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Predicting the effect of graft-versus-leukemia (GVL) effect for refractory hematological malignancy

Research Project

Project/Area Number 22K15615
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionTokyo Metropolitan Hospital Organization Tokyo Metropolitan Komagome Hospital

Principal Investigator

Najima Yuho  地方独立行政法人東京都立病院機構東京都立駒込病院(臨床研究室), 血液内科, 医長 (80750471)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2024: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords同種造血幹細胞移植 / 移植後再発 / HLA欠失 / 免疫逃避機構 / 次世代シーケンシング(NGS) / 分子モニタリング / クローン進化 / HLA loss / 再発予測 / 次世代シーケンシング / HLA / 白血病 / HLA不一致同種移植 / ハプロ移植 / 非血縁者間同種 / HLA半合致移植 / 移植片対白血病効果 / 微小残存病変 / 急性骨髄性白血病 / 急性リンパ性白血病 / コピー数中立LOH / GVL効果 / 免疫エスケープ
Outline of Research at the Start

近年急速にHLA半合致移植(ハプロ移植)が普及し、100%ハプロドナー候補となる親子間の移植なども可能となり、根治療法である同種移植を実施可能な難治性造血器腫瘍の症例数は増加した。しかし、難治性であるがゆえに移植後再発に至る症例も多く、最大の障壁となっている。実臨床では、複数のハプロ移植ドナー選択肢があり、再移植により長期生存を得る症例も存在する。本研究ではHLA遺伝子欠失などのハプロ移植後の機序を症例ごとに明らかにし、その情報を速やかに臨床医に返却して再移植の選択肢に生かす、というシステムの構築を目指している。極めて予後不良である移植後再発に対する打開策となり得る。

Outline of Final Research Achievements

This study developed a high-sensitivity molecular pipeline using targeted NGS and custom array CGH/SNP to detect HLA gene loss, a key immune escape mechanism in relapse after allogeneic stem cell transplantation for refractory hematologic malignancies. In a single-center retrospective analysis, relapse specimens were assessed to clarify the frequency, timing, and associated factors of HLA loss. The pipeline was established at the laboratory level, but a practical system for timely clinical reporting has not yet been achieved and remains a future challenge. These findings suggest potential applications in post-transplant monitoring, donor lymphocyte infusion, and donor selection for retransplantation. Between FY2022-2025, seven peer-reviewed papers were published (including three directly related to this project) and ten conference presentations were delivered. One related manuscript is currently under major revision in Leukemia Research.

Academic Significance and Societal Importance of the Research Achievements

本研究は、同種造血幹細胞移植後再発の主要機序であるHLA遺伝子喪失に着目し、高感度分子解析系を整備して再発メカニズムの解明に寄与した。得られた知見は移植後モニタリング強化、ドナーリンパ球輸注や再移植ドナー選択の指針改善に資する基盤となる。2022~2025年度に査読付英文論文7報(うち3報は本課題関連)、学会発表10件を通じて成果を発信し、関連論文1報はLeukemia ResearchでMajor Revision中である。これらの成果は安全かつ効果的な移植医療の標準化と予後改善に貢献する。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (17 results)

All 2025 2024 2023

All Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Changes in donor lymphocyte infusion for relapsed patients post-hematopoietic stem cell transplantation: a 30-year single-center experience2025

    • Author(s)
      Uchibori Y、Kurosawa S、Najima Y、Haraguchi K、Sadato D、Hirama C、Sadaga Y、Kondo K、Kato C、Sakai S、Kambara Y、Ouchi F、Shimabukuro M、Jinguji A、Shingai N、Toya T、Shimizu H、Kobayashi T、Harada H、Harada Y、Okuyama Y、Doki N
    • Journal Title

      Frontiers in Immunology

      Volume: 16 Pages: 1521895-1521895

    • DOI

      10.3389/fimmu.2025.1521895

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pre-transplant blinatumomab and/or inotuzumab ozogamicin therapy for relapsed/refractory acute lymphoblastic and B/myeloid mixed phenotype acute leukemia in adults2025

    • Author(s)
      Kaori Kondo
    • Journal Title

      Leukemia Research

      Volume: 153 Pages: 107704-107704

    • DOI

      10.1016/j.leukres.2025.107704

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Azacitidine and gemtuzumab ozogamicin as post-transplant maintenance therapy for high-risk hematologic malignancies2024

    • Author(s)
      Kaito Satoshi、Najima Yuho、Sadato Daichi、Hirama Chizuko、Kishida Yuya、Nagata Akihito、Konishi Tatsuya、Yamada Yuta、Kurosawa Shuhei、Yoshifuji Kota、Shirane Shuichi、Shingai Naoki、Toya Takashi、Shimizu Hiroaki、Haraguchi Kyoko、Kobayashi Takeshi、Harada Hironori、Okuyama Yoshiki、Harada Yuka、Doki Noriko
    • Journal Title

