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The investigation of genetics and pathophysiological mechanism in hypertrophic cardiomyopathy

Research Project

Project/Area Number 16K09440
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Cardiovascular medicine
Research InstitutionKochi University

Principal Investigator

Kubo Toru  高知大学, 教育研究部医療学系臨床医学部門, 講師 (80325422)

Co-Investigator(Kenkyū-buntansha) 北岡 裕章  高知大学, 教育研究部医療学系臨床医学部門, 教授 (10274375)
Project Period (FY) 2016-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords肥大型心筋症 / 遺伝子解析 / サルコメア遺伝子変異 / 突然死 / 塞栓症 / 心不全 / サルコメア遺伝子 / 予後 / 表現型 / 拡張相肥大型心筋症 / ファブリー病 / 遺伝子型
Outline of Final Research Achievements

We performed genetic analysis, pathophysiological evaluation including identification of risk markers, and elucidation of genotype-phenotype correlation in hypertrophic cardiomyopathy (HCM). In genetic analysis, we screened several sarcomere genes in over 200 HCM families. he pathogenic variation analysis, clinical type evaluation, and the relationship between genotype and phenotype in hypertrophic cardiomyopathy. In the pathogenic mutation analysis, mutation screening was performed mainly on the sarcomere protein gene in more than 200 HCM patients. Regarding the clinical impact of presence of those sarcomere mutations, we found that patients with sarcomere gene mutations experienced more frequent HCM-related morbid events. We also identified the risk of sudden death, the risk of embolism, and the risk factors for the progression of left ventricular remodeling of this disease. Identification of these clinical markers is an extremely important finding in clinical management of HCM.

Academic Significance and Societal Importance of the Research Achievements

肥大型心筋症は一般人口の少なくとも500人に1人の頻度で存在する疾患であり、若年者の突然死の原因疾患として最も頻度が高い。本症は遺伝性疾患とされているが、日本人患者を対象にした遺伝子情報と臨床病型との関連性の検討は十分には行われていない。今回の研究で、遺伝子変異の同定される患者は変異非同定患者に比して、予後が不良であることが判明した。このことは本症の病因遺伝子変異情報が臨床の現場にうまく還元できる可能性を示した。さらに今回の研究では、本症における突然死リスク、塞栓症リスク、そして心不全に進展しやすいリスク因子の同定に成功し、肥大型心筋症の診療に極めて重要な知見を発信することができた。

Report

(6 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (39 results)

All 2020 2019 2018 2017 2016

All Journal Article (12 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 12 results,  Open Access: 12 results) Presentation (19 results) (of which Int'l Joint Research: 6 results,  Invited: 8 results) Book (8 results)

  • [Journal Article] Lifelong Clinical Impact of the Presence of Sarcomere Gene Mutation in Japanese Patients With Hypertrophic Cardiomyopathy2020

    • Author(s)
      Nakashima Y, Kubo T, Sugiuta K, Ochi Y, Takahashi A, Baba Y, Hirota T, Yamasaki N, Kimura A, Doi YL, Kitaoka H.
    • Journal Title

      Circulation Journal

      Volume: 84 Issue: 10 Pages: 1846-1853

    • DOI

      10.1253/circj.CJ-20-0027

    • NAID

      130007907598

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2020-09-25
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sudden cardiac death-related events of hypertrophic cardiomyopathy in a regional Japanese cohort -Results from Kochi RYOMA Study.2020

    • Author(s)
      Kubo T, Baba Y, Ochi Y, Takahashi A, Hirota T, Yamasaki N, Hamashige N, Yamamoto K, Kondo F, Bando K, Yamada E, Furuno T, Yabe T, Doi YL, Kitaoka H.
    • Journal Title

      Circ Rep

      Volume: 2 Issue: 8 Pages: 433-439

    • DOI

      10.1253/circrep.cr-20-0056

    • NAID

      130007885736

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Elevation of high-sensitivity cardiac troponin T and left ventricular remodelling in hypertrophic cardiomyopathy.2020

    • Author(s)
      Kubo T, Ochi Y, Baba Y, Sugiura K, Takahashi A, Hirota T, Yamanaka S, Yamasaki N, Doi YL, Kitaoka H.
    • Journal Title

      ESC Heart Fail

      Volume: 7 Issue: 6 Pages: 3593-3600

    • DOI

      10.1002/ehf2.12852

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hypertrophic cardiomyopathy - A heterogeneous and lifelong disease in the real world.2020

    • Author(s)
      Kitaoka H, Kubo T, Doi YL
    • Journal Title

      Circ J

      Volume: 84 Issue: 8 Pages: 1218-1226

    • DOI

      10.1253/circj.cj-20-0524

    • NAID

      130007879387

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Clinical Profile of Thromboembolic Events in Patients With Hypertrophic Cardiomyopathy in a Regional Japanese Cohort ― Results From Kochi RYOMA Study ―2019

    • Author(s)
      Hirota T, Kubo T, Baba Y, Ochi Y, Takahashi A, Yamasaki N, Hamashige N, Yamamoto K, Kondo F, Bando K, Yamada E, Furuno T, Yabe T, Doi YL, Kitaoka H.
    • Journal Title

