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Determination of Pathogenic Variants in Inherited Arrhythmia Syndromes and the Realization of Personalized Medicine Based on Genetic Information

Research Project

Project/Area Number 21K08075
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionKanazawa University

Principal Investigator

Hayashi Kenshi  金沢大学, 保健学系, 准教授 (00422642)

Co-Investigator(Kenkyū-buntansha) 吉田 昌平  金沢大学, 附属病院, 助教 (30623657)
野村 章洋  金沢大学, 附属病院, 特任准教授 (30707542)
藤野 陽  金沢大学, 保健学系, 教授 (40361993)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords遺伝性不整脈 / 遺伝性心筋症 / 遺伝子バリアント / 網羅的遺伝子解析 / ゼブラフィッシュ / 機能解析 / VUS / 遺伝性不整脈症候群 / 個別化医療
Outline of Research at the Start

遺伝性不整脈と遺伝性心筋症(遺伝性不整脈症候群, IAS)に対し、全エクソン解析あるいは拡大候補遺伝子解析を行う。網羅的遺伝子解析によって見いだされる数多くのVUSに対し、動物培養細胞やゼブラフィッシュを用いて機能解析を行い、その病的意義を明らかにする。不整脈発症機序が不明なバリアントに対して、遺伝子改変ゼブラフィッシュ心筋、患者右室心筋などを用いた網羅的トランスクリプトームシークエンス(RNA-Seq)を行い、統合的に不整脈発症機序を明らかにする。解析結果をもとに治療標的分子を探索・同定し、不整脈に有効な治療薬を探索・開発する。最終的に遺伝情報に基づく個別化医療の実現を目指す。

Outline of Final Research Achievements

A comprehensive genetic analysis was performed using next-generation sequencing on 92 cases of congenital long QT syndrome (LQTS), 73 cases of dilated cardiomyopathy, 162 cases of hypertrophic cardiomyopathy, and 32 cases of early-onset conduction disorders, all of which are significant causes of sudden cardiac death. As a result, pathogenic variants were found in 115 out of 359 cases (32%).
In type 1 LQTS, about 30% of variants of uncertain significance were found in KCNQ1. To clarify their clinical significance, the role of the zebrafish cardiac arrhythmia model was investigated. It was revealed that this model is useful for determining the pathogenicity of loss-of-function mutations.

Academic Significance and Societal Importance of the Research Achievements

我が国の心臓突然死の原疾患の約40%が遺伝性心筋症・不整脈であると考えられる。今回遺伝性心筋症・不整脈症例において約1/3の症例に病的バリアントを見出すことができた。病的意義不明のバリアントの病原性を判断するためにゼブラフィッシュ心臓不整脈モデルが有用と考えられた。バリアントの病的意義を明らかにすることで、バリアント情報に基づいた患者の管理・治療方針の決定が可能になると考えられる。

Report

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

    (33 results)

All 2023 2022 2021

All Journal Article (19 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 18 results,  Open Access: 5 results) Presentation (13 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] The utility of zebrafish cardiac arrhythmia model to predict the pathogenicity of KCNQ1 variants2023

    • Author(s)
      Cui Shihe、Hayashi Kenshi、Nomura Akihiro、et al.
    • Journal Title

      Journal of Molecular and Cellular Cardiology

      Volume: 177 Pages: 50-61

    • DOI

      10.1016/j.yjmcc.2023.03.001

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mechanisms of fever-induced QT prolongation and torsades de pointes in patients with KCNH2 mutation2023

    • Author(s)
      Usuda K, Hayashi K, Nakajima T, Kurata Y, Cui S, Kusayama T, Tsuda T, Tada H, Kato T, Sakata K, Usui S, Fujino N, Tanaka Y, Kaneko Y, Kurabayashi M, Tange S, Saito T, Ohta K, Yamagishi M, Takamura M
    • Journal Title

      Europace

      Volume: 25 Issue: 6

    • DOI

      10.1093/europace/euad161

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prediction of atrioventricular conduction disturbance after ablation of persistent atrial fibrillation2023

    • Author(s)
      Chikata Akio、Kato Takeshi、Usuda Kazuo、Fujita Shuhei、Maruyama Michiro、Otowa Kanichi、Tsuda Toyonobu、Hayashi Kenshi、Takamura Masayuki
    • Journal Title

      Journal of Electrocardiology

      Volume: 79 Pages: 30-34

    • DOI

      10.1016/j.jelectrocard.2023.03.005

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Attainment of the low-density lipoprotein cholesterol treatment target and prognosis of heterozygous familial hypercholesterolemia2023

    • Author(s)
      Tada Hayato、Nomura Akihiro、Nohara Atsushi、Usui Soichiro、Sakata Kenji、Hayashi Kenshi、Fujino Noboru、Takamura Masayuki、Kawashiri Masa-aki
    • Journal Title

      Atherosclerosis

      Volume: 371 Pages: 61-66

    • DOI

      10.1016/j.atherosclerosis.2023.03.005

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Clinical Characteristics, Outcomes, and Risk Factors for Adverse Events in Elderly and Non-Elderly Japanese Patients With Non-Valvular Atrial Fibrillation ― Competing Risk Analysis From the Hokuriku-Plus AF Registry ―2022

    • Author(s)
      Tsuda Toyonobu、Hayashi Kenshi、Kato Takeshi、Usuda Keisuke、Kusayama Takashi、Nomura Akihiro、Tada Hayato、Usui Soichiro、Sakata Kenji、Kawashiri Masa-aki、Fujino Noboru、Yamagishi Masakazu、Takamura Masayuki、for the Hokuriku-Plus AF Registry Investigators
    • Journal Title

      Circulation Reports

      Volume: 4 Issue: 7 Pages: 298-307

    • DOI

      10.1253/circrep.CR-22-0012

    • ISSN
      2434-0790
    • Year and Date
      2022-07-08
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of variants of uncertain significance of LDL receptor on phenotypes of familial hypercholesterolemia2022

    • Author(s)
      Tada Hayato、Kojima Nobuko、Yamagami Kan、Nomura Akihiro、Nohara Atsushi、Usui Soichiro、Sakata Kenji、Hayashi Kenshi、Fujino Noboru、Takamura Masayuki、Kawashiri Masa-aki
    • Journal Title

      Journal of Clinical Lipidology

      Volume: 16 Issue: 6 Pages: 863-869

    • DOI

      10.1016/j.jacl.2022.09.007

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Targeted deep sequencing analyses of long QT syndrome in a Japanese population2022

    • Author(s)
      NagataY、WatanabeR、EichhornC、OhnoS、AibaT、IshikawaT、NakanoY、AizawaY、HayashiKi、MurakoshiN、NakajimaT、YagiharaN、MishimaH、SudoT、HiguchiC、TakahashiA、SekineA、MakiyamaT、TanakaY、WatanabeA、TachibanaM、MoritaH、YoshiuraK-i、TsunodaT、WatanabeH、KurabayashiM、NogamiA、KiharaY、HorieM、ShimizuW、MakitaN、TanakaT
    • Journal Title

      PLOS ONE

      Volume: 17 Issue: 12 Pages: e0277242-e0277242

    • DOI

      10.1371/journal.pone.0277242

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of baseline blood pressure on adverse outcomes in Japanese patients with non-valvular atrial fibrillation: the J-RISK AF2022

    • Author(s)
      Kodani Eitaro、Hayashi Kenshi、et al.
    • Journal Title

      European Heart Journal Open

      Volume: 2 Issue: 6

    • DOI

      10.1093/ehjopen/oeac081

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ablation index-guided high-power vs. moderate-power cavotricuspid isthmus ablation2022

    • Author(s)
      Chikata Akio、Kato Takeshi、Usuda Kazuo、Fujita Shuhei、Maruyama Michiro、Otowa Kanichi、Usuda Keisuke、Kusayama Takashi、Tsuda Toyonobu、Hayashi Kenshi、Takamura Masayuki
    • Journal Title

      Heart and Vessels

      Volume: 38 Issue: 1 Pages: 90-95

    • DOI

      10.1007/s00380-022-02125-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Characterization of baseline clinical factors associated with incident worsening kidney function in patients with non-valvular atrial fibrillation: the Hokuriku-Plus AF Registry2022

    • Author(s)
      Hayashi Kenshi、et al.
    • Journal Title

      Heart and Vessels

      Volume: 38 Issue: 3 Pages: 402-411

    • DOI

      10.1007/s00380-022-02178-w

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] 先天性QT延長症候群における遺伝子診断はどこまで臨床に役立っているか2022

    • Author(s)
      林 研至
    • Journal Title

      循環器内科

      Volume: 91 Pages: 265-272

    • Related Report
      2021 Research-status Report
  • [Journal Article] Association of Lower Urinary Tract Symptoms Based on the International Prostate Symptom Score and Cardiovascular Disease2021

    • Author(s)
      Tanaka Y, Matsuyama S, Tada H, Hayashi K, Takamura M, Kawashiri MA, Passman R, Greenland P.
    • Journal Title

      Circulation Journal

      Volume: 85 Issue: 11 Pages: 2092-2099

    • DOI

      10.1253/circj.CJ-21-0278

    • NAID

      130008107907

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2021-10-25
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Novel Risk Stratification System for Ischemic Stroke in Japanese Patients With Non-Valvular Atrial Fibrillation2021

    • Author(s)
      Okumura K, Tomita H, Nakai M, Kodani E, Akao M, Suzuki S, Hayashi K, Sawano M, Goya M, Yamashita T, Fukuda K, Ogawa H, Tsuda T, Isobe M, Toyoda K, Miyamoto Y, Miyata H, Okamura T, Sasahara Y; J-RISK AF Research Group.
    • Journal Title

      Circulation Journal

      Volume: 85 Issue: 8 Pages: 1254-1262

    • DOI

      10.1253/circj.CJ-20-1075

    • NAID

      130008066730

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2021-07-21
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Torsade de Pointes Due to QT Prolongation after Pulmonary Vein Isolation for Persistent Atrial Fibrillation2021

    • Author(s)
      Chikata A, Kato T, Usuda K, Fujita S, Otowa KI, Maruyama M, Hayashi K, Takamura M.
    • Journal Title

      Internal Medicine

      Volume: 60 Issue: 13 Pages: 2089-2092

    • DOI

      10.2169/internalmedicine.6627-20

    • NAID

      130008060441

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2021-07-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Association between Cardiovascular Health and Incident Atrial Fibrillation in the General Japanese Population Aged ?40 Years2021

    • Author(s)
      Nishikawa Tetsuo、Tanaka Yoshihiro、Tada Hayato、Tsuda Toyonobu、Kato Takeshi、Usui Soichiro、Sakata Kenji、Hayashi Kenshi、Kawashiri Masa-aki、Hashiba Atsushi、Takamura Masayuki
    • Journal Title

      Nutrients

      Volume: 13 Issue: 9 Pages: 3201-3201

    • DOI

      10.3390/nu13093201

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Impact of sinus rhythm maintenance on major adverse cardiac and cerebrovascular events after catheter ablation of atrial fibrillation: insights from AF frontier ablation registry2021

    • Author(s)
      Usuda Keisuke, Kato Takeshi, Tsuda Toyonobu, et al. On behalf of the AF Ablation Frontier Registry
    • Journal Title

      Heart and Vessels

      Volume: 37 Issue: 2 Pages: 327-336

    • DOI

      10.1007/s00380-021-01929-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Functionally validated SCN5A variants allow interpretation of pathogenicity and prediction of lethal events in Brugada syndrome.2021

    • Author(s)
      Ishikawa T, Kimoto H, Mishima H, Yamagata K, Ogata S, Aizawa Y, Hayashi K, Morita H, Nakajima T, Nakano Y, Nagase S, Murakoshi N, Kowase S, Ohkubo K, Aiba T, Morimoto S, Ohno S, Kamakura S, Nogami A, Takagi M, Karakachoff M, Dina C, Schott JJ, Yoshiura KI, Horie M, Shimizu W, Nishimura K, Kusano K, Makita N.
    • Journal Title

      Eur Heart J.

      Volume: 42(29) Issue: 29 Pages: 2854-2863

    • DOI

      10.1093/eurheartj/ehab254

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Does pulmonary vein isolation prolong QT interval?2021

    • Author(s)
      Chikata A, Kato T, Usuda K, Hayashi K, Takamura M.
    • Journal Title

      Europace.

      Volume: 23 Issue: 12 Pages: 2046-2046

    • DOI

      10.1093/europace/euab152

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] First-degree atrioventricular block is significantly associated with incident atrial fibrillation in the population predominantly including participants aged over 60 years.2021

    • Author(s)
      Tanaka Y, Tada H, Hamaya R, Patel RB, Hayashi K, Yamagami K, Hashiba A, Takamura M, Kawashiri MA, Greenland P.
    • Journal Title

      Heart Vessels.

