Venetoclax+Azacytidine+Modified BUCY Conditioning Regimen for Acute Lymphoblastic Leukemia Undergoing Allo-HSCT

Venetoclax (VEN)+Azacytidine (AZA) Followed by Modified BUCY Conditioning Regimen for High Risk or Refractory/Relapsed Acute Lymphoblastic Leukemia Undergoing Allogeneic Hematopoietic Stem Cell Transplantation (Allo-HSCT)

The purpose of this prospective, open-label, single-center study is to evaluate the efficacy and safety of VEN-AZA (venetoclax and azacytidine) followed by modified BUCY (busulfan and cyclophosphamide) as conditioning regimen for high-risk or relapsed/refractory acute lymphoblastic leukemia (ALL) undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT).

Study Overview

Detailed Description

Allogeneic hematopoietic stem cell transplantation (Allo-HSCT) is the only potentially curative therapy for patients with acute lymphoblastic leukemia. However, relapse remains a leading cause for treatment failure after hematopoietic cell transplantation (HCT) in patients, optimization of conditioning regimen can improve prognosis and decrease relapse. Abnormal gene methylation is common in ALL patients. Azacytidine is a DNA methylation transferase inhibitor that can re-express tumor suppressor genes in leukemia cells. Venetoclax is a selective BCL-2 inhibitor, which has antitumor activity against a variety of hematological malignancies. The combination of the two drugs show a synergistic anti-tumor effect. Multiple case reports the efficacy of Venetoclax-based regimens in patients with ALL is encouraging. The objective of this study is to evaluate the feasibility, safety and efficacy of VEN-AZA bridging allogeneic hematopoietic stem cell transplantation in the treatment of high-risk ALL.

Study Type

Interventional

Enrollment (Anticipated)

55

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

  • Name: Depei Wu Wu, MD
  • Phone Number: +86-512-67781851
  • Email: wudepei@163.com

Study Locations

    • Jiangsu
      • Suzhou, Jiangsu, China, 215006
        • Recruiting
        • The First Affiliated Hospital of Soochow University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Age 14 to 65 years;
  2. Diagnosis of high-risk or relapsed/refractory acute lymphoblastic leukemia at the time of transplant.
  3. Must need a bone marrow transplant;
  4. Must have the ability to observe the efficacy and events;
  5. Patient must have ability to understand and willingness to provide written informed consent prior to participation in the study and any related procedures being performed.

Exclusion Criteria:

  1. Age <14 or >65 years;
  2. Uncontrolled bacterial, viral, fungal, or other infection before conditioning regimen;
  3. Pregnant or lactating females;
  4. Current participation in another clinical trial;
  5. Contra-indication to one of the drug of the regimen;
  6. Any other severe concurrent disease, or have a history of serious organ dysfunction or disease involving the heart, kidney, liver or other organ system that may place the patient at undue risk to undergo the agents included in the conditioning regimen

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: VEN+AZA+Modified BUCY

Venetoclax: 200mg/day*7days(It should be combined with triazole antifungal drugs).

Azacytidine: 75mg/ m²/day*7days.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
disease-free survival (DFS)
Time Frame: 3 years after transplantation
It is measured from the time from randomization to the first of relapse or death.
3 years after transplantation
overall survival (OS)
Time Frame: 3 years after transplantation
It is measured from the time of entry into this trial to the date of death from any cause; patients not known to have died at last follow-up are censored on the date they were last known to be alive.
3 years after transplantation

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
veno-occlusive disease (VOD)
Time Frame: 3 years after transplantation
incidence of veno-occlusive disease (VOD) events (refer to modified Seattle Criteria of VOD)
3 years after transplantation
graft-versus-host disease (GvHD)
Time Frame: 3 years after transplantation
incidence and severity of acute (aGvHD) and chronic graft-versus-host disease (cGvHD) (aGvHD refer to Glucksberg Criteria and cGvHD refer to the National Institutes of Health Consensus)
3 years after transplantation
transplant related mortality (TRM)
Time Frame: 3 years after transplantation
cumulative incidence of transplant related mortality
3 years after transplantation
Regimen related toxicity
Time Frame: 3 years after transplantation
Number of participants with regimen related toxicity as assessed by CTCAE v4.0
3 years after transplantation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Chair: Depei Wu Wu, MD, The First Affiliated Hospital of Soochow University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 20, 2022

Primary Completion (Anticipated)

January 20, 2025

Study Completion (Anticipated)

January 20, 2026

Study Registration Dates

First Submitted

February 27, 2023

First Submitted That Met QC Criteria

April 10, 2023

First Posted (Actual)

April 12, 2023

Study Record Updates

Last Update Posted (Actual)

April 12, 2023

Last Update Submitted That Met QC Criteria

April 10, 2023

Last Verified

February 1, 2023

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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