Prophylactic Intervention for Relapse Prevention Post-Allogeneic Transplantation in Very High-Risk MDS Patients Based on IPSS-M Stratification

Prophylactic Intervention for Relapse Prevention Post-Allogeneic Transplantation in Very High-Risk MDS Patients Based on IPSS-M Stratification: A Single-Arm, Prospective, Single-Center Clinical Study

By collecting interventional clinical data to assess the survival and relapse conditions of patients post-transplantation and comparing them with historical data, the primary study endpoint is the 1-year and 2-year relapse-free survival (RFS) post-transplantation. This includes the time from the start of treatment until the documentation of disease progression (bone marrow smear blast cells > 5% or extramedullary relapse) or death due to any cause, whichever occurs first. This experiment aims to improve the post-transplant survival rates of MDS patients classified as very high risk under the IPSS-M stratification and to explore pathways to prevent relapse.

Study Overview

• Status: Recruiting
• Conditions: Myelodysplastic Syndromes, Adult
• Intervention / Treatment: Drug: Prophylactic Intervention for Relapse Prevention Post-Allogeneic Transplantation

• Study Type: Interventional
• Enrollment (Estimated): 40
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Xianmin Song, MD; Phone Number: +8613501672508; Email: shongxm@139.com

Study Locations

• China
  • Shanghai, China, 200080
    • Recruiting
    • Shanghai General Hospital
    • Contact: Wu Huixian; Phone Number: +86 18621127020; Email: 1011825696@qq.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Age between 18 and 70 years, inclusive, both male and female. Diagnosed with MDS according to WHO criteria and classified as very high-risk by IPSS-M scoring. The patient must have a suitable hematopoietic stem cell donor for allogeneic transplantation: Related donors must be at least 5/10 matched for HLA-A, -B, -C, -DQB1, and -DRB1
2. Unrelated donors must be at least 8/10 matched for HLA-A, -B, -C, -DQB1, and -DRB1. Hematopoietic Cell Transplantation-Comorbidity Index (HCT-CI) score of ≤ 2. ECOG performance status of 0-2. Adequate liver, kidney, cardiac, and pulmonary functions as follows: Serum creatinine ≤ 1.5× upper limit of normal (ULN)
3. Cardiac function: Ejection fraction ≥ 50%
4. Baseline oxygen saturation > 92%
5. Total bilirubin ≤ 1.5× ULN
6. ALT and AST ≤ 2.0× ULN
7. Pulmonary function: DLCO (corrected for hemoglobin) ≥ 40% and FEV1 ≥ 50%. Patients must be capable of understanding and willing to participate in the study, and must sign an informed consent form.

Exclusion Criteria:

1. Failure to proceed with stem cell reinfusion after unsuccessful pre-transplant conditioning. History of previous hematopoietic stem cell transplantation (HSCT). ECOG performance status > 2. Hematopoietic Cell Transplantation-Comorbidity Index (HCT-CI) score ≥ 3. Any unstable systemic disease including, but not limited to: unstable angina, cerebrovascular accident or transient ischemic attack within the past 3 months, myocardial infarction within the past 3 months, congestive heart failure (New York Heart Association [NYHA] class ≥ III), post-pacemaker implantation requiring medication for severe arrhythmias, severe liver, kidney, or metabolic diseases
2. patients with pulmonary arterial hypertension. Active, uncontrolled infection: hemodynamic instability related to infection, new symptoms or signs of worsening infection, radiological evidence of new infectious foci, persistent fever without signs or symptoms that cannot exclude infection. Need for treatment for Grade ≥2 epilepsy, paralysis, aphasia, new cerebral infarction, severe brain trauma, dementia, Parkinson's disease, schizophrenia. HIV infection. Active hepatitis B (HBV) or hepatitis C (HCV) requiring antiviral treatment
3. patients at risk of HBV reactivation, indicated by positive hepatitis B surface antigen or core antibody without antiviral therapy for hepatitis B. Pregnant or breastfeeding women. Men and women of childbearing potential unwilling to use contraception during the treatment and for 12 months post-treatment. Allergic to intervention drugs such as azacitidine, decitabine, or venetoclax.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Intervention Group

Drug: Prophylactic Intervention for Relapse Prevention Post-Allogeneic Transplantation; 1.1 AZA + BCL2 Inhibitor (Preferred Regimen) Subcutaneous injection of azacitidine at 32 mg/m² per day for 5 consecutive days, with a 28-day cycle; BCL2 inhibitor (VEN): 400 mg per day orally for one week (if combined with a CYP450 inhibitor, reduce to 100 mg per day). 1.2 AZA (DEC) + DLI For patients with TP53 mutations or those who do not respond to VEN, subcutaneous injection of azacitidine at 32 mg/m² per day for 5 consecutive days, with a 28-day cycle; decitabine at 5 mg/m² per day for 5 consecutive days, with a 28-day cycle (preferred for those with TP53 mutations). For patients without the option for DLI, regimen 1.1 is recommended. DLI: Begins 3 months post-transplantation, starting with a dose of 1×10^5 CD3+ T lymphocytes for haploidentical transplants, with doses increasing every 4-6 weeks to 5×10^5 CD3+ T lymphocytes, 1×10^6 CD3+, and 5×10^6 CD3+ T lymphocytes; for full-matched transplants, the starting dose is 5×10^5 CD3+ T lymphocytes with dose escalations as above to 1×1

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
RFS：relapse-free survival	1 year
RFS：relapse- free survival	2 year

Secondary Outcome Measures

Outcome Measure	Time Frame
OS：overall survival	1 year
OS：overall survival	2 year

Collaborators and Investigators

• Sponsor: Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

Study record dates

Study Major Dates

• Study Start (Actual): November 12, 2024
• Primary Completion (Estimated): November 12, 2027
• Study Completion (Estimated): November 12, 2028

Study Registration Dates

• First Submitted: September 23, 2024
• First Submitted That Met QC Criteria: September 23, 2024
• First Posted (Actual): September 25, 2024

Study Record Updates

• Last Update Posted (Estimated): November 26, 2024
• Last Update Submitted That Met QC Criteria: November 19, 2024
• Last Verified: November 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Hematologic Diseases; Bone Marrow Diseases; Myelodysplastic Syndromes
• Other Study ID Numbers: SHSYXY-202405-IPSSM-MDS

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No