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Pathological and molecular analysis for moderately differentiated adenocarcinoma of the stomach

Research Project

Project/Area Number 16K08661
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Human pathology
Research InstitutionJapanese Foundation for Cancer Research

Principal Investigator

Kawachi Hiroshi  公益財団法人がん研究会, 有明病院 病理部, 部長 (20401375)

Co-Investigator(Kenkyū-buntansha) 山本 智理子  公益財団法人がん研究会, がん研究所 病理部, 副部長 (10280629)
小林 真季  公益財団法人がん研究会, がん研究所 病理部, 研究員 (20599972)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords胃癌 / 中分化腺癌 / 病理 / 免疫染色 / EBV / リンパ節転移 / 横這型 / 病理学 / 消化管
Outline of Final Research Achievements

Among tumor groups including predominant moderately differentiated adenocarcinoma, following three groups were mainly evaluated.
(1)Gastric adenocarcinoma with mixed histology group: this group account for 44.5% and the frequency of lymph node metastasis is relatively high compared with other groups. (2)EBV group account for 7.9% and the frequency of lymph node metastasis is significantly higher than non-EBV group. Non-EBV status is an independent risk factor for lymph node metastasis. Moreover, there is no case with lymph node metastasis in the tumors of EBV group without lymphovascular invasion, suggesting that EBV group without lymphovascular invasion can be treated local resection only such as endoscopic submucosal dissection. (3)MSI group account for 7.5% and the frequency of lymph node metastasis is relatively high and there is no significant difference between MSI group and non-MSI group.

Academic Significance and Societal Importance of the Research Achievements

早期胃癌の治療方針を決めるにあたり、高分化、中分化、低分化といった病理組織学的な分化度の判定は現在重要な因子の一つである。ただし、中間的組織像を示す中分化腺癌の判定はしばしば難しく問題となっていた。今回の研究で、中分化腺癌の成分を含む一部の腫瘍群、特にEBV群の場合、分化度の判定を一切行うことなく、脈管侵襲の判定を加えるだけで内視鏡治療の適応が決められる可能性があることがわかった。現在行われている病理組織学的評価に基づく治療方針決定の現状に加え、近年確立されつつある分子分類の要素を臨床応用することが可能でとなれば、個々の患者にとって、より適切な治療方針を選択することに貢献できると期待される。

Report

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

    (10 results)

All 2020 2019 2018 2017 2016

All Journal Article (5 results) (of which Peer Reviewed: 4 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Clinical impact of Epstein‐Barr virus status on the incidence of lymph node metastasis in early gastric cancer2020

    • Author(s)
      Osumi Hiroki、Kawachi Hiroshi、Yoshio Toshiyuki、Fujisaki Junko
    • Journal Title

      Digestive Endoscopy

      Volume: 32 Issue: 3 Pages: 316-322

    • DOI

      10.1111/den.13584

    • NAID

      130007941368

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1. Risk stratification for lymph node metastasis using Epstein-Barr virus status in submucosal invasive (pT1) gastric cancer without lymphovascular invasion: a multicenter observational study.2019

    • Author(s)
      Osumi H, Kawachi H, Murai K, Kusafuka K, Inoue S, Kitamura M, Yoshio T, Kakusima N, Ishihara R, Ono H, Yamamoto N, Sugino T, Nakatsuka S, Ida S, Nunobe S, Bando E, Omori T, Takeuchi K, Fujisaki J
    • Journal Title

      Gastric Cancer

      Volume: - Issue: 6 Pages: 1176-1182

    • DOI

      10.1007/s10120-019-00963-7

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Epstein-Barr virus status is a promising biomarker for endoscopic resection in early gastric cancer: proposal of a novel therapeutic strategy.2019

    • Author(s)
      Osumi H, Kawachi H, Yoshio T, Ida S, Yamamoto N, Horiuchi Y, Ishiyama A, Hirasawa T, Tsuchida T, Hiki N, Takeuchi K, Fujisaki J.
    • Journal Title

      J Gastroenterol

      Volume: - Issue: 9 Pages: 774-783

    • DOI

      10.1007/s00535-019-01562-0

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] 横這型胃癌・手つなぎ型腺管癌2017

    • Author(s)
      河内洋
    • Journal Title

      胃と腸

      Volume: 52 Pages: 702-702

    • Related Report
      2016 Research-status Report
  • [Journal Article] Clinicopathological features of Siewert type II adenocarcinoma: comparison of gastric cardia adenocarcinoma and Barrett's esophageal adenocarcinoma following endoscopic submucosal dissection.2016

    • Author(s)
      Osumi H, Fujisaki J, Omae M, Shimizu T, Yoshio T, Ishiyama A, Hirasawa T, Tsuchida T, Yamamoto Y, Kawachi H, Yamamoto N, Igarashi M.
    • Journal Title

      Gastric Cancer

      Volume: - Issue: 4 Pages: 663-670

    • DOI

      10.1007/s10120-016-0653-x

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed
  • [Presentation] Histopathologic diagnosis and problems in gastric carcinoma with mixed histology2019

    • Author(s)
      Hiroshi Kawachi
    • Organizer
      The 91st Annual Meeting of Japanese Gastric Cancer Association
    • Related Report
      2018 Research-status Report
  • [Presentation] miRNA expression profile of gastric fundic gland-type neoplasm2018

    • Author(s)
      Hiroshi Kawachi
    • Organizer
      11th Joint Meeting of the British Division of the International Academy of Pathology and the Pathological Society of Great Britain & Ireland
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Classification of gastric carcinoma: heterogeneity and recent advances2018

    • Author(s)
      Hiroshi Kawachi
    • Organizer
      The XI Ecuadorian National Congress of Pathology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] miRNA expression profile of gastric fundic gland-type adenocarcinoma2018

    • Author(s)
      小林真季、河内洋、高松学、長野裕子、城間翔、平澤俊明、山本智理子、藤崎順子、石川雄一
    • Organizer
      第90回日本胃癌学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Anastomosing/crawling-type adenocarcinoma of the stomach.2016

    • Author(s)
      Kato Y, Kawachi H, Kobayashi M, Yamamoto N, Ishikawa Y.
    • Organizer
      31th International Congress of the International Association of Pathology and 28th Congress of the European Society of Pathology
    • Place of Presentation
      Clogne, Germany
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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