      Circulation Journal

      Volume: 83 Issue: 8 Pages: 1747-1754

    • DOI

      10.1253/circj.CJ-19-0186

    • NAID

      130007683016

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2019-07-25
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of a Novel Risk Prediction Model for Sudden Cardiac Death in Childhood Hypertrophic Cardiomyopathy (HCM Risk-Kids)2019

    • Author(s)
      Norrish G, Ding T, Field E, Olivotto I, Limongelli G, Toru-Kubo J, et al.
    • Journal Title

      JAMA Cardiology

      Volume: 4 Issue: 9 Pages: 918-927

    • DOI

      10.1001/jamacardio.2019.2861

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Short- and Long-Term Outcomes of Patients With Hypertrophic Cardiomyopathy After Noncardiac Surgery: A Single-Center Retrospective Study.2019

    • Author(s)
      Yatabe T, Kubo T, Kitaoka H, Yokoyama M.
    • Journal Title

      J Cardiothorac Vasc Anesth.

      Volume: 33 Issue: 1 Pages: 109-114

    • DOI

      10.1053/j.jvca.2018.03.004

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Patients’ Characteristics and Clinical Course of Hypertrophic Cardiomyopathy in a Regional Japanese Cohort ― Results From Kochi RYOMA Study ―2018

    • Author(s)
      Kubo T, Hirota T, Baba Y, Ochi Y, Takahashi A, Yamasaki N, Hamashige N, Yamamoto K, Kondo F, Bando K, Yamada E, Furuno T, Yabe T, Doi YL, Kitaoka H.
    • Journal Title

      Circulation Journal

      Volume: 82 Issue: 3 Pages: 824-830

    • DOI

      10.1253/circj.CJ-17-0845

    • NAID

      130006394496

    • ISSN
      1346-9843, 1347-4820
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] International External Validation Study of the 2014 European Society of Cardiology Guidelines on Sudden Cardiac Death Prevention in Hypertrophic Cardiomyopathy (EVIDENCE-HCM).2018

    • Author(s)
      O'Mahony C, Jichi F, Ommen SR, Christiaans I, Cecchi F, Olivotto I, Kitaoka H, Gotsman I, Carr-White G, Mogensen J, Antoniades L, Mohiddin SA, Maurer MS, Tang HC, Geske JB, Siontis KC, Mahmoud KD, Vermeer A, Wilde A, Favalli V, Guttmann OP, Gallego-Delgado M, Dominguez F, Tanini I, Kubo T, Elliott PM.
    • Journal Title

      Circulation

      Volume: 137 Issue: 10 Pages: 1015-1023

    • DOI

      10.1161/circulationaha.117.030437

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Imaging of Left Ventricular Hypertrophy: a Practical Utility for Differential Diagnosis and Assessment of Disease Severity.2017

    • Author(s)
      Kubo T, Kitaoka H.
    • Journal Title

      Curr Cardiol Rep

      Volume: 19 Issue: 8 Pages: 65-65

    • DOI

      10.1007/s11886-017-0875-5

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prognostic Significance of Non-Dilated Left Ventricular Size and Mitral Regurgitation in Patients With Dilated Phase of Hypertrophic Cardiomyopathy2017

    • Author(s)
      Kubo T, Baba Y, Hirota T, Tanioka K, Yamasaki N, Doi YL, Kitaoka H.
    • Journal Title

      International Heart Journal

      Volume: 58 Issue: 1 Pages: 63-68

    • DOI

      10.1536/ihj.16-109

    • NAID

      130005330354

    • ISSN
      1349-2365, 1349-3299
    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prevalence and clinical features of Fabry disease in Japanese male patients with diagnosis of hypertrophic cardiomyopathy.2017

    • Author(s)
      Kubo T, Ochi Y, Baba Y, Hirota T, Tanioka K, Yamasaki N, Yoshimitsu M, Higuchi K, Takenaka T, Nakajima K, Togawa T, Tsukimura T, Sano S, Tei C, Sakuraba H, Kitaoka H.
    • Journal Title

      J Cardiol.

      Volume: 69 Issue: 1 Pages: 302-307

    • DOI

      10.1016/j.jjcc.2016.05.014

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Prognostic impact of atrial fibrillation in patients with hypertrophic cardiomyopathy in a community-based Japanese cohort: Results from Kochi RYOMA Study2020

    • Author(s)
      Toru Kubo
    • Organizer
      ESC Congress 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Epidemiologic, genetic, and clinical features in Japanese HCM patients2020

    • Author(s)
      久保亨
    • Organizer
      JCS2020 第84回日本循環器学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 心尖部肥大型心筋症の遺伝子解析:pure-apical formとdistal-dominant formの違い2020

    • Author(s)
      久保亨
    • Organizer
      日本人類遺伝学会第65回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 肥大型心筋症における遺伝子解析への期待と課題2019

    • Author(s)
      久保亨
    • Organizer
      第67回日本心臓病学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 肥大心の治療2019

