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Establishment of a novel diagnostic method based on the pathogenesis of CLL in Japan

Research Project

Project/Area Number 19K07863
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionNiigata University

Principal Investigator

Takizawa Jun  新潟大学, 医歯学系, 准教授 (70463990)

Co-Investigator(Kenkyū-buntansha) 曽根 博仁  新潟大学, 医歯学系, 教授 (30312846)
大島 孝一  久留米大学, 医学部, 教授 (50203766)
河本 啓介  久留米大学, 医学部, 助教 (60791481)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
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: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsCLL / CLLRSG-01 / LEF1 / IGHV / TP53 / Typical CLL / Atypical CLL / CD13 / CLL-like LPD
Outline of Research at the Start

本邦で希少疾患である慢性リンパ性白血病(CLL)の簡便かつ確実な診断法を確立する。これまで蓄積した本邦の症例データを用いて形態とフローサイトメトリー解析、免疫組織化学を用いた新しい方法を2019年度に確立する。
本邦CLLと欧米CLLにおけるゲノム異常を比較し、本邦CLLの特徴を明らかにするとともに何故本邦でCLL発症が少ないかという原因を突き止め、将来の新規治療法の開発に結びつけたい。

Outline of Final Research Achievements

The results of the prospective CLLRSG-01 study, conducted on Japanese patients with CLL, accumulated 119 patients with CLL and 82 with mature B-cell neoplasms other than CLL. For diagnosis, morphology using naturally air-dried peripheral blood smears and immunophenotypes using flow cytometry are important, but it has been revealed that Japanese patients are more likely to have atypical immunophenotypes than Western patients. All typical patients with a Matutes score of 4 or higher were LEF1 positive by immunohistochemistry using biopsy tissue, and LEF1 immunohistochemistry is useful for diagnosing some atypical immunophenotype patients.

Academic Significance and Societal Importance of the Research Achievements

100例以上の日本人CLL患者を対象とした初めての前方視調査研究(CLLRSG-01研究)の最終解析の結果、欧米に比べ、免疫形質が非典型的な症例が多く、免疫グロブリン重鎖遺伝子変異例が多く、免疫グロブリン遺伝子の種類が異なることが明らかにされた。形態診断に際して、日本の塗抹標本作成方法が独特であり大型細胞として固定されるため、CLL以外の成熟B細胞腫瘍と診断される可能性があり、自然乾燥標本による形態観察が重要であることも明らかになり、今後の実地診療に大変有益な知見が得られたため、学術的・社会的な意義も大きいと考える。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2024 2023 2021 2020 2019

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (4 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Book (2 results)

  • [Journal Article] Characteristics of chronic lymphocytic leukemia in Japan: Comprehensive analysis of the CLLRSG-01 study2024

    • Author(s)
      Takizawa Jun、Suzuki Ritsuro、Izutsu Koji、Kiguchi Toru、Asaoku Hideki、Saburi Yoshio、Masunari Taro、Utsunomiya Atae、Takeuchi Kengo、Nakamura Naoya、Ohshima Koichi、Gruber Michaela、J?ger Ulrich、Aoki Sadao、Suzumiya Junji
    • Journal Title

      International Journal of Hematology

      Volume: Mar 16 Issue: 6 Pages: 38492198-38492198

    • DOI

      10.1007/s12185-024-03741-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Real World Treatment Practices for Chronic Lymphocytic Leukemia in Japan: An Observational Database Research Study (CLIMBER-DBR)2021

    • Author(s)
      Takizawa Jun、Izutsu Koji、Nagai Hirokazu、Fukase Kenjiro、Nakamura Maki、Jinushi Masahisa、Suzumiya Junji
    • Journal Title

      Journal of Clinical and Experimental Hematopathology

      Volume: 61 Issue: 3 Pages: 126-134

    • DOI

      10.3960/jslrt.20044

    • NAID

      130008087351

    • ISSN
      1346-4280, 1880-9952
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Real World Treatment Practices for Mantle Cell Lymphoma in Japan: An Observational Database Research Study (CLIMBER-DBR)2021

    • Author(s)
      Izutsu Koji、Suzumiya Junji、Takizawa Jun、Fukase Kenjiro、Nakamura Maki、Jinushi Masahisa、Nagai Hirokazu
    • Journal Title

