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Multimodality assessment of cardiac sarcoidosis to improve diagnostic strategy

Research Project

Project/Area Number 22K16127
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53020:Cardiology-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Kimi Sato  筑波大学, 医学医療系, 助教 (30823679)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords心臓サルコイドーシス / 心臓MRI / FDG-PET / サルコイドーシス / PET / 心サルコイドーシス / バイオマーカー
Outline of Research at the Start

心臓サルコイドーシスは、致死性不整脈や左室機能障害により重症心不全をきたす予後不良な疾患である。免疫抑制療法により病態の進行抑制が期待できるが、感度の高い疾患特異的な診断指標が存在しないため、従来の画像指標で診断困難な場合の治療介入の遅れが問題となっている。本研究は、心臓MRIの新規指標やmicroRNAなどのバイオマーカー解析を用いて、より疾患特異的な診断指標を確立することを目的とする研究である。

Outline of Final Research Achievements

Sarcoidosis is a multi-system disorder and cardiac involvement is associated with development of fatal ventricular arrhythmia and left ventricular dysfunction, which lead to severe heart failure or death. Detection of cardiac sarcoidosis (CS) is challenging due to the limited sensitivity of endomyocardial biopsy and the lack of applicable guidelines, especially in patients without extracardiac involvement or isolated CS. We evaluated the characteristics of CS using multimodality imaging evaluation such as CMR, FDG-PET CT, and echocardiography. Patients who diagnosed with isolated CS showed worse outcome than those with other organ involvement and associated with worse left ventricular function and lower SUVmax on FDG-PET. Furthermore, patients who developed fatal ventricular arrhythmia were associated with late gadolinium enhancement on CMR and FDG accumulation on FDG-PET predominant to right ventricle.

Academic Significance and Societal Importance of the Research Achievements

心臓サルコイドーシスは、致死性不整脈や左室機能障害により重症心不全をきたす予後不良な疾患である。感度の高い疾患特異的な診断指標が存在しないため、早期診断や積極的治療介入が必要なリスクの高い症例の診断が課題となっている。今回の研究により、心臓MRI、PET検査、心エコーなどの画像指標を統合的に評価することにより、不整脈リスクが高い予後が不良な症例の層別化が可能となることが示唆された。

Report

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

    (2 results)

All 2024 2022

All Journal Article (1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Utility of Updated Japanese Circulation Society Guidelines to Diagnose Isolated Cardiac Sarcoidosis2022

    • Author(s)
      Sato Kimi、Kawamatsu Naoto、Yamamoto Masayoshi、Machino‐Ohtsuka Tomoko、Ishizu Tomoko、Ieda Masaki
    • Journal Title

      Journal of the American Heart Association

      Volume: 11 Issue: 13

    • DOI

      10.1161/jaha.122.025565

    • Related Report
      2022 Research-status Report
  • [Presentation] Association Between Right Bundle Branch Block and Ventricular Arrhythmia in Patients with Cardiac Sarcoidosis.2024

    • Author(s)
      7.Yu Yamada, Kimi Sato, Masayoshi Yamamoto, Takeru Nabeta, Yoshihisa Naruse, Tatsunori Taniguchi, Takeshi Kitai, Kenji Yoshioka, Hidekazu Tanaka, Takahiro Okumura, Yuichi Baba, Yuya Matsue, Yuki Komatsu, Akihiko Nogami, Tomoko Ishizu.
    • Organizer
      第88回日本循環器学会学術集会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2025-01-30  

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