      Bone Marrow Transplantation

      Volume: 59 Issue: 8 Pages: 1169-1175

    • DOI

      10.1038/s41409-024-02311-5

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Case report: Immune pressure on hematopoietic stem cells can drastically expand glycosylphosphatidylinositol-deficient clones in paroxysmal nocturnal hemoglobinuria2024

    • Author(s)
      Shingai Naoki、Mizumaki Hiroki、Najima Yuho、Yamada Yuta、Tran Dung Cao、Haraguchi Kyoko、Toya Takashi、Okuyama Yoshiki、Doki Noriko、Nannya Yasuhito、Ogawa Seishi、Nakao Shinji
    • Journal Title

      Frontiers in Immunology

      Volume: 14 Pages: 1-7

    • DOI

      10.3389/fimmu.2023.1329403

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effectiveness and safety of granulocyte colony-stimulating factor priming regimen for acute myeloid leukemia: A systematic review and meta-analysis of the Clinical Practice Guideline for the use of G-CSF 2022 from the Japan Society of Clinical Oncology2024

    • Author(s)
      Najima Yuho、Maeda Tomoya、Kamiyama Yutaro、Nakao Shinji、et al.
    • Journal Title

      International Journal of Clinical Oncology

      Volume: NA Issue: 7 Pages: 899-910

    • DOI

      10.1007/s10147-023-02461-4

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Overcoming relapse: prophylactic or pre-emptive use of azacitidine or FLT3 inhibitors after allogeneic transplantation for AML or MDS2023

    • Author(s)
      Yuho Najima
    • Journal Title

      International Journal of Hematology

      Volume: NA Issue: 2 Pages: 169-182

    • DOI

      10.1007/s12185-023-03596-w

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Breakthroughs in FLT3-mutated acute myeloid leukemia treatments2023

    • Author(s)
      名島 悠峰
    • Journal Title

      Rinsho Ketsueki

      Volume: 64 Issue: 9 Pages: 932-941

    • DOI

      10.11406/rinketsu.64.932

    • ISSN
      0485-1439, 1882-0824
    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Presentation] 末梢血WT1-mRNAと骨髄NPM1変異によるMRDに乖離が生じたFLT3-ITD変異陽性急性骨髄性白血病の一例(P-077)2025

    • Author(s)
      稲井一貴
    • Organizer
      第47回日本造血・免疫細胞学会総会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 急性骨髄性白血病/骨髄異形成症候群に対して同種移植後に維持療法としてベネトクラクスを使用した20例(O2-10B-4)2024

    • Author(s)
      加藤千賀
    • Organizer
      第86回日本血液学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] QuANTUM-First: FLT3-ITD-specific MRD clearance is associated with improved overall survival(O1-5B-1)2024

    • Author(s)
      名島 悠峰
    • Organizer
      第86回日本血液学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] BMT-CTN1506追加解析:移植後のGilteritinibとFLT3-ITD MRDの意義(O2-10B-1)2024

    • Author(s)
      名島悠峰
    • Organizer
      第86回日本血液学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] クリニカルディベート: 70歳前後の初発FLT3+AMLに対して、DNR/AraC/QUIZAあるいはVEN/AZAいずれを用いるべきか(CD1-1-2)2024

    • Author(s)
      名島悠峰
    • Organizer
      第86回日本血液学会学術集会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 非血縁者間骨髄移植後再発時にレシピエント特異的HLAの欠失を認めた急性骨髄性白血病2024

    • Author(s)
      古城 凱利
    • Organizer
      第46回日本造血・免疫細胞療法学会総会
    • Related Report
      2023 Research-status Report
  • [Presentation] Outcomes after Hematopoietic Cell Transplantation for T-Lineage Acute Lymphoblastic Leukemia and Lymphoma: A Cooperative Study from the Adult Acute Lymphoblastic Leukemia Working Group and the Adult Malignant Lymphoma Working Group of the Japanese Society for Transplantation and Cellular Therapy2024

    • Author(s)
      名島 悠峰
    • Organizer
      第46回日本造血・免疫細胞療法学会総会
    • Related Report
      2023 Research-status Report
  • [Presentation] Outcomes after Hematopoietic Cell Transplantation for T-Lineage Acute Lymphoblastic Leukemia and Lymphoma: A Cooperative Study from the Adult Acute Lymphoblastic Leukemia Working Group and the Adult Malignant Lymphoma Working Group of the Japanese Society for Transplantation and Cellular Therapy2023

    • Author(s)
      Najima Yuho
    • Organizer
      The 65th American Society of Hematology Annual Meeting and Exposition
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Novel Scoring System Using Geriatric Nutritional Risk Index, C-Reactive Protein, and Disease Status Predicts Survival after Second Allogeneic Stem Cell Transplantation2023

    • Author(s)
      Sadaga Yasutaka
    • Organizer
      The 65th American Society of Hematology Annual Meeting and Exposition
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] FLT3変異陽性AML治療の新展開 教育講演 EL2-3-52023

    • Author(s)
      名島 悠峰
    • Organizer
      第85回日本血液学会学術集会
    • Related Report
      2023 Research-status Report
    • Invited

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Published: 2022-04-19   Modified: 2026-01-16  

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