Clinical Study of Senl-T7 CAR T Cells in the Treatment of Relapsed and Refractory CD7+ Acute T-ALL/T-LBL


This is an open, prospective, dose-escalation clinical study to evaluate the safety and efficacy of Senl-T7 in patients with relapsed or refractory CD7+ acute T lymphoblastic leukemia or T lymphoblastic lymphoma.Meanwhile, PK/PD indexes of Senl-T7 were collected.

Full Title of Study: “Clinical Study of Senl-T7 CAR T Cells in the Treatment of Relapsed and Refractory CD7+ Acute T Lymphoblastic Leukemia and T Lymphoblastic Lymphoma”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: N/A
    • Intervention Model: Single Group Assignment
    • Primary Purpose: Treatment
    • Masking: None (Open Label)
  • Study Primary Completion Date: October 30, 2027

Detailed Description

The CARs consist of an anti-CD7 single-chain variable fragment(scFv), a portion of the human CD137(4-1BB) molecule, and the intracellular component of the human CD3ζ molecule. Prior to CAR-T cell infusion, the patients will be subjected to preconditioning treatment. After CAR-T cell infusion, the patients will be evaluated for adverse reactions and efficacy.


  • Biological: Senl-T7
    • Patients will be treated with CD7 CAR-T cells

Arms, Groups and Cohorts

  • Experimental: CD-7 CART
    • Patients will be treated with CD7 CAR-T cells

Clinical Trial Outcome Measures

Primary Measures

  • Safety: Incidence and severity of adverse events
    • Time Frame: First 1 month post CAR-T cells infusion
    • To evaluate the possible adverse events occurred within first one month after CD7 CAR-T infusion, including the incidence and severity of symptoms such as cytokine release syndrome and neurotoxicity
  • Remission Rate
    • Time Frame: 3 months post CAR-T cells infusion
    • To obsere the efficacy of CAR-T cells after infusion, complete remission (CR), complete remission with incomplete recovery of blood cells (CRi), minimal tumor residual positive(MRD+) or negative (MRD-) CR/CRi, disease recurrence or progression (PD) will be used for evaluation.

Participating in This Clinical Trial

Inclusion Criteria

Diagnosis of relapsed/refractory T-cell lymphoblastic leukemia or T-cell lymphoblastic lymphoma: Induction therapy failed to achieve a complete remission of minor residual negative; Recurrence: after complete remission, any tumor load in the peripheral blood or bone marrow was 5%, or slightly residual positive, or new extramedullary lesions occurred; CD7 expression in tumor cells was detected by flow cytometry; Life expectancy greater than 12 weeks; KPS or Lansky score≥60; HGB≥70g/L (can be transfused); 2-70 years old; oxygen saturation of blood#90%#; HGB≥70g/L(blood transfusion allowed); Total bilirubin (TBil)≤3 × upper limit normal, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 5×upper limit of normal; Informed consent explained to, understood by and signed by patient/ guardian. Exclusion Criteria:

Any of the following cardiac criteria: Atrial fibrillation/flutter; Myocardial infarction within the last 12 months; Prolonged QT syndrome or secondary prolonged QT, per investigator discretion. Cardiac echocardiography with LVSF (left ventricular shortening fraction)<30% or LVEF(left ventricular ejection fraction)<50%; or clinically significant pericardial effusion. Cardiac dysfunction NYHA(New York Heart Association) III or IV (Confirmation of absence of these conditions on echocardiogram within 12 months of treatment); Has an active GvHD; Has a history of severe pulmonary function damaging; With other tumors which is/are in advanced malignant and has/have systemic metastasis; Severe or persistent infection that cannot be effectively controlled; Merging severe autoimmune diseases or immunodeficiency disease; Patients with active hepatitis B or hepatitis C([HBVDNA+]or [HCVRNA +]); Patients with HIV infection or syphilis infection; Has a history of serious allergies on Biological products (including antibiotics); Clinically significant viral infection or uncontrolled viral reactivation of EBV(Epstein-Barr virus), CMV(cytomegalovirus), ADV(adenovirus), BKvirus, or HHV(human herpesvirus)-6. Presence of symptomatic disorders of the central nervous system, which include but not limited to uncontrolled epilepsy, cerebrovascular ischemia/hemorrhage, dementia, and cerebellar disease, etc.; Have received transplant treatment for less than 6 months in prior to enrollment; Being pregnant and lactating or having pregnancy within 12 months; Any situations that the researchers believe will increase the risks for the subject or affect the results of the study.

Gender Eligibility: All

Minimum Age: 2 Years

Maximum Age: 70 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Hebei Senlang Biotechnology Inc., Ltd.
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Contact(s)
    • Xian Zhang, 008618611636172,

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