Intensive Conditioning withTHI/Bu/Flu/Ara-C in Allo-HSCT for Myeloid Malignancies With Extramedullary Involvement

NCT ID: NCT06111612

Last Updated: 2024-07-22

Basic Information

• Recruitment Status: RECRUITING
• Total Enrollment: 50 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2024-01-20
• Study Completion Date: 2027-01-01

Brief Summary

This study is a multicenter, single-arm, prospective phase II clinical trial that evaluates the efficacy and safety of an intensive conditioning regimen with thiotepa combined with busulfan, fludarabine, and cytarabine for allogeneic hematopoietic stem cell transplantation in the treatment of myeloid malignancies with extramedullary involvement. The conditioning regimen includes thiotepa at a dose of 5mg/kg/d from d -9 to d -8 (2 days), fludarabine at 30mg/m2/d from d -7 to d -3 (5 days), cytarabine at 1-1.5g/m2/d from d -7 to d -3 (5 days), and busulfan at 3.2mg/kg/d from d -5 to d -3 (3 days). Conditioning begins on day -9, and donor hematopoietic stem cell infusion is performed on day 0. All patients will undergo bone marrow examination on day 14 and day 28 post-transplant, followed by bone marrow examinations every 30 days within the first year after transplantation, and every 60 days within the second year after transplantation. If disease relapse is suspected during the follow-up period, bone marrow or extramedullary relapse site examinations will be conducted at any time. The primary study endpoints are the 1-year and 2-year progression-free survival (PFS) rates post-transplant. Secondary study endpoints include the incidence of acute graft-versus-host disease (GVHD) within 180 days post-transplant, cumulative relapse rates at 1 year and 2 years post-transplant, 1-year and 2-year overall survival (OS), graft-versus-host disease-free, relapse-free survival (GRFS), non-relapse mortality (NRM), cumulative incidence of chronic GVHD, and the incidence of Cytomegalovirus （CMV）and Epstein-Barr virus（EBV）reactivation within 1 year.

Conditions

Acute Myeloid Leukemia; Myelodysplastic Neoplasm; Chronic Myelomonocytic Leukemia; Myeloid Sarcoma; Extramedullary Myeloid Tumor

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Eligibility Criteria

Inclusion Criteria

1. Age between 18 and less than 55 years, regardless of gender.

2. Criteria for myeloid tumors with extramedullary involvement:

1. AML (Acute Myeloid Leukemia) with at least one extramedullary lesion achieving hematological remission (CR1 or CR2) after induction therapy.

2. MDS (Myelodysplastic Syndrome) with at least one extramedullary lesion and bone marrow blast percentage ≥ 5% achieving hematological CR after treatment; CMML (Chronic Myelomonocytic Leukemia) with at least one extramedullary lesion (diagnosed according to WHO standards) achieving hematological CR after treatment.

3. Control and remission of extramedullary lesions, including those in the central nervous system, testes, skin, and other extramedullary tissues.

4. Granulocytic sarcoma with or without bone marrow involvement, and achieving remission after treatment.

3. Patients must have a suitable hematopoietic stem cell donor:

1. Related donors must have at least 5/10 matches for HLA-A, -B, -C, -DQB1, and - DRB1.

2. Unrelated donors must have at least 8/10 matches for HLA-A, -B, -C, -DQB1, and

• DRB1.

4. Hematopoietic cell transplantation comorbidity index (HCT-CI) score ≤ 2.

5. ECOG (Eastern Cooperative Oncology Group) performance status: 0-2.

6. Adequate liver, kidney, and cardiopulmonary function, meeting the following requirements:

1. Serum creatinine ≤ 1.5x ULN (the upper limit of normal).

2. Cardiac function: Ejection fraction ≥ 50%.

3. Baseline oxygen saturation > 92%.

4. Total bilirubin ≤ 1.5 x ULN; ALT and AST ≤ 2.0 x ULN.

5. Pulmonary function: DLCO (corrected for hemoglobin) ≥ 40% and FEV1 (Forced Expiratory Volume in 1 second) ≥ 50%.

7. Patients must have the ability to understand and be willing to participate in this study and sign an informed consent form.

Exclusion Criteria

1. History of malignancies other than myeloid tumors within the 5 years prior to screening, except for adequately treated in situ cervical cancer, basal cell carcinoma, squamous cell carcinoma of the skin, and curatively treated localized prostate cancer or ductal carcinoma in situ.

2. ECOG > 2.

3. HCT-CI score ≥ 3.

4. Any unstable systemic diseases, including but not limited to unstable angina, recent cerebrovascular accidents or transient ischemic attacks within the 3 months prior to screening, myocardial infarction within the 3 months prior to screening, congestive heart failure (New York Heart Association [NYHA] class ≥ III), severe arrhythmias requiring drug treatment after pacemaker implantation, significant liver, kidney, or metabolic diseases, and pulmonary arterial hypertension.

5. Active, uncontrolled infections, including those associated with hemodynamic instability, new or worsening infection symptoms or signs, new infectious lesions on imaging, or persistent unexplained fever without signs or symptoms of infection.

6. Conditions requiring treatment such as grade 2 or higher seizures, paralysis, aphasia, recent severe cerebral infarction, severe traumatic brain injury, dementia, Parkinson's disease, or schizophrenia.

7. HIV-infected individuals.

8. Active hepatitis B (HBV) or active hepatitis C (HCV) requiring antiviral therapy.

Patients at risk of HBV reactivation, are defined as those who are positive for hepatitis B surface antigen or core antibody without receiving antiviral therapy.

9. Pregnant or breastfeeding women.

10. Fertile males and females unwilling to use contraception during the treatment period and for 12 months after treatment.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 55 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

OTHER

Sponsor Role: lead

Responsible Party

Xianmin Song, MD

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Xianmin Song, MD

Role: PRINCIPAL_INVESTIGATOR

Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

Locations

Shanghai General Hospital

Shanghai, Shanghai Municipality, China

Site Status: RECRUITING

Countries

China

Central Contacts

Xianmin Song, MD

Role: CONTACT

shongxm@139.com

+86 13501672508

Facility Contacts

Xianmin Song, MD

Role: primary

shongxm@139.com

+86 21 63240090 ext. 3175

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Other Identifiers

SHSYXY-202308-THI-BFA

Identifier Type: -

Identifier Source: org_study_id