A Feasibility and Safety Study of Dual Specificity CD38 and BCMA CAR-T Cell Immunotherapy for Relapsed or Refractory Multiple Myeloma

Overview

CAR-T cell therapy has shown promising results for the treatment of relapsed or refractory Multiple Myeloma,however, a subset of patients relapse due to the loss of target in tumor cells.Dual Specificity CD38 and BCMA CAR-T cells can recognize and kill the malignant cells through recognition of CD38 or BCMA. This is a phase 1/2 study designed to determine the safety of dual specificity CD38 and BCMA CAR-T cells and the feasibility of making enough to treat patients with relapsed or refractory Multiple Myeloma.

Full Title of Study: “Phase I/II Study to Evaluate Treatment of Relapsed or Refractory Multiple Myeloma With Dual CAR-T Cells Targeting CD38 and BCMA”

Study Type

• Study Type: Interventional
• Study Design
  • Allocation: Non-Randomized
  • Intervention Model: Single Group Assignment
  • Primary Purpose: Treatment
  • Masking: None (Open Label)
• Study Primary Completion Date: December 5, 2022

Detailed Description

1. PRIMARY OBJECTIVES: 1. To evaluate the feasibility and safety of dual specificity CD38 and BCMA CAR-T cells in patients with relapsed or refractory Multiple Myeloma. 2. To evaluate the duration of in vivo persistence of adoptively transferred T cells, and the phenotype of persisting T cells.Real Time polymerase chain receptor (RT-PCR) and Flow cytometry(FCM) analysis of PB,BM and lymph node will be used to detect and quantify survival of universal dual specificity CD38 and BCMA CAR-T cells over time. 2. SECONDARY OBJECTIVES: 1.For patients with detectable disease, measure anti-tumor response due to dual specificity CD38 and BCMA CAR-T cell infusions. 2.The CAR-T cells will be administered by i.v. injection over 20-30 minutes as a using Day 0: 1-5x10e6/kg total dose on day 0.

Interventions

• Biological: Dual Specificity CD38 and bcma CAR-T Cells
  • 1) Biological: Dual Specificity CD38 and BCMA CAR-T Cells,2)1-5X10E6/Kg

Clinical Trial Outcome Measures

Primary Measures

• Number of Participants with Severe/Adverse Events as a Measure of Safety and Tolerability
  • Time Frame: 24weeks
• MTD of dual specificity CD38 and BCMA CAR-T cells
  • Time Frame: 4 weeks
  • The highest dose of dual specificity CD38 and BCMA CAR-T cells that is estimated to result in defined Dose Limiting Toxicity (DLT) with the exception of allowable ‘expected’ AEs associated with the intravenous infusion of dual specificity CD38 and BCMA CAR-T cells
• Copies numbers of CAR in peripheral blood(PB), bone marrow(BM)and lymph nodes
  • Time Frame: 24 weeks

Secondary Measures

• Six-month Objective response rate of complete remission and partial remission
  • Time Frame: 24 weeks
• Six-month Overall survival
  • Time Frame: 24 weeks
• Six-month Progression free survival
  • Time Frame: 24 weeks

Participating in This Clinical Trial

Inclusion Criteria

1. Male or female participant 2. 12 Years to 70 Years (Child, Adult, Senior) 3. Patient with relapsed or refractory Multiple Myeloma,multiple myeloma cell express CD38(over 50%) and BCMA (over 50%) 4. Estimated life expectancy ≥ 12 weeks (according to investigator's judgement) 5. Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1 6. Adequate organ function Exclusion Criteria:

1. Prior malignancy, except carcinoma in situ of the skin or cervix treated with curative intent and with no evidence of active disease 2. Diagnosis of Burkitt's leukemia/lymphoma according to WHO classification or chronic myelogenous leukemia lymphoid blast crisis 3. Richter's syndrome 4. Presence of Grade II-IV (Glucksberg) or B-D (IBMTR) acute or extensive chronic GVHD at the time of screening 5. Subjects with any autoimmune disease or any immune deficiency disease or other disease in need of immunosuppressive therapy 6. Severe active infection (uncomplicated urinary tract infections, bacterial pharyngitis is allowed), Prophylactic antibiotic, antiviral and antifungal treatment is permissible 7. Active hepatitis B, active hepatitis C, or any human immunodeficiency virus (HIV) infection at the time of screening 8. Patient has an investigational medicinal product within the last 30 days prior to screening 9. Previous treatment with investigational gene or cell therapy medicine products 10. Concurrent use of systemic steroids. Recent or current use of inhaled steroids is not exclusionary 11. Pregnant or nursing women

Gender Eligibility: All

Minimum Age: 12 Years

Maximum Age: 70 Years

Are Healthy Volunteers Accepted: No

Investigator Details

• Lead Sponsor
  • Chinese PLA General Hospital
• Provider of Information About this Clinical Study
  • Principal Investigator: Han weidong, Director of Molecular & Immunological Department,Biotherapeutic Department – Chinese PLA General Hospital
• Overall Contact(s)
  • YaJing Zhang, 86-10-55499341, plagh@qq.com