    • Author(s)
      久保亨
    • Organizer
      第67回日本心臓病学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 臨床的観点からの心筋症の遺伝子診断の意義と現状2019

    • Author(s)
      久保亨
    • Organizer
      第23回日本心不全学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 肥大型心筋症患者の突然死予防2019

    • Author(s)
      久保亨
    • Organizer
      第23回日本心不全学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Sudden cardiac death relevant events of hypertrophic cardiomyopathy in a community-based Japanese cohort: Results from Kochi RYOMA Study.2018

    • Author(s)
      Toru Kubo
    • Organizer
      European Society of Cardiology Congress 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Genetic analysis of hypertrophic cardiomyopathy with apical phenotype: comparison of pure-apical form and distal-dominant form.2018

    • Author(s)
      Toru Kubo
    • Organizer
      European Society of Cardiology Congress 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 同定された genetic variant のpathogenicity を考える2018

    • Author(s)
      久保亨
    • Organizer
      第22回日本心不全学会学術集会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Genotype and Phenotype of Hypertrophic Cardiomyopathy2018

    • Author(s)
      Toru Kubo
    • Organizer
      ACC18, 67th Annual Scientific Session & Expo
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Management of Hypertrophic Cardiomyopathy in Lifelong Cardiology2018

    • Author(s)
      久保亨
    • Organizer
      The 82st Annual Scientific Meeting of The Japanese Circulation Society
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Genetic Basis and Clinical Significance of Hypertrophic Cardiomyopathy2018

    • Author(s)
      Toru Kubo
    • Organizer
      The 82st Annual Scientific Meeting of The Japanese Circulation Society
    • Related Report
      2017 Research-status Report
  • [Presentation] Clinical Course and Natural History of Hypertrophic Cardiomyopathy2017

    • Author(s)
      Toru Kubo
    • Organizer
      JCS2017 - 第81回日本循環器学会学術集会
    • Place of Presentation
      石川県立音楽堂他(石川県金沢市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Fabry disease and its cardiac involvement2017

    • Author(s)
      久保亨
    • Organizer
      JCS2017 - 第81回日本循環器学会学術集会
    • Place of Presentation
      石川県立音楽堂他(石川県金沢市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] An elevated serum concentration of high-sensitivity cardiac troponin T predicts progression into end-stage phase of hypertrophic cardiomyopathy2017

    • Author(s)
      Toru Kubo
    • Organizer
      2017 AHA Scientific Sessions
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 地域在住肥大型心筋症患者の突然死関連因子の同定高知県心筋症ネットワーク ~Kochi RYOMA Study~2017

    • Author(s)
      久保亨
    • Organizer
      第65回日本心臓病学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 肥大型心筋症における拡張相への進展因子の検討2016

    • Author(s)
      久保亨
    • Organizer
      第64回日本心臓病学会学術集会
    • Place of Presentation
      東京国際フォーラム(東京都千代田区)
    • Year and Date
      2016-09-23
    • Related Report
      2016 Research-status Report
  • [Presentation] Epidemiology and clinical profile of hypertrophic cardiomyopathy in an unselected regional Japanese cohort: Results from Kochi RYOMA Study2016

    • Author(s)
      Toru Kubo
    • Organizer
      European Society of Cardiology (ESC) Congress 2016
    • Place of Presentation
      Rome (Italy)
    • Year and Date
      2016-08-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Book] 循環器ジャーナル基礎編2020

    • Author(s)
      久保亨
    • Total Pages
      4
    • Publisher
      医学書院
    • Related Report
      2020 Annual Research Report
  • [Book] 循環器最新ガイドライン2021-20222020

    • Author(s)
      久保亨
    • Total Pages
      7
    • Publisher
      総合医学社
    • Related Report
      2020 Annual Research Report
  • [Book] 循環器領域25の疑問2020

    • Author(s)
      久保亨
    • Total Pages
      10
    • Publisher
      日本医事新報社
    • Related Report
      2020 Annual Research Report
  • [Book] 別冊・医学のあゆみ 遺伝性心血管疾患のすべて2020

    • Author(s)
      久保亨
    • Total Pages
      7
    • Publisher
      医歯薬出版株式会社
    • Related Report
      2019 Research-status Report
  • [Book] U40世代が描く心不全診療の現状と未来2020

    • Author(s)
      久保亨
    • Total Pages
      10
    • Publisher
      医学書院
    • Related Report
      2019 Research-status Report
  • [Book] 新しい臨床を開拓するための分子循環器病学2019

    • Author(s)
      久保亨
    • Total Pages
      7
    • Publisher
      南山堂
    • Related Report
      2019 Research-status Report
  • [Book] 心不全のセット検査2019

    • Author(s)
      久保亨
    • Total Pages
      11
    • Publisher
      株式会社メジカルビュー社
    • Related Report
      2019 Research-status Report
  • [Book] Heart View 心筋症のいまを識る2019

    • Author(s)
      久保亨
    • Total Pages
      5
    • Publisher
      株式会社メジカルビュー社
    • Related Report
      2019 Research-status Report

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Published: 2016-04-21   Modified: 2022-01-27  

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