      Journal of Clinical and Experimental Hematopathology

      Volume: 61 Issue: 3 Pages: 135-144

    • DOI

      10.3960/jslrt.20056

    • NAID

      130008087346

    • ISSN
      1346-4280, 1880-9952
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 慢性リンパ性白血病とその類縁疾患の予後予測因子2021

    • Author(s)
      瀧澤淳
    • Journal Title

      日本臨牀

      Volume: 79 Pages: 1720-1724

    • Related Report
      2021 Research-status Report
  • [Journal Article] Evolution in the management of chronic lymphocytic leukemia in Japan: should MRD negativity be the goal?2020

    • Author(s)
      Suzumiya Junji、Takizawa Jun
    • Journal Title

      International Journal of Hematology

      Volume: 111 Issue: 5 Pages: 642-656

    • DOI

      10.1007/s12185-020-02867-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinicopathological analysis of splenic red pulp low-grade B-cell lymphoma.2020

    • Author(s)
      Suzuki T, Miyoshi H, Shimono J, Kawamoto K, Arakawa F, Furuta T, Yamada K, Yanagida E, Takeuchi M, Seto M, Sone H, Takizawa J, Ohshima K.
    • Journal Title

      Pathology International

      Volume: 70 Issue: 5 Pages: 280-286

    • DOI

      10.1111/pin.12909

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 慢性リンパ性白血病および類縁疾患の病因・病態と治療2020

    • Author(s)
      瀧澤 淳
    • Journal Title

      日本臨牀 増刊号 造血器腫瘍学(第2 版)

      Volume: 78 Pages: 499-504

    • Related Report
      2020 Research-status Report
  • [Journal Article] A phase II Japanese trial of fludarabine, cyclophosphamide and rituximab for previously untreated chronic lymphocytic leukemia2020

    • Author(s)
      Izutsu Koji、Kinoshita Tomohiro、Takizawa Jun、Fukuhara Suguru、Yamamoto Go、Ohashi Yasuo、Suzumiya Junji、Tobinai Kensei
    • Journal Title

      Japanese Journal of Clinical Oncology

      Volume: 51 Issue: 3 Pages: 408-415

    • DOI

      10.1093/jjco/hyaa215

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Significance of sIL-2R and LD in predicting time to first treatment in Japanese CLL patients with early asymptomatic disease2023

    • Author(s)
      Takizawa Jun、Suzuki Ritsuro、Izutsu Koji、Utsunomiya Atae、Takeuchi Kengo、Nakamura Naoya、Ohshima Koichi、Aoki Sadao、 Suzumiya Junji
    • Organizer
      XX International Workshop on Chronic Lymphocytic Leukemia( iwCLL) 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Prognosis of Chronic Lymphocytic Leukaemia in Japanese Patients: Results from the CLLRSG-01 Study.2021

    • Author(s)
      Jun Takizawa, Ritsuro Suzuki, Go Yamamoto, Toru Kiguchi, Atae Utsunomiya, Hideki Asaoku, Eiichi Ohtsuka, Kengo Takeuchi, Koji Izutsu, Naoya Nakamura, Koichi Ohshima, Sadao Aoki, Junji Suzumiya.
    • Organizer
      XIX iwCLL (International Workshop on CLL).
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 低分子阻害薬(BTK阻害薬,BCL-2阻害薬)を用いたCLLに対する最新治療.2021

    • Author(s)
      瀧澤 淳
    • Organizer
      第61回日本リンパ網内系学会総会.
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Expression of LEF1 in Japanese cases of CLL (CLLRSG-01 study).2019

    • Author(s)
      Takizawa J, Suzuki R, Kawamoto K, Suzuki T, Kiguchi T, Masunari T, Utsunomiya A, Saburi Y, Murakami J, Kitazume K, Suzuki Y, Takeuchi K, Nakamura N, Ohshima K, Suzumiya J
    • Organizer
      XVIII iwCLL (international Workshop on CLL) meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] がん 最新の薬物療法2023-20242023

    • Author(s)
      瀧澤 淳(監修:石岡千加史、編集:関根郁夫、安藤雄一、伊豆津宏二)
    • Total Pages
      280
    • Publisher
      南江堂
    • ISBN
      9784524233717
    • Related Report
      2022 Research-status Report
  • [Book] 新臨床腫瘍学(改訂第6版)2021

    • Author(s)
      日本臨床腫瘍学会
    • Total Pages
      792
    • Publisher
      南江堂
    • ISBN
      9784524227396
    • Related Report
      2021 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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