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Identification of CNV of deafness gene and development of simple test method by long read sequencing

Research Project

Project/Area Number 21K09644
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56050:Otorhinolaryngology-related
Research Institution独立行政法人国立病院機構(東京医療センター臨床研究センター)

Principal Investigator

Matsunaga Tatsuo  独立行政法人国立病院機構(東京医療センター臨床研究センター), 聴覚・平衡覚研究部, 部長 (90245580)

Co-Investigator(Kenkyū-buntansha) 奈良 清光  独立行政法人国立病院機構(東京医療センター臨床研究センター), 聴覚・平衡覚研究部, 研究員 (40260327)
務台 英樹  独立行政法人国立病院機構(東京医療センター臨床研究センター), その他部局等, 研究員 (60415891)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords難聴 / 遺伝子解析 / コピー数変異 / ロングリードシーケンス / Copy Number Variant / 難聴遺伝子
Outline of Research at the Start

遺伝性難聴の原因の一部に、ゲノム領域の大きな欠失・重複であるCopy Number Variant (CNV)が関与している。特に軽~中等度の小児難聴の約30%の原因であるSTRC遺伝子では、90%以上の症例でCNVが難聴の原因である。しかし、CNVは現行の各種検査・解析手法では検出が困難である。本研究の目的は、難聴遺伝子において、新たな遺伝子解析技術であるロングリードシーケンサーによるCNV同定、簡便なCNV検出法の構築、およびCNVの詳細と臨床所見の相関を解明することである。本研究によって構築されるCNV検出法は、難聴の遺伝子診断率の向上と、より効果的な医学的介入につながる。

Outline of Final Research Achievements

Two prediction programs for copy number variation (CNV) based on short-read sequencing results were run on hearing loss samples collected in the laboratory, using either the MLPA method or quantitative PCR assays with TaqMan probes to confirm CNV changes. Five types of CNVs were detected, leading to the determination of the cause of hearing loss in specimens with previously unidentified hearing loss.

Academic Significance and Societal Importance of the Research Achievements

遺伝性難聴の原因の一部に、ゲノム領域の大きな欠失・重複であるCopy Number
Variant (CNV)が関与している。しかし、CNVは現行の各種検査・解析手法では検出が困難であった。本研究では、新たな遺伝子解析技術であるロングリードシーケンサーによるCNV同定、簡便なCNV検出法の構築を可能にした。本研究によって構築されるCNV検出法は、難聴の遺伝子診断率の向上と、より効果的な医学的介入につながるものである。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (11 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results)

  • [Journal Article] Copy Number Variation (CNV)による感音難聴の3症例への遺伝カウンセリング2024

    • Author(s)
      小野智愛、坂本浩一、馬場遥香、松永達雄
    • Journal Title

      小児耳鼻咽喉科

      Volume: 44(3) Pages: 355-360

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 遺伝学的検査の基本と最新情報2022

    • Author(s)
      松永達雄
    • Journal Title

      耳鼻咽喉科・頭頸部外科

      Volume: 94 Pages: 1010-1013

    • Related Report
      2022 Research-status Report
  • [Journal Article] Phenotype-genotype correlation in patients with typical and atypical branchio-oto-renal syndrome2022

    • Author(s)
      Masuda M, Kanno A, Nara K, Mutai H,Morisada N, Iijima K, Morimoto N, Nakano A, Sugiuchi T, Okamoto Y, Masuda S, Katsunuma S, Ogawa K, Matsunaga T
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 969-969

    • DOI

      10.1038/s41598-022-04885-w

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Whole exome analysis of patients in Japan with hearing loss reveals high heterogeneity among responsible and novel candidate genes.2022

    • Author(s)
      Hideki Mutai, Yukihide Momozawa, Yoichiro Kamatani, Atsuko Nakano, Hirokazu Sakamoto, Tetsuya Takiguchi, Kiyomitsu Nara, Michiaki Kubo, Tatsuo Matsunaga.
    • Journal Title

      Orphanet Journal of Rare Diseases

      Volume: 17 Issue: 1 Pages: 114-114

    • DOI

      10.1186/s13023-022-02262-4

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 難聴患者に対するゲノム情報を活用した個別最適医療2024

    • Author(s)
      松永達雄
    • Organizer
      第17回感覚器シンポジウム 感覚器を取り巻くゲノム医療の最前線
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Innovation of clinical practice for hearing loss by implementation of large-scale genetic test2024

    • Author(s)
      Matsunaga T
    • Organizer
      Luncheon Seminar, The 14th International Collaborative Forum of Human Gene Therapy for Genetic Disease
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Genetic Basis of Hearing Loss2024

    • Author(s)
      Matsunaga T
    • Organizer
      Symposium: Recent Advances in the Diagnosis and Management of Genetic Hearing Loss, The 19th Korean-Japan Joint Meeting of Otorhinolaryngology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Efficient identification of causative genes of hearing loss by phenotype similarity analysis.2023

    • Author(s)
      Mutai H, Miya F, Nara K, Muramatsu R, Inoue S, Murakami H, Minami S, Nakano A, Arimoto Y, Morimoto N, Kawasaki T, Wasano K, Sakamoto H, Katsunuma S, Masuda S, Yamazawa K, Kosaki K, Tsunoda T, Matsunaga T
    • Organizer
      Human Genetics Asia 2023 (The 68th Annual Meeting of the Japan Society of Human Genetics).
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Clinical approach to genetic hearing loss in the era of information explosion2023

    • Author(s)
      Matsunaga T
    • Organizer
      Keynote Lecture, The 75th Korean Audiological Society Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Genetic spectrum of deaf-blindness and its clinical implications in cochlear implantation2023

    • Author(s)
      Matsunaga T
    • Organizer
      Symposium: Genetic Information for CI, 14th Asia Pacific Symposium on Cochlear Implant and Related Sciences (APSCI)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 当院を受診した難聴者に対する遺伝子診断と遺伝カウンセリングの現況2021

    • Author(s)
      井上沙聡、奈良清光、務台英樹、南修司郎、加我君孝、和佐野浩一郎、松永達雄
    • Organizer
      第 31 回日本耳科学会 総会・学術講演会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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