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Effects of splicing variants on post-transcriptional sequence: integrated genome and transcriptome analysis

Research Project

Project/Area Number 19K17342
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionKeio University

Principal Investigator

YAMADA Mamiko  慶應義塾大学, 医学部(信濃町), 助教 (60835601)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsスプラシング / トランスクリプトーム / 統合解析 / スプライシング / トランスクリプトーム解析 / 深部イントロン変異 / キメラ遺伝子 / RNAシーケンシング / スプライシング異常
Outline of Research at the Start

遺伝子診断における課題は、検出したゲノム変異がmRNAのスプライシングに及ぼす影響について網羅的な検討が行われていないことである。申請者は、がん研究分野で開発されたベイズ・ネットワーク理論に基づくSAVNet解析アルゴリズムが生殖細胞系列変異にも適用可能であることを150余例の公開配列データに関する先行研究により実証した。その一部について、公開配列データの起源細胞株を入手・培養し、in vitroのRNA実験を通じて異常トランスクリプトの存在やその配列異常を確認する。さらにスプライシング異常が疑われる原因不明肝疾患患者を対象に統合的解析を実施し実臨床におけるSAVNet解析の有用性を確立する。

Outline of Final Research Achievements

The effects of genomic variants on mRNA splicing were comprehensively investigated, and it was shown that genomic variants cause splicing abnormalities. Surprisingly, they also showed that transcripts produced by variants recognized as silent or missense variants in conventional exome analysis cause nonsense or frameshift mutations. In actual clinical practice, integrated genomic and transcriptomic analysis confirmed the diagnosis in patients with mutations in the HNRNPK gene, PUF60 gene, JMJD1C gene, and RNPC3 gene. Chimeric gene formation was shown to be one of the important mechanisms of congenital genetic diseases. The utility of RNA analysis in genetic analysis was established.

Academic Significance and Societal Importance of the Research Achievements

小児遺伝性疾患の原因解明のために遺伝学的検査、特にエクソーム解析が中心的役割を果たしている。しかしその診断率には限界があり、その原因の一つとしてスプライシング異常の影響を考慮した検出ができないことが挙げられる。そこでエクソーム解析とRNA解析を組み合わせた解析手法を、小児遺伝性疾患の患者に適用し、その有用性を既存のデータベースに対して検証し有益性を認識した。その上で、実際の患者さんの解析にも適用し、複数の患者さんで確定診断に至ることができた。本研究により適切な診断による根拠に基づく予後の予測、治療法の導入、適切な検査の実施に貢献できると考えられた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (21 results)

All 2021 2020 2019

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (13 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results)

  • [Journal Article] Establishing intellectual disability as the key feature of patients with biallelic RNPC3 variants2021

    • Author(s)
      Yamada Mamiko、Ono Masae、Ishii Tomohiro、Suzuki Hisato、Uehara Tomoko、Takenouchi Toshiki、Kosaki Kenjiro
    • Journal Title

      American Journal of Medical Genetics Part A

      Volume: 185 Issue: 6 Pages: 1836-1840

    • DOI

      10.1002/ajmg.a.62152

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of chimeric transcript formation in the pathogenesis of birth defects2020

    • Author(s)
      Yamada Mamiko、Suzuki Hisato、Watanabe Akiko、Uehara Tomoko、Takenouchi Toshiki、Mizuno Seiji、Kosaki Kenjiro
    • Journal Title

      Congenital Anomalies

      Volume: - Issue: 3 Pages: 76-81

    • DOI

      10.1111/cga.12400

    • NAID

      210000158608

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Learning disability and myoclonic epilepsy associated with apparently synonymous but splice‐disrupting JMJD1C variant that led to 21?bp deletion of the transcript2020

    • Author(s)
      Yamada Mamiko、Sokoda Tatsuyuki、Uehara Tomoko、Suzuki Hisato、Takenouchi Toshiki、Yagihashi Tatsuhiko、Maruo Yoshihiro、Kosaki Kenjiro
    • Journal Title

      American Journal of Medical Genetics Part A

      Volume: 182 Issue: 12 Pages: 3064-3067

    • DOI

      10.1002/ajmg.a.61892

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Diagnostic utility of integrated analysis of exome and transcriptome: Successful diagnosis of Au‐Kline syndrome in a patient with submucous cleft palate, scaphocephaly, and intellectual disabilities2020

    • Author(s)
      Yamada Mamiko、Shiraishi Yuichi、Uehara Tomoko、Suzuki Hisato、Takenouchi Toshiki、Abe‐Hatano Chihiro、Kurosawa Kenji、Kosaki Kenjiro
    • Journal Title

      Molecular Genetics & Genomic Medicine

      Volume: 8 Issue: 9

    • DOI

      10.1002/mgg3.1364

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Protein elongation variant of PUF60 : Milder phenotypic end of the Verheij syndrome2020

    • Author(s)
      Yamada Mamiko、Uehara Tomoko、Suzuki Hisato、Takenouchi Toshiki、Kosaki Kenjiro
    • Journal Title

      American Journal of Medical Genetics Part A

      Volume: 182 Issue: 11 Pages: 2709-2714

    • DOI

      10.1002/ajmg.a.61816

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Shortfall of Exome Analysis for Diagnosis of Shwachman-Diamond Syndrome: Mismapping due to the Pseudogene SBDSP12020

