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Overcome of issues in introduction to medical practice of Circulating tumor DNA monitoring

Research Project

Project/Area Number 19K09224
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionIwate Medical University

Principal Investigator

Endo Fumitaka  岩手医科大学, 医学部, 講師 (70714442)

Co-Investigator(Kenkyū-buntansha) 秋山 有史  岩手医科大学, 医学部, 准教授 (10405798)
西塚 哲  岩手医科大学, 医歯薬総合研究所, 特任教授 (50453311)
岩谷 岳  岩手医科大学, 医学部, 准教授 (70405801)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordscirculating tumor DNA / digital PCR / 消化管癌 / バイオマーカー / 次世代シーケンサー / 食道癌 / 胃癌 / 大腸癌 / ctDNA / Liquid biopsy
Outline of Research at the Start

腫瘍細胞より血中に遊離したDNA (Circulating tumor DNA: ctDNA)は症例特異的バイオマーカーとして期待されているが、癌の種類や再発形式によるctDNAの陽性率の違いや、最適な解析のタイミング、陽性の判定基準など臨床検査としての妥当性・有用性は確定されていない。ctDNA高陽性率の食道癌、低陽性率の胃癌を対象とし、ctDNAモニタリングの臨床導入における課題点を明らかにする。Stage I症例、治療前ctDNA陰性進行癌、再発・再増大時のctDNA陰性維持例、腹膜播種症例など、ctDNA陰性例に焦点をあて、癌の状態により異なるctDNA放出のメカニズムを解明したい。

Outline of Final Research Achievements

In our previous study, we established tumor burden monitoring with ctDNA using next generation sequencer for mutation detection in primary tumors and digital PCR for ctDNA monitoring in blood samples. In this study, we demonstrated that frequent tumor burden monitoring using tumor-specific ctDNA analyzed by dPCR can offer timely treatment outcome information and provide potential opportunities for early intervention and selection of alternate, more effective relapse treatments during the treatment course of patients with esophageal cancer or colorectal cancer or gastric cancer. In addition, our results indicate that the high sensitivity of dPCR is a useful validation of relapse-free status.

Academic Significance and Societal Importance of the Research Achievements

食道癌、大腸癌、胃癌の治療において、dPCRを用いた症例特異的変異を対象としたctDNAモニタリングは、早期再発発見、無再発の確証、正確な治療効果判定、において臨床的妥当性を有する。10%程度の患者でctDNAの検出しにくい病態が存在するが、多数の症例で画像診断や腫瘍マーカーなど既存検査の診断精度を上回っており、ctDNA解析を中心としたがん診療が期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Frequent Tumor Burden Monitoring of Esophageal Squamous Cell Carcinoma With Circulating Tumor DNA Using Individually Designed Digital Polymerase Chain Reaction2021

    • Author(s)
      Iwaya Takeshi、Endo Fumitaka、Takahashi Fumiaki、Tokino Takashi、Sasaki Yasushi、Nishizuka Satoshi S.
    • Journal Title

      Gastroenterology

      Volume: 160 Issue: 1 Pages: 463-465

    • DOI

      10.1053/j.gastro.2020.09.035

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Frequent post-operative monitoring of colorectal cancer using individualised ctDNA validated by multiregional molecular profiling2021

    • Author(s)
      Yaegashi Mizunori、Iwaya Takeshi、Sasaki Noriyuki、Fujita Masashi、Ju Zhenlin、Siwak Doris、Hachiya Tsuyoshi、Sato Kei、Endo Fumitaka、Kimura Toshimoto、Otsuka Koki、Sugimoto Ryo、Sugai Tamotsu、Liotta Lance、Lu Yiling、Mills Gordon B.、Nakagawa Hidewaki、Nishizuka Satoshi S.
    • Journal Title

      British Journal of Cancer

      Volume: 124 Issue: 9 Pages: 1556-1565

    • DOI

      10.1038/s41416-021-01266-4

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Early dynamics of circulating tumor DNA predict chemotherapy responses for patients with esophageal cancer2021

    • Author(s)
      Ryosuke Fujisawa , Takeshi Iwaya, Fumitaka Endo, Masashi Idogawa, Noriyuki Sasaki, Hayato Hiraki, Shoichiro Tange, Tomomi Hirano, Yuka Koizumi , Masakazu Abe, Tomoko Takahashi, Mizunori Yaegashi , Yuji Akiyama, Mari Masuda, Akira Sasaki, Fumiaki Takahashi, Yasushi Sasaki, Takashi Tokino, Satoshi S Nishizuka
    • Journal Title

      Carcinogenesis

      Volume: 42(10) Issue: 10 Pages: 1239-1249

    • DOI

      10.1093/carcin/bgab088

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Nivolumab投与後Hyper progression diseaseを呈した食道癌の一症例2022

    • Author(s)
      遠藤 史隆、岩谷 岳、秋山 有史、馬場 誠朗、二階 春香、木村 祐輔、佐々木 章、板持 広明
    • Organizer
      日本食道学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Circulating tumor DNAの初期変動を用いた食道癌化学療法効果予測に関する検討2021

    • Author(s)
      藤澤 良介, 岩谷 岳, 遠藤 史隆, 佐々木 教之, 二階 春香, 馬場 誠朗, 秋山 有史, 開 勇人, 小泉 優香, 阿部 正和, 片桐 弘勝, 木村 聡元, 大塚 幸喜, 井戸川 雅史, 新田 浩幸, 佐々木 章, 佐々木 泰史, 時野 隆至, 西塚 哲
    • Organizer
      日本外科学会定期学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 食道癌治療後の肺転移に対して外科的切除術を施行した症例の治療成績2020

    • Author(s)
      遠藤 史隆
    • Organizer
      日本外科学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 進行胃癌の腫瘍出血に対する緩和的照射療法の有用性の検討2020

    • Author(s)
      遠藤 史隆
    • Organizer
      日本外科系連合学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 食道扁平上皮癌患者におけるCirculating tumor DNAと既存検査の比較2019

    • Author(s)
      遠藤 史隆
    • Organizer
      第119回 日本外科学会学術総会
    • Related Report
      2019 Research-status Report
  • [Presentation] Investigation of operative outcomes of esophagectomy for esophageal cancer in elderly patients2019

    • Author(s)
      遠藤 史隆
    • Organizer
      World Congress of Surgery
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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