This is a multi-center, open-label, non-randomized, phase I/II trial. Patients with refractory or relapsed T-cell malignancies will receive autologous, prior-HSCT donor-derived or new donor-derived CD7 CAR T cells according to their HSCT history, peripheral blood leukemia burden and at their discretion. The primary objective is to learn about the safety of autologous, prior-HSCT donor-derived and new donor-derived CD7 CAR T-cell therapy in patients with refractory or relapsed T-cell acute lymphoblastic leukemia and lymphoma (r/r T-ALL/T-LBL) in phase I and to learn about the efficacy of autologous, prior-HSCT donor-derived and new donor-derived CD7 CAR T-cell therapy in patients with refractory or relapsed T-cell acute lymphoblastic leukemia and lymphoma (r/r T-ALL/T-LBL) in phase II. The primary endpoint is type and incidence of dose limiting toxicity (DLT) within 21 days after CD7 CAR T-cell infusion in phase I and overall response rate (ORR), which includes CR, CRh, CRi, MLFS, aplastic marrow for blood and bone marrow; central nervous system (CNS) remission; CR and PR for lymphomatous extramedullary disease according to National Comprehensive Cancer Network (NCCN) Guidelines Version 3.2023 of Acute Lymphoblastic Leukemia at 3 months (± 1 week) post CD7 CAR T-cell infusion in refractory or relapsed T-cell acute lymphoblastic leukemia/lymphoma (r/r T-ALL/T-LBL) patients treated with CD7 CAR T cells in phase II. A total number of 80 subjects will be enrolled.
CD7-positive refractory or relapsed T-cell malignancies with progression or intolerance after all standard treatments, limited prognosis from currently available treatments and no available treatment options (e.g. HSCT or chemotherapy).
Tumor cells in bone marrow or cerebrospinal fluid are positive for CD7 antigen by flow cytometry or tumour tissue is positive for CD7 by immunohistochemistry (CD7 antigen positivity by flow cytometry: >80% of tumour cells expressing CD7 with a mean fluorescence intensity [MFI] of CD7 similar to that of normal T cells are considered to have fully positive expression; >80% of tumor cells expressing CD7 but with an MFI of CD7 at least 1 log lower than that of normal T cells are considered to have low expression [dim]; tumor cells with a CD7 expression rate between 20-80% are considered to have partial expression; CD7 antigen positivity by pathological immunohistochemistry: >30%);
Male or female, age 1-70 years;
No severe allergic constitution;
Intracranial hypertension or unconscious;
Acute heart failure or severe arrhythmia;
Acute respiratory failure;
Other types of malignant tumors;
Parallel
Autologous CD7 CAR T-cell
DrugPeripheral blood mononuclear cells for the production of CD7 CAR T cells are collected from patients.
Prior-HSCT donor-derived CD7 CAR T-cell
DrugPeripheral blood mononuclear cells for the production of CD7 CAR T cells are collected from prior-HSCT donors.
New donor-derived CD7 CAR T-cell
DrugPeripheral blood mononuclear cells for the production of CD7 CAR T cells are collected from new donors.
Dose-Limiting Toxicity (DLT) in phase I
Type and incidence of dose-limiting toxicity (DLT) within 21 days after CD7 CAR T-cell infusion
Overall Response Rate (ORR) in phase II
Overall response rate (ORR), which includes CR, CRh, CRi, MLFS, aplastic marrow for blood and bone marrow; central nervous system (CNS) remission; CR and PR for lymphomatous extramedullary disease per National Comprehensive Cancer Network (NCCN) Guidelines Version 3.2023 of Acute Lymphoblastic Leukemia at 3 months (± 1 week) post CD7 CAR T-cell infusion in refractory or relapsed T-cell acute lymphoblastic leukemia/lymphoma (r/r T-ALL/T-LBL) patients treated with CD7 CAR T cells
Overall Response Rate (ORR) in phase I
Overall response rate (ORR), which includes CR, CRh, CRi, MLFS, aplastic marrow for blood and bone marrow; central nervous system (CNS) remission; CR and PR for lymphomatous extramedullary disease per National Comprehensive Cancer Network (NCCN) Guidelines Version 3.2023 of Acute Lymphoblastic Leukemia at 3 months (± 1 week) post CD7 CAR T-cell infusion in refractory or relapsed T-cell acute lymphoblastic leukemia/lymphoma (r/r T-ALL/T-LBL) patients treated with CD7 CAR T cells
Safety in phase II
The adverse events in refractory or relapsed T-cell acute lymphoblastic leukemia/lymphoma (r/r T-ALL/T-LBL) patients treated with CD7 CAR T cells will be assessed according to the 2019 Consensus on Cytokine Release Syndrome and Immune-cell-associated Neurotoxicity published by the American Society of Transplantation and Cell Therapy (ASTCT), the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0 and EBMT 2019 consensus.
Progression-Free Survival (PFS) in phase II
Progression-free survival (PFS) in refractory or relapsed T-cell acute lymphoblastic leukemia/lymphoma (r/r T-ALL/T-LBL) patients treated with CD7 CAR T cells.
Duration of Remission (DOR) in phase II
Duration of remission (DOR) in refractory or relapsed T-cell acute lymphoblastic leukemia/lymphoma (r/r T-ALL/T-LBL) patients treated with CD7 CAR T cells.
Click on the lead sponsor to view all of their trials.
Beijing GoBroad Hospital
Lead sponsor
The General Hospital of Western Theater Command
Collaborator
Zhaxin Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai
Collaborator
Shanghai Liquan Hospital
Collaborator
Central People's Hospital of Zhanjiang
Collaborator
First Affiliated Hospital of Guangxi Medical University
Collaborator
