家系を同定した。SLC35A3の両アレル性変異の症例は、胎生致死の重症例から比較的症状の軽い症例の報告があるが、その遺伝型表現型関連は不明である。今回我々の解析した症例は比較的症状が軽度であると考えられた。今回、全エクソーム解析を用い、患児にSLA35A3のホモ接合性バリアントを同定した。その変化によりSLC35A3の3つの既知アイソフォームすべてにスプライシング異常をもたらすことが予想されたため、患者のリンパ芽球様細胞株を樹立し、mRNAの配列を解読したところ、すべてのアイソフォームにおいてナンセンス変異依存性mRNA分解を受けず、一つのアイソフォームではインフレーム欠失が、二つのアイソフォームにおいては通常の開始コドンから一番近い下流のメチオニンを開始コドンとして使用していることを示唆する結果が得られ、短いSLC35A3タンパク質が生成されると考えられた。今回の結果が、症状の重症度の差を説明できる可能性がある。(Miyake et al., 2020 Clin Genet)。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

既に新規候補遺伝子を複数同定しており、機能解析を進めることができている。

Strategy for Future Research Activity

引き続き新規候補遺伝子の遺伝学的エビデンスを収集しつつ、可能性の高いものから優先順位をつけて機能解析を行い、病態解明を進めていく。

  • Research Products

    (18 results)

All 2021 2020 Other

All Int'l Joint Research (5 results) Journal Article (11 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 11 results) Presentation (2 results) (of which Invited: 2 results)

  • [Int'l Joint Research] Tarbiat Modares University/Isfahan University of Medical Sciences/Tehran University of Medical Sciences(イラン)

    • Country Name
      IRAN
    • Counterpart Institution
      Tarbiat Modares University/Isfahan University of Medical Sciences/Tehran University of Medical Sciences
  • [Int'l Joint Research] Hospital Kuala Lumpur(マレーシア)

    • Country Name
      MALAYSIA
    • Counterpart Institution
      Hospital Kuala Lumpur
  • [Int'l Joint Research] Hospital de Puerto Montt/Universidad de Chile/Clinica Alemana de Santiago(チリ)

    • Country Name
      CHILE
    • Counterpart Institution
      Hospital de Puerto Montt/Universidad de Chile/Clinica Alemana de Santiago
    • # of Other Institutions
      1
  • [Int'l Joint Research] Astronaut Research and Training Center/Central South University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      Astronaut Research and Training Center/Central South University
  • [Int'l Joint Research] Universidade de Sao Paulo(ブラジル)

    • Country Name
      BRAZIL
    • Counterpart Institution
      Universidade de Sao Paulo
  • [Journal Article] Novel EXOSC9 variants cause pontocerebellar hypoplasia type 1D with spinal motor neuronopathy and cerebellar atrophy2021

    • Author(s)
      Sakamoto M, Iwama K, Sekiguchi F, Mashimo H, Kumada S, Ishigaki K, Okamoto N, Behnam M, Ghadami M, Koshimizu E, Miyatake S, Mitsuhashi S, Mizuguchi T, Takata A, Saitsu H, Miyake N, Matsumoto N.
    • Journal Title

      Journal of Human Genetics

      Volume: 66 Pages: 401~407

    • DOI

      10.1038/s10038-020-00853-2

    • Peer Reviewed
  • [Journal Article] The identification of two pathogenic variants in a family with mild and severe forms of developmental delay2021

    • Author(s)
      Miyake N, Heydari S, Garshasbi M, Saitoh S, Nasiri J, Hamanaka K, Takata A, Matsumoto N, Beheshti FH, Chaleshtori ARS.
    • Journal Title

      Journal of Human Genetics

      Volume: 66 Pages: 445~448

    • DOI

      10.1038/s10038-020-0809-8

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A patient with a 6q22.1 deletion and a phenotype of non-progressive early-onset generalized epilepsy with tremor2021

    • Author(s)
      Haginoya Kazuhiro、Sekiguchi Futoshi、Munakata Mitsutoshi、Yokoyama Hiroyuki、Hino-Fukuyo Naomi、Uematsu Mitsugu、Jin Kazutaka、Nagamatsu Kenichi、Ando Tadashi、Miyake Noriko、Matsumoto Naomichi、Kure Shigeo
    • Journal Title

      Epilepsy & Behavior Reports

      Volume: 15 Pages: 100405~100405

    • DOI

      10.1016/j.ebr.2020.100405

    • Peer Reviewed
  • [Journal Article] Pathogenic 12-kb copy-neutral inversion in syndromic intellectual disability identified by high-fidelity long-read sequencing2021

    • Author(s)
      Mizuguchi Takeshi、Okamoto Nobuhiko、Yanagihara Keiko、Miyatake Satoko、Uchiyama Yuri、Tsuchida Naomi、Hamanaka Kohei、Fujita Atsushi、Miyake Noriko、Matsumoto Naomichi
    • Journal Title

