CAV Regimen for R/R Ph- B-ALL

December 21, 2025 updated by: Sheng-Li Xue, MD, The First Affiliated Hospital of Soochow University

Venetoclax, Cladribine Plus Low-dose Cytarabine for Relapsed/Refractory Philadelphia Chromosome-negative (Ph-) B-cell Acute Lymphoblastic Leukemia (B-ALL): a Single-arm, Multicenter Study

This study aims to investigate the efficacy and safety of cladribine, venetoclax combined with cytarabine and venetoclax (CAV regimen) for relapsed/refractory (R/R) Philadelphia Chromosome-negative (Ph-) B-cell acute lymphoblastic leukemia (B-ALL).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Relapse is common in Ph- B-ALL and a proportion of patients present refractory to initial treatment. Treatments for these patients consist immunotherapy and conventional chemotherapy. The former is too expensive and the latter has a low remission rate. Treatment for R/R Ph- B-ALL still remains a challenge. The efficacy and safety of cladribine, venetoclax and cytarabine (CAV) has not been explored in ALL. Thus investigators design such a clinical trial to investigate the efficacy and safety of CAV regimen for R/R Ph- B-ALL.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
36

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

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

Study Locations

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

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

13 years to 65 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Aged 15-70 years old.
  2. Patients diagnosed with R/R Ph- B-ALL.
  3. Patients with ALL must meet one of the following criteria, A or B: A: Refractory ALL disease was defined as follows: (1) failure to attain CR following exposure to at least 1 courses of standard induction therapy; B: Relapsed ALL disease was defined as follows: (1) reappearance of leukemic blasts in the peripheral blood after CR; or (2) detection of ≥ 5% blasts in the BM not attributable to another cause (e.g., BM regeneration after consolidation therapy); or (3) extramedullary relapse.
  4. ECOG performance status score less than 2.
  5. Expected survival time ≥ 12 weeks.
  6. Patients without serious heart, lung, liver, or kidney dysfunction.
  7. Able to understand and provide informed consent.

Exclusion Criteria:

  1. Patients who are allergic to the study drug or drugs with similar chemical structures.
  2. Pregnant or lactating women, and women of childbearing age who do not want to practice effective methods of contraception.
  3. Active infection.
  4. Active bleeding.
  5. Patients with new thrombosis, embolism, cerebral hemorrhage, or other diseases or a medical history within one year before enrollment.
  6. Patients with mental disorders or other conditions.
  7. Liver function abnormalities (total bilirubin > 1.5 times of the upper limit of the normal range, ALT/AST > 2.5 times of the upper limit of the normal range or patients with liver involvement whose ALT/AST > 1.5 times of the upper limit of the normal range), or renal dysfunction (Ccr<50ml/h).
  8. Patients with a history of clinically significant QTc interval prolongation (male > 450 ms; female > 470 ms), ventricular heart tachycardia and atrial fibrillation, II-degree heart block, myocardial infarction attack within one year before enrollment, and congestive heart failure, and patients with coronary heart disease who have clinical symptoms and requiring drug treatment.
  9. Surgery on the main organs within the past six weeks.
  10. Drug abuse or long-term alcohol abuse that would affect the evaluation results.
  11. Patients who have received organ transplants.
  12. Patients not suitable for the study according to the investigator's assessment.

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

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: CAV regimen
Drug: cladribine, cytarabine,venetoclax
Cladribine 5 mg/m2/day, cytarabine 20mg q12h, venetoclax 100mg d1, 200 d2, 400 mg/day from day 3 to day 21.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Overall response rate (ORR)
Time Frame: ORR assessment is measured on days 21 from the start of CAV regimen
The overall response (completed remission, completed remission with incomplete blood count recovery)
ORR assessment is measured on days 21 from the start of CAV regimen

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Overall Survival (OS)
Time Frame: 2 years
OS is measured from the time of enrollment to 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.
2 years
Progression-Free Survival (PFS)
Time Frame: 2 years
PFS is measured from the time of enrollment to this study to progression or death.
2 years
Adverse events
Time Frame: 1 month
It is evaluated and graded according to CTCAE 5.0.
1 month

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
The First Affiliated Hospital of Soochow University

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
The Second People's Hospital of Huai'an
Jining Medical University
Affiliated Hospital of Nantong University
Suzhou Hospital of Traditional Chinese Medicine
Northern Jiangsu People's Hospital
The First Affiliated Hospital of Bengbu Medical 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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2022

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 12, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 12, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 20, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 29, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 21, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • SZBALL01

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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