Phase I Clinical Trial of Autologous CD7-CAR T Cell Therapy for High-risk Acute T-cell Leukemia/lymphoma

Phase I Clinical Trial of Autologous CD7-CAR T Cells in the Treatment of High-risk Acute T-cell Leukemia / Lymphoma

This is a phase 1 clinical trial of autologous CD7-CAR T cells in the treatment of high-risk acute T-cell leukemia / lymphoma. Twenty subjects will be enrolled. Subjects will be pretreated with chemotherapy prior to infusion of CAR T cells: about 3 days before cells transfusion, the patients who planned to reinfuse CAR T cells were treated with fluorodarabine 30 mg/m2( body surface area) and cyclophosphamide 250 mg/m2( body surface area) for 3 days. Then this study will be using a 3+3 dose escalation approach from dose 1 (DL-1): 5×105 (±20%) to dose 2 (dl-2): 1×106 (±20%). Below the lowest dose was reinfused at the PI's discretion.

Study Overview

• Status: Completed
• Conditions: T-cell Leukemia; T Cell Lymphoma
• Intervention / Treatment: Biological: chimeric antigen receptor T cell treatment

• Study Type: Interventional
• Enrollment (Actual): 16
• Phase: Phase 1

Contacts and Locations

Study Locations

• China
  • Beijing
    • Beijing, Beijing, China, 100000
      • Beijing Boren Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: No older than 70 years (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

In order to be eligible to participate in this study, an individual must meet all of the following criteria:

1. Diagnosed as a high-risk acute T-cell leukemia / lymphoma patient with complete remission within 3 months and persistent positive of minimal residual disease, expressing tumor surface antigen CD7
2. Refractory or relapsed T-cell acute lymphoblastic leukemia/lymphoma patients with no blasts in peripheral blood by flow cytometry and suspending anti-neoplastic treatment for more than 2 weeks
3. Male or female, aged 0-70 years
4. No serious allergic constitution
5. Eastern Cooperative Oncology Group (ECOG) performance status (Oken et al., 1982) score 0 to 2
6. Have life expectancy of at least 60 days based on investigator's judgement
7. CD7 positive in bone marrow or peripheral blood or immunohistochemistry
8. Candidates aged 8-70 years need to be sufficiently conscious and able to sign the treatment consent form and voluntary consent form. And Pediatric patients under 8 years old could be recruited after signing an informed consent form by a legal surrogate (Guardian)
9. Minimal residual disease was positive after chemotherapy and there were contraindications of allogeneic hematopoietic stem cell transplantation.

Exclusion Criteria:

An individual who meets any of the following criteria will be excluded from participation in this study:

1. Intracranial hypertension or disorder of consciousness
2. Symptomatic heart failure or severe arrhythmia
3. Symptoms of severe respiratory failure
4. Complicated with other types of malignant tumors
5. Diffuse intravascular coagulation
6. Serum creatinine and / or blood urea nitrogen ≥ 1.5 times of the normal value
7. Suffering from septicemia or other uncontrollable infections
8. Patients with uncontrollable diabetes
9. Severe mental disorders
10. Obvious and active intracranial lesions were detected by cranial magnetic resonance imaging (MRI)
11. Have received organ transplantation (excluding hematopoietic stem cell transplantation);
12. Reproductive-aged female patients with positive blood HCG test
13. Screened to be positive of infection of hepatitis (including hepatitis B and C), AIDS or syphilis

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• 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: chimeric antigen receptor T cell treatment

Biological: chimeric antigen receptor T cell treatment; Subjects will be pretreated with chemotherapy prior to infusion of CAR T cells: about 3 days before cells transfusion, the patients who planned to reinfuse CAR T cells were treated with fluorodarabine 30 mg/m2( body surface area) and cyclophosphamide 250 mg/m2( body surface area) for 3 days. Then this study will be using a 3+3 dose escalation approach from dose 1 (DL-1): 5×105 (±20%) to dose 2 (dl-2): 1×106 (±20%). Below the lowest dose was reinfused at the PI's discretion.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
DLT rate	The DLT rate to the CAR-T treatment	21 days

Collaborators and Investigators

• Sponsor: Beijing Boren Hospital

Study record dates

Study Major Dates

• Study Start (Actual): September 14, 2021
• Primary Completion (Actual): September 1, 2023
• Study Completion (Actual): September 1, 2023

Study Registration Dates

• First Submitted: April 8, 2021
• First Submitted That Met QC Criteria: April 8, 2021
• First Posted (Actual): April 12, 2021

Study Record Updates

• Last Update Posted (Estimated): November 14, 2024
• Last Update Submitted That Met QC Criteria: November 12, 2024
• Last Verified: June 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms; Immune System Diseases; Neoplasms by Histologic Type; Hematologic Diseases; Lymphatic Diseases; Lymphoproliferative Disorders; Immunoproliferative Disorders; Leukemia, Lymphoid; Precursor Cell Lymphoblastic Leukemia-Lymphoma; Leukemia; Lymphoma; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma; Leukemia, T-Cell
• Other Study ID Numbers: BRYY-IIT-LCYJ-2021-004

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
• product manufactured in and exported from the U.S.: No