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Multi-CAR T Cell Therapy Targeting CD7-positive Malignancies

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT04033302
Recruitment Status : Unknown
Verified September 2019 by Shenzhen Geno-Immune Medical Institute.
Recruitment status was:  Recruiting
First Posted : July 26, 2019
Last Update Posted : September 19, 2019
Information provided by (Responsible Party):
Shenzhen Geno-Immune Medical Institute

Tracking Information
First Submitted Date  ICMJE July 24, 2019
First Posted Date  ICMJE July 26, 2019
Last Update Posted Date September 19, 2019
Actual Study Start Date  ICMJE September 1, 2019
Estimated Primary Completion Date July 31, 2021   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: July 24, 2019)
Safety of infusion [ Time Frame: a year ]
Treatment-related adverse events are assessed by NCI CTCAE V4.0 criteria.
Original Primary Outcome Measures  ICMJE Same as current
Change History
Current Secondary Outcome Measures  ICMJE
 (submitted: July 24, 2019)
Clinical response [ Time Frame: a year ]
Objective responses (complete response (CR) + partial response (PR)) are assessed by the Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria.
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title  ICMJE Multi-CAR T Cell Therapy Targeting CD7-positive Malignancies
Official Title  ICMJE A Multi-Center Study of Multiple CAR T Cell Therapy for CD7-positive Hematological Malignancies
Brief Summary The purpose of this clinical trial is to assess the feasibility, safety and efficacy of CAR T cell therapy against CD7-positive hematological malignancies using CD7 specific CAR T cells. The study also aims to learn more about the function of CD7 CAR T cells and their persistence in patients of hematological malignancies.
Detailed Description

Hematological malignancies including T-cell acute lymphoblastic leukemia (T-ALL), T cell lymphoma (TCL), natural killer cell lymphoma (NKL) and acute myeloid leukemia (AML) are aggressive diseases which may express the early T cell development molecule CD7.

T-ALL represents 15% of childhood and 25% of adult ALL, and T-ALL patients are prone to early disease relapse and suffer from poor outcomes. Several immunophenotypic classifications have been proposed. According to European Group for the Immunological Characterization of Leukemias (EGIL), the presence of cytoplasmic or membrane expression of CD3 defines T-ALL. Four subgroups are proposed: (TI) the immature subgroup or pro-T-ALL is defined by the expression of CD7 and cCD3; (TII) pre-T-ALL also expresses CD2 and/or CD5 and/or CD8; (TIII) or cortical T-ALL shows CD1a positivity; (TIV) finally, mature T-ALL is characterized by the presence of surface CD3 and CD1a negativity.

Over the past few years, T cells modified with lentiviral chimeric antigen receptor (CAR) gene have been studied in different clinical settings. CD7 is a T cell surface protein that plays important role in T cell-B cell interaction in early lymphoid development, displays membrane expression early during T cell development before TCR rearrangement, and persists through terminal stages of T cell development, and a well-known marker for T-ALL. CD7 is considered a promising target for the treatment of T-ALL, TCL, AML and NKL. In this study, we will investigate CD7 CAR-T in combination with alternative targeting CAR-T cells as a new strategy to treat hematological malignancies.

The T cells from patients or transplantation donors will be genetically modified with lentiviral CAR vector to recognize CD7 expressed on the surface of the cancer cells. The engineered T cells will be applied to patients through intravenous delivery.

The purpose of this clinical trial is to assess the feasibility, safety and efficacy of multiple CAR-T cell therapy in hematological malignancies. Another goal of the study is to learn more about the function of CAR T cells and their persistence in the patients.

Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 1
Phase 2
Study Design  ICMJE Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE
  • T-cell Acute Lymphoblastic Leukemia
  • T-cell Acute Lymphoblastic Lymphoma
  • Acute Myeloid Leukemia
  • NK Cell Lymphoma
Intervention  ICMJE Biological: CD7-specific CAR gene-engineered T cells
Infusion of CD7-specific CAR-T cells
Study Arms  ICMJE Experimental: Single arm
Multiple CAR T cells to treat CD7-positive hematological malignancies
Intervention: Biological: CD7-specific CAR gene-engineered T cells
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status  ICMJE Unknown status
Estimated Enrollment  ICMJE
 (submitted: July 24, 2019)
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE December 31, 2023
Estimated Primary Completion Date July 31, 2021   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  1. Age older than 6 months.
  2. Confirmed expression of CD7 or additional surface antigens in the cancer cells by immuno-histochemical staining or flow cytometry.
  3. Karnofsky performance status (KPS) score is higher than 80 and life expectancy > 3 months.
  4. Adequate bone marrow, liver and renal function as assessed by the following laboratory requirements: cardiac ejection fraction ≥ 50%, oxygen saturation ≥ 90%, creatinine ≤ 2.5 × upper limit of normal, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 3 × upper limit of normal, total bilirubin ≤ 2.0mg/dL.
  5. Hgb≥80g/L.
  6. No cell separation contraindications.
  7. Abilities to understand and the willingness to provide written informed consent.

Exclusion Criteria:

  1. Sever illness or medical condition, which would not permit the patient to be managed according to the protocol, including active uncontrolled infection.
  2. Active bacterial, fungal or viral infection not controlled by adequate treatment.
  3. Known HIV or hepatitis C virus (HCV) infection.
  4. Pregnant or nursing women may not participate.
  5. Use of glucocorticoid for systemic therapy within one week prior to entering the trial.
  6. Previous treatment with any gene therapy products.
  7. Patients, in the opinion of investigators, may not be able to comply with the study.
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 6 Months to 75 Years   (Child, Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE China
Removed Location Countries  
Administrative Information
NCT Number  ICMJE NCT04033302
Other Study ID Numbers  ICMJE GIMI-IRB-19005
Has Data Monitoring Committee No
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE Not Provided
Current Responsible Party Shenzhen Geno-Immune Medical Institute
Original Responsible Party Same as current
Current Study Sponsor  ICMJE Shenzhen Geno-Immune Medical Institute
Original Study Sponsor  ICMJE Same as current
Collaborators  ICMJE Not Provided
Investigators  ICMJE Not Provided
PRS Account Shenzhen Geno-Immune Medical Institute
Verification Date September 2019

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP