• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of a non-invasive early diagnosis method for fetal long QT syndrome

Research Project

Project/Area Number 21K07765
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionNational Cardiovascular Center Research Institute

Principal Investigator

Kato Yoshiaki  国立研究開発法人国立循環器病研究センター, 病院, 医師 (90635608)

Co-Investigator(Kenkyū-buntansha) 吉松 淳  国立研究開発法人国立循環器病研究センター, 病院, 部長 (20221674)
大野 聖子  国立研究開発法人国立循環器病研究センター, 研究所, 部長 (20610025)
坂口 平馬  国立研究開発法人国立循環器病研究センター, 病院, 医長 (70574630)
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: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsQT延長症候群 / 胎児 / 心磁図 / 胎児心エコー / 先天性QT延長症候群 / 等容拡張時間 / Speckle tracking法 / 胎児診断 / Cell free DNA
Outline of Research at the Start

胎児死亡の原因となりえる胎児のQT延長症候群(LQTS)の早期診断法を確立することが本研究の目的である。非侵襲的な検査である胎児心臓超音波検査、母体採血により胎児LQTSが診断できるかを検討する。胎児心磁図でのQT間隔と心臓超音波検査所見の関係を明らかにし、母体血中のCell free fetal DNAを用いた遺伝子診断の可能性を明らかにする。新規診断法により遺伝子型確定も含めて胎児LQTSを診断することで、有効な胎児治療の選択が可能となり、胎児LQTSの予後改善に貢献できる。

Outline of Final Research Achievements

We conducted a study to establish diagnostic methods for early diagnosis of fetal long QT syndrome (LQTS). We studied the changes in the QT interval and its characteristics by recording fetal magnetocardiograms in fetuses whose mothers had LQTS, and electrocardiograms in the early neonatal period. We also studied the basic data of parameters using pulsed Doppler and Speckle tracking methods to diagnose LQTS by fetal echocardiography. Our results suggested that during fetal to early neonatal period, QT prolongation is most apparent in the second-day-of-life electrocardiogram. We could not validate the diagnostic method with fetal echocardiography in this study, and we would like to continue the study with more cases in the future.

Academic Significance and Societal Importance of the Research Achievements

先天性QT延長症候群は代表的な遺伝性不整脈で、一部では胎児期に発症し致死的な経過をとるが、臨床経過、心電学的な特徴は未だ不明な点が多い。有効な胎児治療を行うために、正確な診断が必要だが、胎児においては通常の心電図を用いることができず、診断自体が難しい。胎児心磁図による診断が行われているが、使用できる施設は限られている。そのため、より一般的に普及している医療機器での診断法の開発が期待されている。胎児~新生児期の特徴を明らかにし、心エコーなどで診断ができるようになれば、致死的な胎児・新生児発症の先天性QT延長症候群の予後を改善に貢献できる。

Report

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

    (12 results)

All 2024 2023 2022 2021

All Journal Article (11 results) (of which Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (1 results)

  • [Journal Article] 特集 完全把握をめざす小児の心疾患 不整脈 上室頻拍・心房粗動・心房細動-WPW症候群を含めて2024

    • Author(s)
      加藤愛章
    • Journal Title

      小児内科

      Volume: 56 Issue: 4 Pages: 634-638

    • DOI

      10.24479/pm.0000001626

    • ISSN
      0385-6305
    • Year and Date
      2024-04-01
    • Related Report
      2023 Annual Research Report
  • [Journal Article] Guidelines for the Secondary Screening of Heart Disease in Schools: Electrocardiographic Findings of the Initial Screening (JSPCCS2019)2024

    • Author(s)
      Mamoru Ayusawa,Mari Iwamoto,Yoshiaki Kato,Taichi Kato. et al
    • Journal Title

      Journal of Pediatric Cardiology and Cardiac Surgery

      Volume: 8 Issue: 1 Pages: 39-52

    • DOI

      10.24509/jpccs.0801G1

    • ISSN
      2433-1783, 2433-2720
    • Year and Date
      2024-02-29
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 特集 エキスパートが教える 小児の薬物治療 Ⅲ.疾患別 C.循環器疾患 頻脈性不整脈2023

    • Author(s)
      加藤愛章
    • Journal Title

      小児内科

      Volume: 55 Issue: 13 Pages: 414-419

    • DOI

      10.24479/pm.0000001260

    • ISSN
      0385-6305
    • Year and Date
      2023-11-30
    • Related Report
      2023 Annual Research Report
  • [Journal Article] Modified procedures of subcutaneous implantable cardioverter defibrillator implantation for a child with small body size2023

    • Author(s)
      Oka Satoshi、Ishibashi Kohei、Kato Yoshiaki、Tominaga Yuji、Kusano Kengo
    • Journal Title

      Journal of Arrhythmia

      Volume: 40 Issue: 1 Pages: 166-169

    • DOI

      10.1002/joa3.12959

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Progressive atrial myocardial fibrosis in a 4-year-old girl with atrial standstill associated with an SCN5A gene mutation2022

    • Author(s)
      Kato Yoshiaki、Nozaki Yoshihiro、Takahashi-Igari Miho、Sugano Masato、Makita Naomasa、Horigome Hitoshi
    • Journal Title

      HeartRhythm Case Reports

      Volume: 8 Issue: 9 Pages: 636-638

    • DOI

      10.1016/j.hrcr.2022.06.010

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Thirty-year outcome in children with hypertrophic cardiomyopathy based on the type2022

    • Author(s)
      Tsuda Etsuko、Ito Yuki、Kato Yoshiaki、Sakaguchi Heima、Ohuchi Hideo、Kurosaki Kenichi
    • Journal Title

      Journal of Cardiology

      Volume: 80 Issue: 6 Pages: 557-562

    • DOI

      10.1016/j.jjcc.2022.07.016

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Impact of cascade screening for catecholaminergic polymorphic ventricular tachycardia type 12022

    • Author(s)
      Shimamoto K, Ohno S, Kato K, Takayama K, Sonoda K, Fukuyama M, Makiyama T, Okamura S, Asakura K, Imanishi N, Kato Y, Sakaguchi H, Kamakura T, Wada M, Yamagata K, Ishibashi K, Inoue Y, Miyamoto K, Nagase S, Kusano K, Horie M, Aiba T.
    • Journal Title

      Heart

      Volume: - Issue: 11 Pages: 2021-320220

    • DOI

      10.1136/heartjnl-2021-320220

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coronary artery aneurysms of unknown origin in a 14-year-old girl2022

    • Author(s)
      Toyoshima Yuka、Tsuda Etsuko、Kato Yoshiaki、Iwasa Tohru、Sakaguchi Heima、Shimahara Yusuke、Tabata Shinya、Ikedo Taichi、Shiraishi Isao、Kurosaki Kenichi
    • Journal Title

      Journal of Cardiology Cases

      Volume: 25 Issue: 2 Pages: 106-109

    • DOI

      10.1016/j.jccase.2021.07.011

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Electrocardiographic Diagnosis of Hypertrophic Cardiomyopathy in the Pre- and Post-Diagnostic Phases in Children and Adolescents2021

    • Author(s)
      Yoshinaga M, Horigome H, Yasuda K, Kogaki S, Tateno S, Ohta K, Hirono K, Hosokawa S, Takechi F, Ishikawa Y, Hata T, Ichida F, Ohno S, Makita N, Horie M, Takahashi H, Nagashima M.
    • Journal Title

      Circulation Journal

      Volume: 86 Issue: 1 Pages: 118-127

    • DOI

      10.1253/circj.CJ-21-0376

    • NAID

      130008132672

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2021-12-24
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 増刊号 なんだか気になる心電図 1章 標準12誘導心電図 この波形はなんだろう?2021

    • Author(s)
      加藤 愛章
    • Journal Title

      臨床検査

      Volume: 65 Issue: 10 Pages: 1077-1081

    • DOI

      10.11477/mf.1542202844

    • ISSN
      0485-1420, 1882-1367
    • Year and Date
      2021-10-15
    • Related Report
      2021 Research-status Report
  • [Journal Article] 【小児遺伝子疾患事典】循環器疾患 KCNQ1(関連疾患:QT延長症候群/Brugada症候群 関連遺伝子:KCNH2、SCN5A)2021

    • Author(s)
      加藤愛章、相庭武司
    • Journal Title

      小児科診療

      Volume: 84 Pages: 1601-1606

    • Related Report
      2021 Research-status Report
  • [Presentation] 胎児期発症の先天性QT延長症候群に対するデバイス治療の長期管理の問題点2023

    • Author(s)
      加藤 愛章, 坂口 平馬, 吉田 礼, 桝野 浩彰, 藤本 一途, 大内 秀雄, 黒嵜 健一
    • Organizer
      第59回日本小児循環器学会
    • Related Report
      2023 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi