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Prevalence and atypical clinical characteristics of NOTCH3 mutations among patients admitted for acute lacunar infarctions

Research Project

Project/Area Number 19K21321
Project/Area Number (Other) 18H06219 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0902:General internal medicine and related fields
Research InstitutionNational Cardiovascular Center Research Institute

Principal Investigator

Washida Kazuo  国立研究開発法人国立循環器病研究センター, 病院, 医長 (60467488)

Project Period (FY) 2018-08-24 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsCADASIL / CADASIL scale-J / NOTCH3 / R75P mutation / lacunar infarction / R75P遺伝子変異 / ラクナ梗塞 / NOTCH3変異 / R75P変異 / NOTCH3遺伝子
Outline of Research at the Start

本研究はラクナ梗塞患者における N O T C H 3 遺伝子変異の保有率を調べることを主目的とする。代表的な遺伝性脳小血管病である CADASILの原因遺伝子として N O T C H 3 遺伝子が同定されている。我々は従来の CADASIL の概念に当てはまらない脳血管障害、特にラクナ梗塞についても N O T C H 3 遺伝子変異が関与している可能性があるとの仮説を立て、国立循環器病研究センターに入院したラクナ梗 塞患者を対象として N O T C H 3 遺伝子の全エクソーム解析を行い、ラクナ梗塞患者における遺伝的 素因の解明を目指す。

Outline of Final Research Achievements

CADASIL (Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy) is the most common hereditary small vessel disease and reported with frequency of 2-5/100,000. Recently, it has been clarified that some of the patients with NOTCH3 gene mutations show atypical clinical symptoms of CADASIL. Assuming that NOTCH3 gene mutations may be involved in some cases of lacunar infarction, this study was designed to examine the prevalence of NOTCH3 gene mutations in patients who were initially admitted for lacunar infarctions. In patients hospitalized for lacunar infarctions, the prevalence of CADASIL may be higher than previously thought. The NOTCH3 mutation may be underdiagnosed in early-onset lacunar infarctions due to atypical clinical and neuroimaging features of CADASIL. Thus, early detection of underdiagnosed CADASIL patients might improve the prognosis of the patients.

Academic Significance and Societal Importance of the Research Achievements

CADASILはNOTCH3遺伝子変異により生じる代表的な遺伝性脳小血管病である。CADASIL患者では大脳白質病変が徐々に進行し、中年期からラクナ梗塞を繰り返し、徐々に認知症や運動機能障害が進行する。遺伝性脳小血管病では最も頻度の高い疾患で、欧州では10万人あたり4-15人の患者が存在するとされている。しかしながら近年、NOTCH3遺伝子変異が示された症例でも CADASILに典型的な臨床徴候を示さない例が存在することが明らかになってきた。本研究の結果、CADASILが予想以上にラクナ梗塞発症に関与している可能性が示唆された。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Annual Research Report
  • Research Products

    (6 results)

All 2020 2019

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Prevalence and Atypical Clinical Characteristics of NOTCH3 Mutations Among Patients Admitted for Acute Lacunar Infarctions2020

    • Author(s)
      Okada Takashi、Washida Kazuo、Irie Kenichi、Saito Satoshi、Noguchi Michio、Tomita Tsutomu、Koga Masatoshi、Toyoda Kazunori、Okazaki Shuhei、Koizumi Takashi、Mizuta Ikuko、Mizuno Toshiki、Ihara Masafumi
    • Journal Title

      Frontiers in Aging Neuroscience

      Volume: 12 Pages: 130-130

    • DOI

      10.3389/fnagi.2020.00130

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prevalence and atypical clinical characteristics of NOTCH3 mutations among patients admitted for acute lacunar infarctions2020

    • Author(s)
      Okada T, Washida K, Irie K, Saito S, Noguchi M, Tomita T, Koga M, Toyoda K, Okazaki S, Koizumi T, Mizuta I, Mizuno T, Ihara M
    • Journal Title

      Frontier in Aging Neuroscience 2020 in press.

      Volume: in press

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 本邦のラクナ梗塞患者におけるNOTCH3遺伝子変異の保有率と臨床的特徴2020

    • Author(s)
      鷲田 和夫、岡田 敬史、古賀 政利、豊田 一則、岡﨑 周平、小泉 崇、水田 依久子、水野 敏樹、猪原 匡史
    • Organizer
      第39回日本認知症学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Prevalence and atypical clinical characteristics of NOTCH3 mutations among patients admitted for acute lacunar infarctions2019

    • Author(s)
      Washida K
    • Organizer
      The 9th Japan-Korea Joint Stroke Conference (Seoul, Korea)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atypical clinical characteristics of patiants with NOTCH3 mutations initially admitted to a stroke center for acute lacunar infarctions2019

    • Author(s)
      Okada T
    • Organizer
      The 9th Japan-Korea Joint Stroke Conference (Seoul, Korea)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Prevalence and atypical clinical characteristics of NOTCH3 mutations among patients admitted for acute lacunar infarctions2019

    • Author(s)
      Washida K
    • Organizer
      The 2nd Jeju CADASIL symposium (Jeju, Korea).
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2018-08-27   Modified: 2024-03-26  

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