Sequential CAR-T Cells Therapy for CD5/CD7 Positive T-cell Acute Lymphoblastic Leukemia and Lymphoblastic Lymphoma Using CD5/CD7-Specific CAR-T Cells (BAH246)

November 10, 2024 updated by: Essen Biotech

This is an Open, Single-arm, Clinical Study to Evaluate the Efficacy and Safety of Anti-CD7/CD5 CAR-T Cells in the Treatment of Relapsed or Refractory T-cell Acute Lymphoblastic Leukemia (T-ALL), ETP-ALL, and Lymphoblastic Lymphoma (TLBL).

Chimeric antigen receptor (CAR)-modified T cells targeted against CD19 have demonstrated unprecedented successes in treating patients with hematopoietic and lymphoid malignancies. Besides CD19, many other molecules such as CD22, CD30,BCMA,CD123, etc. may be the potential to develop the corresponding CAR-T cells to treat patients whose tumors express those markers. In this study, investigators will evaluate the safety and efficacy of Sequential CAR-T Cells Targeting CD5/CD7 in patients with patients with relapsed or refractory T-ALL/LBL/ETP-ALL. The primary goal is safety assessment including cytokine storm response and any other adverse effects. In addition, disease status after treatment will also be evaluated.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Acute lymphoblast leukemia (T-ALL) is a neoplastic lymphoid leukemia characterized by the proliferation of immature precursor T cells. The combined chemotherapy has significantly improved the prognosis of T-acute lymphoblast leukemia/lymphoma. However, once the disease appears to be relapsed/refractory, there are limited treatment options, and the overall prognosis is extremely poor. Therefore, exploring safe and effective treatments is a critical unmet medical need. The patients will receive Sequential CAR-T Cells Targeting CD5/CD7 to examine the safety and, possibly the efficacy of CD5 CAR T-Cells in CD5+ CD7+ relapsed or refractory acute leukemia.

Study Type

Interventional

Enrollment (Estimated)

60

Phase

  • Phase 2
  • Phase 1

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 Locations

  • China
    • Beijing
      • Beijing, Beijing, China, 086-373

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:

  • Signed written informed consent; Patients volunteer to participate in the clinical trial;
  • Diagnosis is mainly based on the World Health Organization (WHO) 2008;
  • Complete remission cannot be achieved after induction therapy; recurrence occurs after completion remission; the burden of leukemic blasts in the peripheral blood or bone marrow is greater than 5%;
  • Leukemic blast cells express CD7/CD5 (CD7 OR CD5 positive by flow cytometry or immunohistochemistry ≥70%);
  • The expected survival period is greater than 12 weeks;
  • ECOG score ≤2;
  • Age 2-60 years old;
  • HGB≥70g/L (can be transfused);
  • Total bilirubin does not exceed 3 times the upper limit of normal value, and AST and ALT do not exceed 5 times the upper limit of normal value.

Exclusion Criteria:

  • Patients declining to consent for treatment
  • Prior solid organ transplantation
  • One of the following cardiac issues: atrial fibrillation; myocardial infarction within the past 12 months; prolonged QT syndrome or secondary QT prolongation; clinically significant pericardial effusion; cardiac insufficiency NYHA (New York Heart Association) III or IV;
  • History of severe pulmonary dysfunction diseases;
  • Severe infection or persistent infection cannot be effectively controlled;
  • Severe autoimmune disease or congenital immunodeficiency;
  • Active hepatitis;
  • Human immunodeficiency virus (HIV) infection;
  • Clinically significant viral infections, or uncontrollable viral reactivation, including EBV (Epstein-Barr virus).

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: Sequential CAR-T Cells Targeting (CD5/CD7 CAR T cells, chemotherapy)
Patients will be administered fludarabine phosphate intravenously (IV) over a 30-minute period on days -4 to -2. Additionally, cyclophosphamide will be administered intravenously (IV) over 60 minutes on day -2. Subsequently, patients will receive CD5/CD7 CAR T cells intravenously (IV) over a duration of 10-20 minutes on day 0. Patients who exhibit positive responses to the initial dose of CD5/CD7 CAR T cells, do not experience unacceptable side effects, and have a sufficient quantity of cells available may be eligible to receive 2 or 3 additional doses of CD5/CD7 CAR T cells.
Biological: CD5/CD7 CAR-T

The intervention in this clinical trial involves a novel approach using CD5/CD7 Chimeric Antigen Receptor T (CAR T) cells combined with chemotherapy. The goal is to assess safety and efficacy in patients with specific hematologic malignancies.

Treatment Regimen:

Patients in the trial will undergo the following regimen:

Fludarabine Phosphate (Days -4 to -2): IV administration of fludarabine phosphate over 30 minutes on days -4 to -2. It's part of the preparatory regimen to enhance the body's response to CAR T-cell therapy.

Cyclophosphamide (Day -2): IV cyclophosphamide over 60 minutes on day -2.

CD5/CD7 Chimeric Antigen Receptor T Cells (Day 0): IV administration of investigational therapy, CD5/CD7 CAR T cells, over 10-20 minutes on day 0.

Additional Doses: Eligible patients responding well to the initial CD5/CD7 CAR-T cell infusion without unacceptable side effects and sufficient CAR-T cell availability may receive 2 or 3 additional doses.

Other Names:
  • EB-BH2026

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The number and incidence of adverse events after CD7/CD5 CAR infusion.
Time Frame: 28 days
Evaluation of all possible adverse reactions, including the number, incidence, and severity of symptoms such as cytokine release syndromes and neurotoxicity within 3 months after CAR-T infusion
28 days
Disease response to CD7/CD5 CAR T cells
Time Frame: 1 year
The disease response to CD7/CD5 CAR T cells is evaluated by bone marrow biopsy and aspirate within 1 year after CAR infusion. The proportion of subjects receiving CD7/CD5 CAR T infusion to 1) morphological remission (blasts <5%): 2) flow cytometry analysis was blast negative, and 3) molecular biological remission (if applicable).
1 year

Collaborators and Investigators

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

Sponsor

Essen Biotech

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)

July 10, 2024

Primary Completion (Estimated)

December 10, 2025

Study Completion (Estimated)

December 28, 2026

Study Registration Dates

First Submitted

May 14, 2024

First Submitted That Met QC Criteria

May 14, 2024

First Posted (Actual)

May 17, 2024

Study Record Updates

Last Update Posted (Estimated)

November 12, 2024

Last Update Submitted That Met QC Criteria

November 10, 2024

Last Verified

November 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ESBI202496

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

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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