Sequential CAR-T Cells Targeting CD33/CD123 in Patients With Acute Myelocytic Leukemia AML

Acute Myeloid Leukemia Clinical Trial

— BAH244  

Official title:

Sequential CAR-T Cell Infusion Targeting CD33 and CD123 for Refractory/Relapsed Acute Myeloid Leukaemia

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06420063
• Other study ID #: ESBI202495
• Status: Not yet recruiting
• Phase: Phase 1/Phase 2
• Start date: October 10, 2024
• Est. completion date: December 28, 2026

Study information

• Verified date: May 2024
• Source: Essen Biotech
• Contact: JAMAL ALKHAYER
• Phone: +97333799773
• Email: ceo[@]essen-biotech.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is an open, single-arm, clinical study to evaluate the efficacy and safety of chimeric antigen receptor T cell immunotherapy (CAR-T) targeting CD33 or CD123 or both sequentially in the treatment of Acute Myelocytic Leukemia.

Description:

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 have 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 CAR-T targeting CD33/CD123 in patients with Acute Myelocytic Leukemia. 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.

The purpose of this clinical trial is to assess the feasibility, safety, and efficacy of multiple CAR T-cell therapy which combines CAR T cells against AML Cells with CAR T cells targeting CD123 or CD33 in patients with relapsed and refractory AML. The study also aims to learn more about the function of CAR T cells and their persistence in AML patients.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 85
• Est. completion date: December 28, 2026
• Est. primary completion date: December 10, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 6 Years to 90 Years

Eligibility

Inclusion Criteria:

• Subjects with acute myeloid leukemia who voluntarily signed informed consent and met the following criteria:

• Age older than 6 months.

• Confirmed expression of CLL-1, CD123 and/or CD33 in blast AML by immuno-histochemical staining or flow cytometry.

• Karnofsky performance status (KPS) score is higher than 80 and life expectancy > 3 months.

• Adequate bone marrow, liver and renal function as assessed by the following laboratory requirements: cardiac ejection fraction = 50%, oxygen saturation = 90%, creatinine = 2.5 × upper limit of normal, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) = 3 × upper limit of normal, total bilirubin = 2.0mg/dL.

• Hgb=80g/L.

• No cell separation contraindications.

• Abilities to understand and the willingness to provide written informed consent.

Exclusion Criteria:

• Severe illness or medical condition, which would not permit the patient to be managed according to the protocol, including active uncontrolled infection.

• Active bacterial, fungal or viral infection not controlled by adequate treatment.

• Known HIV, hepatitis B virus (HBV) or hepatitis C virus (HCV) infection.

• Pregnant or nursing women may not participate.

• Use of glucocorticoid for systemic therapy within one week prior to entering the trial.

• Patients, in the opinion of investigators, may not be able to comply with the study.

Related Conditions & MeSH terms

• Acute Myeloid Leukemia
• AML
• AML, Adult
• AML, Adult Recurrent
• Leukemia
• Leukemia, Myeloid
• Leukemia, Myeloid, Acute

Intervention

Biological:
• CD123/CD33 CART
The intervention in this clinical trial involves a novel approach using CD22/123-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. CD33/123-Chimeric Antigen Receptor T Cells (Day 0): IV administration of investigational therapy, CD33/123-CAR T cells, over 10-20 minutes on day 0. Additional Doses: Eligible patients responding well to the initial CD33/123 CAR-T cell infusion without unacceptable side effects and sufficient CAR T cell availability may receive 2 or 3 additional doses.

Locations

Country	Name	City	State
China	District one hospital	Shanghai

Sponsors (1)

Lead Sponsor	Collaborator
Essen Biotech

Country where clinical trial is conducted

China, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Incidence and severity of dose-limiting toxicities (DLTs) following chemotherapy preparative regimen and infusion of CD5/CD7 chimeric antigen receptor (CAR) T cells	Will be recorded and graded according to the Common Terminology Criteria for Adverse Events (CTCAE) version 4.03 at three dose levels until the maximum tolerated dose (MTD) is determined.	28 days
Secondary	Rate of successful manufacture and expansion of the CD33/123 chimeric antigen receptor (CAR) T cells	satisfy the targeted dose level and meet the required release specifications outlined in the Certificate of Analysis (COA)	10-14 days