This is a phase I, interventional, single arm, open label, treatment study to evaluate the safety and tolerability of non-gene edited anti-CD7 CAR (also called anti-CD7 CAR) T cells in patients with relapsed and/or refractory T cell lymphoma or leukemia

Anti-CD7 CAR is a chimeric antigen receptor immunotherapy treatment designed to treat leukemia/lymphoma expressing CD7 antigen. T-cell acute lymphoblastic leukemia, T-acute lymphoblastic lymphoma and T-cell non-Hodgkin lymphoma are a subset of leukemias and lymphomas that are positive for the surface protein CD7. The purpose of this study is to evaluate the efficacy and safety of anti-CD7 CAR T cells.

Inclusion Criteria:

1. Signed written informed consent; Patients volunteer to participate in the research
2. Diagnosis is mainly based on the World Health Organization (WHO) 2008
3. Patients have exhausted standard therapeutic options
4. Systematic usage of immunosuppressive drug or corticosteroid must have been stopped for more than 1 weeks
5. Female must be not pregnant during the study

Exclusion Criteria:

1. Patients declining to consent for treatment
2. Prior solid organ transplantation
3. Potentially curative therapy including chemotherapy or hematopoietic cell transplant
4. Any drug used for GVHD must be stopped >1 week