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Investigation of Biomarkers to Predict the Efficacy of Immune Checkpoint Inhibitor Therapy in Renal Cell Carcinoma

Research Project

Project/Area Number 21K16750
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56030:Urology-related
Research InstitutionAkita University

Principal Investigator

Kashima Soki  秋田大学, 医学系研究科, 助教 (50842952)

Project Period (FY) 2021-04-01 – 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 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords腎細胞癌 / 免疫チェックポイント阻害薬 / 腫瘍微小環境 / バイオマーカー / CD8 T細胞 / 制御性T細胞 / 腫瘍免疫 / 抗PD1抗体 / PD-1 / PD-L1
Outline of Research at the Start

これまでに免疫チェックポイント阻害薬の治療効果予測バイオマーカーの探索が行われた結果、腫瘍遺伝子変異量が多い場合と、DNAミスマッチ修復機構のマイクロサテライト不安定性が存在する場合に治療が奏功する可能性が高いことが明らかとなった。一方で、腎細胞癌は、他癌種と比較して既知のバイオマーカー陽性の頻度が低い癌種として知られており、未知の機構の関与が示唆されている。そこで本研究では、臨床情報と腎細胞癌患者検体を用いて、腫瘍因子と宿主因子の双方に対する分子生物学的および免疫学的な解析を行い、既知のマーカー陰性患者におけるICI治療奏功を予測するための新規バイオマーカーを探索する。

Outline of Final Research Achievements

Numerous studies of other solid tumors have investigated predictive biomarkers for ICI response, including tumor mutation burden (TMB) and the presence of microsatellite instability due to defects in DNA mismatch repair genes. While these biomarkers have predictive value in high TMB tumors, they are not associated with ICI efficacy in patients with modest TMB tumors like renal cell carcinoma (RCC). To address these challenges and uncover biomarkers of therapeutic response to ICIs in RCC, we analyzed the tumor microenvironment in treatment-naive tissue, and paired peripheral blood both pre- and post-ICI treatment. We found that exhausted CD8 T cells showed significant changes in responders (R) versus non-responders (NR), effector cytokines were significantly upregulated in the plasma of R, and Foxp3+ cells were significantly more frequent in pre-treatment specimens of NR. We identified specific molecules and subclusters that could potentially predict the efficacy of ICI therapy in RCC.

Academic Significance and Societal Importance of the Research Achievements

腎癌において、継時的な末梢血単核球細胞の表現型解析・血漿中のマルチプレックスタンパク解析・tissue microarrayによる免疫染色解析を同一患者由来のサンプルで網羅的に行った報告は過去に無く、本研究が初の試みである。我々はこの多面的アプローチにより、腎癌におけるICI治療効果を予測しうる早期バイオマーカーとして新規分子および細胞群を同定した。今後は本研究で同定したバイオマーカーを用いて前向きな検討で早期に免疫チェックポイント阻害薬の治療効果が予測できるかどうか評価することで、現状における腎癌のICI治療効果予測の課題を解決できる可能性を秘めている。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] Yale university(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Update on Biomarkers in Renal Cell Carcinoma2024

    • Author(s)
      Saliby RM, Saad E, Kashima S, Schoenfeld DA, Braun DA.
    • Journal Title

      Am Soc Clin Oncol Educ Book

      Volume: 44 Issue: 2 Pages: 1-10

    • DOI

      10.1200/edbk_430734

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Changing Landscape of Immunotherapy for Advanced Renal Cancer2023

    • Author(s)
      Soki Kashima, David A. Braun
    • Journal Title

      Urologic Clinics of North America

      Volume: 50 Issue: 2 Pages: 335-349

    • DOI

      10.1016/j.ucl.2023.01.012

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] TIGIT as a potential therapeutic target in renal cell carcinoma2023

    • Author(s)
      Kashima S, Soulati HA, Madsen KN, Sadak KE, Wirth L, Hurwitz ME, Kluger HM, Sznol M, Humphrey PA, Adeniran A, Kenney PA, Braun DA.
    • Organizer
      Society for Immunotherapy of Cancer (SITC) 38th Annual Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of an experimental toolkit to assess T cell function in renal cell carcinoma (RCC)2023

    • Author(s)
      Soulati HA*, Kashima S*, Madsen KN, Sadak KE, Kenney PA, Singh D, Hurwitz ME, Kluger HM, Adeniran A, Humphrey PA, Schindler NR, Braun DA.
    • Organizer
      Kidney Cancer Research Sumit 2023 (KCRS23)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 新規癌患者由来マウスモデルを用いた 免疫チェックポイント阻害薬作用機構の網羅的解明と 治療効果予測バイオマーカーの開発2023

    • Author(s)
      蘇武竜太、嘉島相輝、藤山信弘、武田将司、小林瑞貴、山本竜平、奈良健平、沼倉一幸、齋藤満、成田伸太郎、赤松秀輔、井上高光、小林恭、羽渕友則
    • Organizer
      第110回日本泌尿器科学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Identification of biomarkers and development of novel therapeutic targets to overcome resistance to immune checkpoint inhibitor in renal cell carcinoma2023

    • Author(s)
      Ryuta Sobu, Soki Kashima, Nobuhiro Fujiyama, Masashi Takeda, Mizuki Kobayashi, Ryohei Yamamoto, Taketoshi Nara, Kazuyuki Numakura, Mitsuru Saito, Shintaro Narita, Shusuke Akamatsu, Takamitsu Inoue, Takashi Kobayashi, Tomonori Habuchi
    • Organizer
      第110回日本泌尿器科学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Exploring predictive biomarkers for the efficacy of immune checkpoint inhibitors in advanced renal cell carcinoma2023

    • Author(s)
      Ryuta Sobu, Soki Kashima, Nobuhiro Fujiyama, Mizuki Kobayashi, Ryohei Yamamoto, Taketoshi Nara, Kazuyuki Numakura, Mitsuru Saito, Shintaro Narita, Takamitsu Inoue, Tomonori Habuchi
    • Organizer
      第110回日本泌尿器科学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 腎癌に対する免疫チェックポイント阻害薬の 不応性機構の探索と新規治療標的の開発2023

    • Author(s)
      蘇武竜太,嘉島相輝,奈良健平,沼倉一幸,齋藤 満, 成田伸太郎,赤松秀輔,井上高光,小林 恭, 羽渕友則
    • Organizer
      第32回泌尿器科分子・細胞研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Exploration of predictive markers for the efficacy of immune checkpoint inhibitors in metastatic renal cell carcinoma2022

    • Author(s)
      蘇武竜太、嘉島相輝、小林瑞貴、山本竜平、奈良健平、沼倉一幸、齋藤満、成田伸太郎、羽渕友則
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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