      Genomics

      Volume: 113 Pages: 1044~1053

    • DOI

      10.1016/j.ygeno.2020.10.038

    • Peer Reviewed
  • [Journal Article] Immunodeficiency in a patient with microcephalic osteodysplastic primordial dwarfism type I as compared to Roifman syndrome2021

    • Author(s)
      Hagiwara Hidetoshi、Matsumoto Hiroshi、Uematsu Kenji、Zaha Kiyotaka、Sekinaka Yujin、Miyake Noriko、Matsumoto Naomichi、Nonoyama Shigeaki
    • Journal Title

      Brain and Development

      Volume: 43 Pages: 337~342

    • DOI

      10.1016/j.braindev.2020.09.007

    • Peer Reviewed
  • [Journal Article] Neuronal intranuclear inclusion disease presenting with an MELAS-like episode in chronic polyneuropathy2020

    • Author(s)
      Ishihara Tasuku、Okamoto Tomoko、Saida Ken、Saitoh Yuji、Oda Shinji、Sano Terunori、Yoshida Takuhiro、Morita Yuki、Fujita Atsushi、Fukuda Hiromi、Miyake Noriko、Mizuguchi Takeshi、Saito Yuko、Sekijima Yoshiki、Matsumoto Naomichi、Takahashi Yuji
    • Journal Title

      Neurology Genetics

      Volume: 6 Pages: e531~e531

    • DOI

      10.1212/NXG.0000000000000531

    • Peer Reviewed
  • [Journal Article] Hemizygous FLNA variant in West syndrome without periventricular nodular heterotopia2020

    • Author(s)
      Hiromoto Yoshitaka、Azuma Yoshiteru、Suzuki Yuichi、Hoshina Megumi、Uchiyama Yuri、Mitsuhashi Satomi、Miyatake Satoko、Mizuguchi Takeshi、Takata Atsushi、Miyake Noriko、Kato Mitsuhiro、Matsumoto Naomichi
    • Journal Title

      Human Genome Variation

      Volume: 7 Pages: 43~43

    • DOI

      10.1038/s41439-020-00131-9

    • Peer Reviewed
  • [Journal Article] Efficient detection of copy‐number variations using exome data: Batch‐ and sex‐based analyses2020

    • Author(s)
      Uchiyama Yuri、Yamaguchi Daisuke、Iwama Kazuhiro、others 、Miyake Noriko、Mizuguchi Takeshi、Matsumoto Naomichi
    • Journal Title

      Human Mutation

      Volume: 42 Pages: 50~65

    • DOI

      10.1002/humu.24129

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A novel ITPA variant causes epileptic encephalopathy with multiple-organ dysfunction2020

    • Author(s)
      Sakamoto Masamune、Kouhei Den、Haniffa Muzhirah、Silva Sebastian、Troncoso M?nica、Santander Paola、Schonstedt Valeria、Stecher Ximena、Okamoto Nobuhiko、Hamanaka Kohei、Mizuguchi Takeshi、Mitsuhashi Satomi、Miyake Noriko、Matsumoto Naomichi
    • Journal Title

      Journal of Human Genetics

      Volume: 65 Pages: 751~757

    • DOI

      10.1038/s10038-020-0765-3

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Long-read DNA sequencing fully characterized chromothripsis in a patient with Langer?Giedion syndrome and Cornelia de Lange syndrome-42020

    • Author(s)
      Lei Ming、Liang Desheng、Yang Yifeng、Mitsuhashi Satomi、Katoh Kazutaka、Miyake Noriko、Frith Martin C.、Wu Lingqian、Matsumoto Naomichi
    • Journal Title

      Journal of Human Genetics

      Volume: 65 Pages: 667~674

    • DOI

      10.1038/s10038-020-0754-6

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] De Novo Truncating Variants in the Last Exon of SEMA6B Cause Progressive Myoclonic Epilepsy2020

    • Author(s)
      Hamanaka Kohei、Imagawa Eri、Koshimizu Eriko、others、Miyake Noriko、Matsumoto Naomichi
    • Journal Title

      The American Journal of Human Genetics

      Volume: 106 Pages: 549~558

    • DOI

      10.1016/j.ajhg.2020.02.011

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Identification of a novel gene for a newly recognizable syndrome and understanding its pathomechanism2020

    • Author(s)
      三宅紀子
    • Organizer
      第65回 日本人類遺伝学会、JSHG-APSHG Joint Symposium
    • Invited
  • [Presentation] 稀少疾患の遺伝子同定と 発症メカニズムの解明2020

    • Author(s)
      三宅紀子
    • Organizer
      第43回日本小児遺伝学会学術集会
    • Invited

URL: 

Published: 2021-12-27  

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