      Volume: 36 Issue: 9 Pages: 1401-1409

    • DOI

      10.1007/s00380-021-01805-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] The utility of zebrafish cardiac arrhythmia model to predict the pathogenicity of KCNQ1 variants.2023

    • Author(s)
      Kenshi Hayashi, Yaowen Deng, Shihe Cui, Isao Kobayashi, Akihiro Nomura, Ryota Teramoto, Keisuke Usuda, Jingjing Kobayashi-Sun, Yuya Tazaki, Ayana Sasaki, Takashi Kusayama, Toyonobu Tsuda, Hayato Tada, Takeshi Kato, Soichiro Usui, Kenji Sakata, Noboru Fujino, Masakazu Yamagishi, and Masayuki Takamura.
    • Organizer
      AHA Scientific sessions
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cellular and Subcellular Mechanisms of Cardiac Arrhythmia.2023

    • Author(s)
      Kenshi Hayashi, Shihe Cui, Isao Kobayashi, Masayuki Takamura. Zebrafish model of long QT syndrome.
    • Organizer
      Asia Pacific Heart Rhythm Society Scientific Session
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mechanisms of fever-induced QT prolongation and torsades de pointes in patient with KCNH2 T613M mutation2023

    • Author(s)
      Keisuke Usuda, Kenshi Hayashi, et al.
    • Organizer
      The 87th Annual Scientific Meeting of the Japanese Circulation Society
    • Related Report
      2022 Research-status Report
  • [Presentation] Response of Skin Sympathetic Nerve Activity by Handgrip Exercise in Patients with Long QT Syndrome Type 1 and Type 22023

    • Author(s)
      Shuhei Iwaisako, Kenshi Hayashi, et al.
    • Organizer
      The 87th Annual Scientific Meeting of the Japanese Circulation Society
    • Related Report
      2022 Research-status Report
  • [Presentation] A case of Danon disease presenting with slowly progressive cardiomyopathy and harboring a novel missense mutation in the lysosome-associated membrane protein type 2 (LAMP-2) gene2023

    • Author(s)
      Yoichiro Nakagawa, Kenshi Hayashi, et al.
    • Organizer
      The 87th Annual Scientific Meeting of the Japanese Circulation Society
    • Related Report
      2022 Research-status Report
  • [Presentation] Utility of in vivo zebrafish cardiac assay to predict the functional impact of KCNQ1 variants2022

    • Author(s)
      Shihe Cui, Kenshi Hayashi, et al.
    • Organizer
      ESC Congress 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Case 1: LQTS_Reassessment of KCNQ1 variant of uncertain significance by additional variant classification approach2022

    • Author(s)
      Kenshi Hayashi, et al
    • Organizer
      APHRS 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Management of inherited long QT syndrome: Impact of fever on QT prolongation and torsades de pointes2022

    • Author(s)
      Kenshi Hayashi, et al
    • Organizer
      APHRS 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Utility of in vivo zebrafish cardiac assay to predict the functional impact of KCNQ1 variants2022

    • Author(s)
      Shihe Cui, Kenshi Hayashi, et al.
    • Organizer
      APHRS 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] A novel SCN5A variant suggested to be pathogenic by functional analysis in sick sinus syndrome2022

    • Author(s)
      Keisuke Usuda, Kenshi Hayashi, et al.
    • Organizer
      The 68th Annual Meeting of the Japanese Heart Rhythm Society
    • Related Report
      2022 Research-status Report
  • [Presentation] Utility of in vivo zebrafish cardiac assay to predict the functional impact of KCNQ1 variants2022

    • Author(s)
      Shihe Cui, Kenshi Hayashi, et al.
    • Organizer
      The 68th Annual Meeting of the Japanese Heart Rhythm Society
    • Related Report
      2022 Research-status Report
  • [Presentation] Impact of functional studies on exome sequence variant interpretation in early-onset cardiac conduction system diseases2021

    • Author(s)
      "Kenshi Hayashi, Ryota Teramoto, Akihiro Nomura, Yoshihiro Asano, Manu Beerens, Yasutaka Kurata, Isao Kobayashi, Noboru Fujino, Hiroshi Furusho, Takeshi Kato, Toyonobu Tsuda, Satoru Niwa, Keisuke Usuda, Shihe Cui, Calum A MacRae, Seiji Takashima, Masakazu Yamagishi, Masa-aki Kawashiri, and Masayuki Takamura
    • Organizer
      The 67th Annual Meeting of the Japanese Heart Rhythm Society, July 1 - July 4, 2021(WEB開催)
    • Related Report
      2021 Research-status Report
  • [Presentation] ゼブラフィッシュを用いたEmery-Dreifuss 型筋ジストロフィーの機能解析2021

    • Author(s)
      林 研至
    • Organizer
      第7回日本心筋症研究会 シンポジウム4 心筋症のゲノム研究最前線 2021年4月17日(WEB開催)
    • Related Report
      2021 Research-status Report
  • [Book] 循環器内科学レビュー2021

    • Author(s)
      林 研至
    • Total Pages
      413
    • Publisher
      総合医学社
    • Related Report
      2021 Research-status Report

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

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