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Development of a new treatment strategy for HER2-alterated lung cancer

Research Project

Project/Area Number 19K09285
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55040:Respiratory surgery-related
Research InstitutionKindai University

Principal Investigator

Soh Junichi  近畿大学, 医学部, 教授 (90559890)

Co-Investigator(Kenkyū-buntansha) 冨田 秀太  岡山大学, 大学病院, 准教授 (10372111)
豊岡 伸一  岡山大学, 医歯薬学総合研究科, 教授 (30397880)
山本 寛斉  岡山大学, 大学病院, 講師 (40467733)
阪口 政清  岡山大学, 医歯薬学総合研究科, 教授 (70379840)
光冨 徹哉  近畿大学, 医学部, 教授 (70209807)
須田 健一  近畿大学, 医学部, 講師 (30631593)
諏澤 憲  岡山大学, 大学病院, 助教 (90839713)
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: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsHER2 / 肺癌 / 薬剤耐性 / ERBB2 / HER2異常 / 肺がん / 乳がん / 胃がん / HER異常
Outline of Research at the Start

がん遺伝子HER2が活性化している乳がん・胃がんに対してHER2標的療法が保険収載されています。HER2異常を有する肺がんにおける頻度は5%程度であり、年間約8万人の肺がん死亡者数のうち4000人程度にHER2異常が存在する可能性があります。HER2異常肺がんへのHER2標的療法は、先行研究でその有効性が示唆されていますが、肺がんに対するHER2標的療法は適応外であり、対策が遅れています。本研究では、HER2異常肺がんへのHER2標的療法の効果とその獲得耐性の克服を検討することで、HER2異常肺がんに対するプレシジョン・メディシンの確立を目指した基礎的検討を実施します。

Outline of Final Research Achievements

We conducted sensitivity testing and investigated the mechanism of acquired resistance using lung, gastric, and breast cancer cell lines for several HER2-targeting agents, and reported the results in several English papers. In addition, we confirmed the sensitivity of a novel HER inhibitor, Tarloxotinib, and identified a new resistance-related mutation, HER2 exon C805S, involved in resistance using Ba/F3 cells transfected with HER2 mutation, which was reported in an English paper. A new afatinib-sensitive HER2 mutation spectrum identified in the LUX-Lung8 study, which evaluated the efficacy of the EGFR/HER2 inhibitor afatinib in patients with squamous cell lung cancer, was introduced into the Ba/F3 cell line and its pathogenicity and drug sensitivity were investigated and reported in an English paper.

Academic Significance and Societal Importance of the Research Achievements

HER2異常肺癌の頻度は5%程度であるが、HER2異常は複数の癌腫で認められ、HER2標的療法は個別化治療として期待される。HER2異常スペクトル別にHER2標的薬の効果とその獲得耐性の克服を検討することで、HER2異常肺癌に対するプレシジョン・メディシンの確立を目指した基礎的検討を実施した。HER2異常細胞株を用いて、複数のHER2標的薬の効果を検討し、長期暴露による薬剤耐性株や人工的なHER2変異導入細胞株の樹立により、耐性機序の解明とその治療法の開発を行い、複数の報告を行っている。

Report

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

    (6 results)

All 2021 2020 2019

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

  • [Journal Article] In vitro validation study of HER2 and HER4 mutations identified in an ad hoc secondary analysis of the LUX-Lung 8 randomized clinical trial.2021

    • Author(s)
      Hamada A, Suda K, Koga T, Fujino T, Nishino M, Ohara S, Chiba M, Shimoji M, Takemoto T, Soh J, Uchida T, Mitsudomi T.
    • Journal Title

      Lung Cancer

      Volume: 162 Pages: 79-85

    • DOI

      10.1016/j.lungcan.2021.10.014

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Activity and mechanism of acquired resistance to tarloxotinib in HER2 mutant lung cancer: an in vitro study.2021

    • Author(s)
      Koga T, Suda K, Nishino M, Fujino T, Ohara S, Hamada A, Soh J, Tirunagaru V, Vellanki A, Doebele RC, Mitsudomi T.
    • Journal Title

      Translational Lung Cancer Research

      Volume: 10 Issue: 8 Pages: 3659-3670

    • DOI

      10.21037/tlcr-21-216

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] YES1 activation induces acquired resistance to neratinib in HER2 ‐amplified breast and lung cancers2020

    • Author(s)
      Takeda Tatsuaki、Yamamoto Hiromasa、Suzawa Ken、Tomida Shuta、Miyauchi Shunsaku、Araki Kota、Nakata Kentaro、Miura Akihiro、Namba Kei、Shien Kazuhiko、Soh Junichi、Shien Tadahiko、Kitamura Yoshihisa、Sendo Toshiaki、Toyooka Shinichi
    • Journal Title

      Cancer Science

      Volume: 111 Issue: 3 Pages: 849-856

    • DOI

      10.1111/cas.14289

    • NAID

      120006839439

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acquired resistance mechanisms to afatinib in HER2-amplified gastric cancer cells2019

    • Author(s)
      Yoshioka, T. Shien, K. Takeda, T. Takahashi, Y. Kurihara, E. Ogoshi, Y. Namba, K. Torigoe, H. Sato, H. Tomida, S. Yamamoto, H. Soh, J. Fujiwara, T. Toyooka, S.
    • Journal Title

      Cancer Sci

      Volume: 110 Issue: 8 Pages: 2549-2557

    • DOI

      10.1111/cas.14089

    • NAID

      120006816640

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] In Vitro Validation Study for HER2 Mutations in Squamous Cell Carcinoma as a Potential Predictive Factor Identified in Secondary Analysis of the LUX-Lung 8 Trial2020

    • Author(s)
      Akira Hamada, Kenichi Suda, Toshio Fujino, Masaya Nishino, Takamasa Koga, Shuta Ohara, Masato Chiba, Toshiki Takemoto, Junichi Soh, Tetsuya Mitsudomi
    • Organizer
      2020 World Conference on Lung Cancer
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] In Vitro Validation Study for Afatinib Efficacy in Lung Squamous Cell Carcinoma with HER2 Mutations Identified in LUX-Lung 8 Trial2020

    • Author(s)
      Akira Hamada, Kenichi Suda, Toshio Fujino Shuta Ohara, Junichi Soh, Tetsuya Mitsudomi
    • Organizer
      第79回日本癌学会総会
    • Related Report
      2020 Research-status Report

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

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