A Study of C-CAR088 in Patients With Relapsed or Refractory Multiple Myeloma

Overview

This is a multicenter, open-label study to evaluate the safety and efficacy of C-CAR088 in patients with relapsed or refractory multiple myeloma. The phase Ib part of this study is to determine the recommended phase 2 dose (RP2D) of C-CAR088 in the targeted patient population.

Full Title of Study: “A Phase Ib/II Study of CBM.BCMA Chimeric Antigen Receptor T Cell Product (C-CAR088) for Treating Patients With Relapsed or Refractory Multiple Myeloma”

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: July 2024

Detailed Description

The study includes the following sequential procedures: Screening, Apheresis and C-CAR088 manufacturing, Baseline testing, Lymphodepletion, C-CAR088 infusion, and Follow-up Visit. Two dose levels of C-CAR088 will be tested during the phase Ib part to determine RP2D, which will be further evaluated during the phase II part.

Interventions

• Biological: B-cell maturation antigen (BCMA) directed chimeric antigen receptor (CAR)-T cell
  • Autologous 2nd generation BCMA-directed CAR-T cells, single infusion intravenously

Arms, Groups and Cohorts

• Experimental: C-CAR088
  • Autologous C-CAR088 administered by intravenous (IV) infusion

Clinical Trial Outcome Measures

Primary Measures

• [phase Ib] Incidence and severity of Adverse Events
  • Time Frame: 24 months
  • Incidence and severity of Adverse Events
• [phase II] Overall response rate (ORR) at 3 months after C-CAR088 infusion
  • Time Frame: 3 months
  • the rate of patients with best response of partial response (PR) or better at 3 months after C-CAR088 infusion

Secondary Measures

• Overall response rate (ORR)
  • Time Frame: 24 months
  • The rate of patients with best response of partial response (PR) or better
• [phase Ib] Overall response rate (ORR) at 3 months after C-CAR088 infusion
  • Time Frame: 3 months
  • The rate of patients with best response of partial response (PR) or better at 3 months after C-CAR088 infusion
• Duration of response (DOR)
  • Time Frame: 24 months
  • The time from the first documented PR or better response to relapse or death, whichever occurs first
• Time to response (TTR)
  • Time Frame: 24 months
  • The time from the date of C-CAR088 infusion to the first documented PR or better
• Progression-free survival (PFS)
  • Time Frame: 24 months
  • The time from the date of C-CAR088 infusion to the date of first documented disease progression or death
• Overall survival (OS)
  • Time Frame: 24 months
  • The time from the date of C-CAR088 infusion to the date of death
• Minimal residual disease (MRD) negativity rate
  • Time Frame: 24 months
  • The rate of patients reached MRD negativity
• [phase II] Incidence and severity of Adverse Events
  • Time Frame: 24 months
  • Incidence and severity of Adverse Events
• Maximal plasma concentration (Cmax)
  • Time Frame: 24 months
  • maximal plasma concentration of C-CAR088 in peripheral blood
• Time to reach the maximal plasma concentration (Tmax)
  • Time Frame: 24 months
  • Time to reach the maximal plasma concentration of C-CAR088 in peripheral blood
• Area under the curve within 28 days (AUC0-28d)
  • Time Frame: 28 days
  • Area under the curve of C-CAR088 in peripheral blood within 28 days post infusion
• Time of last measurable observed concentration (Tlast)
  • Time Frame: 24 months
  • Time of last measurable observed concentration of C-CAR088 in peripheral blood
• Anti-drug (C-CAR088) antibody
  • Time Frame: 24 months
  • Presence of serum anti-drug (C-CAR088) antibody
• Serum M protein
  • Time Frame: 24 months
  • serum M proteins concentration changes over time
• Urine M protein
  • Time Frame: 24 months
  • Urine M proteins concentration changes over time
• Serum free light chain (sFLC)
  • Time Frame: 24 months
  • Serum free light chain (sFLC) concentration changes over time

Participating in This Clinical Trial

Inclusion Criteria

• ≥ 18 years of age, male or female patients – Relapsed or refractory multiple myeloma – Have been treated with ≥ 3 prior lines of therapy, including at least one proteasome inhibitor and one immunomodulatory drug, and had progressed during or within 12 months post the last treatment. – Had measurable disease as defined by any of the following criteria: – Serum M protein ≥ 0.5g/dL – Urine M protein ≥ 200mg/24h – Serum free light chain (sFLC): abnormal κ/λ ratio with involved sFLC ≥ 100mg/L – Adequate liver, renal, bone marrow, and heart function – Eastern cooperative oncology group (ECOG) 0-1 Exclusion Criteria – Any known allergies to the components or excipients of the C-CAR088 cell product – Prior allogeneic hematopoietic stem cell transplantation (HSCT) at anytime, or autologous stem-cell transplantation (ASCT) within 12 weeks prior to apheresis – Central nervous system (CNS) involvement – Stroke or convulsion history within 6 months prior to signing informed consent form (ICF) – Plasma leukemia – Autoimmune disease, immunodeficiency or diseases requiring immunosuppressants treatment – Uncontrolled active infection; active hepatitis B virus (HBV), hepatitis C virus (HCV) infection; HIV or syphilis infection – Severe heart, liver, renal or metabolism disease – Inadequate wash-out time for previous anti-tumor treatments prior to apheresis – Previous CAR-T cell treatment, genetically modified T-cell therapies or BCMA-directed treatment history – History or current evidence of any condition, therapy, or laboratory abnormality that, in the opinion of the investigator, might confound the results of the trial, interfere with the patient's safe participation and compliance in the trial

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

• Lead Sponsor
  • Cellular Biomedicine Group Ltd.
• Provider of Information About this Clinical Study
  • Sponsor
• Overall Official(s)
  • Lugui Qiu, Principal Investigator, Institute of Hematology & Blood Diseases Hospital
• Overall Contact(s)
  • Lugui Qiu, M.D., PH.D., 022-23909083, Qiulg@ihcams.ac.cn