Salvage Haploidentical HSCT With DLI and Targeted Therapy for R/R AML
Salvage Haploidentical Allogeneic Hematopoietic Stem Cell Transplantation Combined With Post-transplant Relapse Prevention Strategies for Relapsed/Refractory Acute Myeloid Leukemia (AML): A Prospective Observational Study
This is a prospective, single-center, observational study to evaluate the efficacy and safety of salvage haploidentical allogeneic hematopoietic stem cell transplantation (haplo-HSCT) combined with post-transplant relapse prevention strategies in patients with relapsed/refractory acute myeloid leukemia (R/R AML).
Eligible patients are adults aged 18-65 years with active AML (bone marrow blasts >5% or extramedullary disease) and HCT-CI score ≤5. All patients will receive a uniform conditioning regimen consisting of fludarabine, busulfan, and MECCNU, with addition of targeted agents (such as sorafenib, midostaurin, or venetoclax) according to mutation status. Graft-versus-host disease (GVHD) prophylaxis includes reduced-dose ATG (6 mg/kg), FK506, MMF, and basiliximab. Post-transplant maintenance with targeted therapy or azacitidine and prophylactic donor lymphocyte infusion (DLI) will be administered to reduce relapse risk.
The primary endpoints are cumulative incidence of relapse (CIR), overall survival (OS), and progression-free survival (PFS). Secondary endpoints include incidence of acute and chronic GVHD, CMV/EBV reactivation, non-relapse mortality (NRM), and GVHD-free, relapse-free survival. Patients will be followed for 24 months after transplantation. This study aims to explore an optimized transplant strategy to improve long-term survival in this high-risk population.
調査の概要
状態
研究の種類
入学 (推定)
連絡先と場所
研究連絡先
- 名前：wei MD, PhD
- 電話番号：+86 027-85726003
- メール：shiwei076@hust.edu.cn
参加基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- Signed and dated informed consent Willing and able to comply with all study procedures and follow-up Adults aged 18 to 65 years Diagnosis of acute myeloid leukemia (AML) Active disease before transplantation, defined as bone marrow blasts >5% or presence of extramedullary disease HCT-CI (Hematopoietic Cell Transplantation-Comorbidity Index) score ≤5
Exclusion Criteria:
- Bone marrow blasts ≤5% without extramedullary disease before transplantation Age <18 years or >65 years HCT-CI score >5 Patients with other diagnoses besides AML
研究計画
研究はどのように設計されていますか？
デザインの詳細
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
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Salvage Haploidentical HSCT Cohort
Patients with relapsed/refractory acute myeloid leukemia (R/R AML) who have active disease (bone marrow blasts >5% or extramedullary involvement) before transplantation, aged 18-65 years, and HCT-CI score ≤5.
All patients in this single-arm prospective observational cohort will receive salvage haploidentical allogeneic hematopoietic stem cell transplantation (haplo-HSCT) followed by standardized post-transplant relapse prevention strategies.
Participants will be followed for 24 months after transplantation.
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Salvage haploidentical allogeneic hematopoietic stem cell transplantation using a conditioning regimen of Fludarabine (120-180 mg/m²), Busulfan (3-4 mg/kg), and MECCNU 250 mg/m² (intensity adjusted based on prognostic index).
Targeted agents (sorafenib, midostaurin, or venetoclax) are added according to genetic mutations (e.g., FLT3) until stem cell infusion.
GVHD prophylaxis includes ATG 6 mg/kg, tacrolimus (FK506), mycophenolate mofetil (MMF), and basiliximab on day +4.
No MTX or post-transplant cyclophosphamide (PTCY) is used.
Immunosuppressants are tapered within 100 days if no significant GVHD.
Starting from approximately day +30 after transplantation, patients receive mutation-guided targeted therapy (sorafenib 200 mg daily for FLT3/ITD mutation) or azacitidine 75 mg/m² on days 1-3.
Maintenance therapy aims to reduce the risk of relapse.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
時間枠 |
|---|---|
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Cumulative Incidence of Relapse (CIR)
時間枠：Up to 24 months post-transplantation
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Up to 24 months post-transplantation
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Overall Survival (OS)
時間枠：Up to 24 months post-transplantation
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Up to 24 months post-transplantation
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二次結果の測定
結果測定 |
時間枠 |
|---|---|
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Incidence of Acute GVHD (aGVHD)
時間枠：Within 100 days post-transplantation
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Within 100 days post-transplantation
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Incidence of Chronic GVHD (cGVHD)
時間枠：Up to 24 months post-transplantation
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Up to 24 months post-transplantation
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
追加の関連 MeSH 用語
その他の研究ID番号
- [2025]num(0970)
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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