Sequential CAR-T Cells Targeting BCMA/GPRC5D in Patients With Relapsed/ Refractory Multiple Myeloma

Overview

This is an open, single-arm, clinical study to evaluate the efficacy and safety of chimeric antigen receptor T cell immunotherapy (CAR-T) targeting BCMA or GPRC5D or both sequentially in the treatment of Relapsed/ Refractory Multiple myeloma

Detailed description

Chimeric antigen receptor (CAR)-modified T cells targeted against CD19 have demonstrated unprecedented successes in treating patients with hematopoietic and lymphoid malignancies. Besides CD19, many other molecules such as CD22, CD30,BCMA,CD123, etc. may have the potential to develop the corresponding CAR-T cells to treat patients whose tumors express those markers. In this study, investigators will evaluate the safety and efficacy of CAR-T targeting CD19/BCMA in patients with Autoimmune Disease. The primary goal is safety assessment including cytokine storm response and any other adverse effects. In addition, disease status after treatment will also be evaluated.

The purpose of this clinical trial is to assess the feasibility, safety, and efficacy of multiple CAR T-cell therapy that combines CAR T cells against Autoimmune Disease B Cells with CAR T cells targeting BCMA or GPRC5D or both in patients with relapsed and refractory Multiple Myeloma. The study also aims to learn more about the function of CAR T cells and their persistence in Multiple myeloma patients.

Interventions

• Biological BCMA/GPRC5D CAR-T cells
  The intervention in this clinical trial involves a novel approach using BCMA/GPRC5D Chimeric Antigen Receptor T (CAR T) cells combined with chemotherapy. The goal is to assess safety and efficacy in patients with specific hematologic malignancies. Treatment Regimen: Patients in the trial will undergo the following regimen: Fludarabine Phosphate (Days -4 to -2): IV administration of fludarabine phosphate over 30 minutes on days -4 to -2. It's part of the preparatory regimen to enhance the body

Primary outcome measures

• Incidence and severity of dose-limiting toxicities (DLTs) following chemotherapy preparative regimen and infusion of CD19/BCMA chimeric antigen receptor (CAR) T cells [Time frame: 28 days]

Secondary outcome measures (1)

• Rate of successful manufacture and expansion of the CD19/GPRC5D chimeric antigen receptor (CAR) T cells [Time frame: 60 days]

Eligibility criteria

Inclusion criteria

• Expected survival time ≥3 months;
• Subjects with recurrent/refractory Multiple Myeloma who have failed standard treatment or lack effective treatment, Including but not limited to systemic lupus erythematosus, idiopathic inflammatory myopathy, systemic sclerosis, IGG4-associated diseases, primary Sjogren's syndrome, rheumatoid arthritis, connective tissue disease-associated interstitial lung disease, immune thrombocytopenia, primary biliary cholangitis, etc.
• Histological evidence of non-suppurative destructive cholangitis and small bile duct destruction.
• Liver and kidney function, cardiopulmonary function meet the following requirements:
• Creatinine ≤1.5×ULN; (2) Electrocardiogram showed no clinically significant abnormal bands;
• Blood oxygen saturation >91% in non-oxygen state;
• Total bilirubin ≤2×ULN; ALT and AST≤2.5 x ULN; ALT and AST abnormalities due to disease, such as liver infiltration or bile duct obstruction, were determined to be less than 5×ULN. If Gilbert syndrome is diagnosed, the total bilirubin index can be relaxed to ≤3.0×ULN and the direct bilirubin ≤1.5×ULN.
• No serious mental disorders;
• Can understand this test and has signed the informed consent.

Exclusion criteria

• Malignant tumors other than R/R AID disease in the 5 years prior to screening, except for adequately treated cervical carcinoma in situ, basal cell or squamous cell skin cancer, local prostate cancer after radical surgery, and breast ductal carcinoma in situ after radical surgery;
• Hepatitis B surface antigen (HBsAg) positive; Hepatitis B core antibody (HBcAb) positive and peripheral blood hepatitis B virus (HBV) DNA titer detection is not within the normal reference value range; Hepatitis C virus (HCV) Antibody positive and peripheral blood hepatitis C virus (HCV) RNA positive; Human immunodeficiency virus (HIV) Antibody positive; Syphilis positive;
• Serious heart disease, including but not limited to unstable angina, myocardial infarction or bypass or stent surgery (within 6 months prior to screening), congestive heart failure (NYHA classification ≥III), and severe arrhythmia;
• Systemic diseases that are deemed unstable by researchers: including but not limited to severe liver, kidney, or metabolic diseases that require drug treatment;
• Active or uncontrollable infections (except mild genitourinary and upper respiratory tract infections) that require systemic treatment within 7 days prior to administration;
• Pregnant or lactating women, and female subjects who plan pregnancy within 2 years after cell transfusion or male subjects whose partners plan pregnancy within 2 years after cell transfusion;
• Patients who received CAR-T therapy or other gene-modified cell therapy before screening;
• Participated in other clinical studies 1 month before screening;
• Evidence of central nervous system invasion during subject screening;
• Mental patients with depression or suicidal thoughts;
• Situations considered unsuitable for inclusion by other researchers.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

N/A

Model

Single group

Masking

Open label

Primary purpose

Treatment

Study locations

China · 1 center

• District One Hospital — Beijing

Identifiers

NCT: NCT07032129 · ESBI202571

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