A Multicenter, Open-Label, Non-Randomized, Single-Arm Clinical Study of Nanobody CD5-CAR T Cell Therapy for Refractory/Relapsed T Lymphocyte Malignancies

Launched by BEIJING GOBROAD HOSPITAL · Jul 8, 2025

Keywords

ClinConnect Summary

This clinical trial is testing a new kind of treatment called CD5 CAR T-cell therapy for people with certain hard-to-treat blood cancers that affect T-cells, a type of immune cell. These cancers have not responded well to standard treatments like chemotherapy or stem cell transplants. The goal of the study is to find the safest and most effective dose of this therapy and to see how well it works in patients whose cancer has come back or did not improve with previous treatments.

People who may be eligible for this trial are those aged 1 to 70 years who have a specific type of T-cell cancer that tests positive for a marker called CD5, and who have limited treatment options left. Participants need to be well enough to take part and agree to follow the study’s rules. During the trial, patients will receive an infusion of specially modified immune cells designed to attack their cancer. The study will closely watch for any side effects and will measure how their cancer responds over time. It’s important to know that this is an early-phase trial focused primarily on safety, so it may involve careful monitoring and visits to the hospital.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• Only patients who meet all the following criteria can be included:
• • 1. Candidates with relapse or refractory CD5+ T-cell malignancies, who have progressed after treatment with all standard therapies or been intolerant of standard care, have limited prognosis with currently available therapies and have no available curative treatment options (such as stem-cell transplantation (SCT) or chemotherapy); 2. For subjects who received autologous CD5 CAR T cells, the tumor burden in peripheral blood is less than 20%, and suspending anti-neoplastic treatment for more than 2 weeks; 3. Aged 1-70 years; 4. No severe allergy; 5. Eastern Cooperative Oncology Group (ECOG) performance status 1 score 0 to 2; 6. Patients are expected to live for at least 60 days; 7. CD5+ on blasts in bone marrow (BM) or cerebrospinal fluid (CSF) and tumor tissues by flow cytometry and immunohistochemistry, respectively. (Positive rate \>80% by flow cytometry with less than one log difference in mean fluorescence intensity from normal T cells, or positive rate \>30% positive by immunohistochemistry); 8. Provide a signed informed consent before any screening procedure. Subjects who voluntarily participate in the study should have the ability to understand and sign the informed consent form and be willing to follow the study visit schedule and relevant study procedure, as specified in the protocol. Candidates aged 19-70 years need to be sufficiently conscious and able to sign the treatment consent form and voluntary consent form. Children candidates of 8-18 years old need to be sufficiently conscious and able to sign the treatment consent form and voluntary consent form and their legal guardian or patient advocate has also need to sign the treatment consent form and voluntary consent form, respectively. Children candidates of 1-7 can be recruited after the legal guardian or patient advocate has signed the treatment consent form and voluntary consent form; 9. Have available allogeneic hematopoietic stem cell transplantation donor for the subject who received newly matched donor-derived CD5 CAR T cells, and is willing to perform SCT when CR is achieved.
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• Exclusion Criteria:
• Patients with at least one of the following conditions are excluded:
• • 1. Impaired consciousness or intracranial hypertension; 2. Symptomatic congestive heart failure or severe cardiac arrhythmia; 3. Manifestations of severe respiratory system failure; 4. Co-existence with other malignancies; 5. Disseminated intravascular coagulation; 6. Serum creatinine and/or blood urea nitrogen (BUN) ≥ 1.5-fold upper limit; 7. Sepsis or other uncontrollable infections; 8. Uncontrollable diabetes; 9. Serious mental illness; 10. Apparent and active intracranial lesions on cranial magnetic resonance imaging (MRI); 11. Underwent organ transplantation, excepting SCT; 12. Pregnant females; 13. Positive test for infectious hepatitis, acquired immune deficiency syndrome (AIDS) or syphilis; 14. Post-CAR SCT is not feasible in patients who plan to receive newly matched donor-derived CD5 CAR T cells; 15. Inability to collect peripheral blood mononuclear cells (PBMC) or no frozen PBMC available for CAR T cell manufacturing.
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