    • Author(s)
      Yamada Mamiko、Uehara Tomoko、Suzuki Hisato、Takenouchi Toshiki, Inui Ayano, Ikemiyagi Masako, Kamimaki Isamu, and Kosaki Kenjiro
    • Journal Title

      American Journal of Medical Genetics Part A

      Volume: - Issue: 7 Pages: 1631-1636

    • DOI

      10.1002/ajmg.a.61598

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effectiveness of integrated interpretation of exome and corresponding transcriptome data for detecting splicing variants of genes associated with autosomal recessive disorders2019

    • Author(s)
      Yamada Mamiko、Suzuki Hisato、Shiraishi Yuichi、Kosaki Kenjiro
    • Journal Title

      Molecular Genetics and Metabolism Reports

      Volume: 21 Pages: 100531-100531

    • DOI

      10.1016/j.ymgmr.2019.100531

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] IFT172 as the 19th gene causative of oral‐facial‐digital syndrome2019

    • Author(s)
      Yamada Mamiko、Uehara Tomoko、Suzuki Hisato、Takenouchi Toshiki、Fukushima Hiroyuki、Morisada Naoya、Tominaga Kenta、Onoda Motohiro、Kosaki Kenjiro
    • Journal Title

      American Journal of Medical Genetics Part A

      Volume: 179 Issue: 12 Pages: 2510-2513

    • DOI

      10.1002/ajmg.a.61373

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] トランスクリプトームおよび全ゲノム解析を用いた キメラ遺伝子形成による 先天性遺伝性疾患発症機序の解明2021

    • Author(s)
      山田茉未子
    • Organizer
      第61回日本先天異常学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Chimeric transcript formation as a new pathogenetic mechanism of rare and undiagnosed diseases: Analysis using whole genome sequencing and long-read transcriptome sequencing2021

    • Author(s)
      山田茉未子、鈴木寿人、渡邊晶子、上原朋子、武内俊樹、水野誠司、小崎健次郎
    • Organizer
      2021年欧州人類遺伝学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] RNA解析・全ゲノム解析の医療実装による未診断疾患の解決を目指して2021

    • Author(s)
      山田茉未子
    • Organizer
      第22回日本RNA学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Chimeric transcript formation as a new pathogenetic mechanism of rare and undiagnosed diseases2021

    • Author(s)
      山田茉未子、鈴木寿人、渡邊晶子、上原朋子、武内俊樹、水野誠司、小崎健次郎
    • Organizer
      第124回日本小児科学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 小児先天性遺伝性疾患における新たな発症機序の解明―ゲノム構造異常によるキメラ遺伝子形成の網羅的解析―2021

    • Author(s)
      山田茉未子、鈴木 寿人、水野 誠司、渡邊 晶子、上原 朋子、武内 俊樹、小崎 健次郎
    • Organizer
      第43回日本小児遺伝学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Chimeric transcript formation as a new pathogenetic mechanism of rare and undiagnosed diseases2020

    • Author(s)
      山田茉未子、鈴木 寿人、水野 誠司、渡邊 晶子、上原 朋子、武内 俊樹、小崎 健次郎
    • Organizer
      第65回日本人類遺伝学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Effectiveness of transcriptome analysis in deciphering molecular pathology of patients with suspected genetic disorders2020

    • Author(s)
      Mamiko Yamada
    • Organizer
      第43回日本分子生物会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Documentation of IFT172 as the nineteenth gene causative of oral-facial-digital syndrome underscores the importance of ciliary trafficking in its pathogenesis.2020

    • Author(s)
      山田茉未子、小崎健次郎
    • Organizer
      2020 Western Medical Research Conference.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effectiveness of integrated interpretation of exome and corresponding transcriptome data in detecting splicing variants of recessive disorders.2019

    • Author(s)
      山田茉未子、白石友一、鈴木寿人、小崎健次郎
    • Organizer
      第52回欧州人類遺伝学会
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effectiveness of integrated interpretation of exome and corresponding transcriptome data in detecting splicing variants: Population and clinical studies.2019

    • Author(s)
      山田茉未子、白石友一、鈴木寿人、黒澤健司、小崎健次郎
    • Organizer
      第59回日本先天異常学会・The 13th World Congress of International Cleft Lip and Palate foundation CLEFT 合同開催
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effectiveness of integrated interpretation of exome and corresponding transcriptome data in detecting splicing variants: Population and clinical studies.2019

    • Author(s)
      山田茉未子、白石友一、鈴木寿人、小崎健次郎
    • Organizer
      Scientific, Practical Conference DYSMORPHOLOGY AUTUMN 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] IFT172 Mutation as the Nineteenth Cause of Oral-Facial-Digital Syndrome2019

    • Author(s)
      山田茉未子、鈴木寿人、上原朋子、武内俊樹、小崎健次郎
    • Organizer
      米国人類遺伝学会
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Integration of exome data with transcriptome data increased detection of pathogenic variants by 20% among 179 samplesエクソームとRNA-seq解析を統合させると病的変異の検出はエクソームのみに比較して20%上昇する~179検体の解析から~2019

    • Author(s)
      山田茉未子、白石友一、鈴木寿人、小崎健次郎
    • Organizer
      第64回日本人類遺伝学会・第19回東アジア人類遺伝学会連合大会
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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