A Study of CAR-T Cells Targeting GPRC5D in the Treatment of r/r Multiple Myeloma

Study Purpose

This is a single-arm, open-label, dose-escalation study to evaluate the safety, tolerability, cellular kinetics and initial efficacy of CAR-T cell therapy targeting GPRC5D in multiple myeloma subjects who have failed the standard treatments.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Eligible Ages 18 Years - 75 Years
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

1. The subject can understand and have the ability to sign an informed consent form; 2. Male or female subjects, aged 18-75 years; 3. The expected survival period is not less than 12 weeks; 4. ECOG score ≤ 2 ; 5. Diagnosed as multiple myeloma according to the IMWG standard in 2018; 6. The expression of GPRC5D in bone marrow plasma cells is more than 20%, or it is positive in tumor tissue by immunohistochemistry. One of the following criteria must be detected: 1. If IgG type MM, serum M protein ≥10g/L; if IgA, IgD, IgE or IgM type MM, serum M protein ≥5g/L; 2. Or urine M protein level ≥200mg/24h; 3. Or light chain type MM, serum free light chain (sFLC) ≥ 100mg / L and K/ λ FLC ratio is abnormal; 4. Or there are extramedullary lesions; 7. Subjects who have received at least 3 different mechanism drugs (including chemotherapy, protease inhibitors, immunosuppressive agents, etc.) have failed treatments, or have progressed or recurred during the last treatment or within 6 months after the end of treatment ; 8. Lung function is normal, and oxygen saturation is greater than 92%; 9. No heart disease or coronary heart disease, echocardiogram showed normal diastolic function, left ventricular ejection fraction (LVEF) ≥50%, and no serious arrhythmia; 10. Liver function: TBIL<3×ULN, AST<2.5×ULN, ALT<2.5ULN; 11. Renal function: creatinine clearance rate (estimated by Cockcroft Gault formula) ≥ 30 mL/min; 12. The blood routine meets the following standards: 1. Lymphocyte count>0.5×10e9/L; 2. Neutrophils ≥1.0×10e9/L; 3. Hemoglobin ≥80g/L; 4. Platelet ≥75×10e9/L. 13. From the use of study drug to 2 years after treatment, male subjects or female subjects of childbearing age must agree and be able to take effective contraceptive measures.

Exclusion Criteria:

1. Pregnant or breastfeeding; 2. HBsAg or HBcAb are positive, and the quantitative detection of HBV DNA in peripheral blood is more than 100 copies / L; HCV antibody and HCV RNA in peripheral blood are positive; HIV antibody positive; Syphilis antibody is positive in the first screening; 3. Any unstable systemic disease: including but not limited to unstable angina, cerebrovascular accident or transient cerebral ischemia (within 6 months before screening), myocardial infarction (within 6 months before screening), congestive heart failure (New York Heart Association [NYHA] classification ≥ grade III), severe arrhythmia with poor drug control, liver, kidney or metabolic diseases; 4. Had hypersensitivity or intolerance to any drug used in this study; 5. Patients who received anti-cancer chemotherapy or other medications within 2 weeks before screening; 6. Uncontrolled malignant tumors except MM, excluding malignant tumors that received radical treatment and no active disease was found within 3 years before enrollment; 7. Clinically significant central nervous system diseases, such as epilepsy, cerebrovascular ischemia/hemorrhage, dementia, cerebellar disease, psychosis, active central nervous system involvement or cancerous meningitis; 8. In the past two years, autoimmune diseases (such as Crohn's disease, rheumatoid arthritis, systemic lupus erythematosus) caused damage to terminal organs, or required systemic application of immunosuppressive or other drugs; 9. Severe active viral, bacterial or uncontrolled systemic fungal infections; Hereditary bleeding / coagulation diseases, history of non traumatic bleeding or thromboembolism, other diseases that may increase the risk of bleeding, etc; 10. Patients who received autologous hematopoietic stem cell transplantation (ASCT) within 8 weeks before screening, or who plan to undergo ASCT during the study period; 11. Patients received allogeneic stem cell therapy; 12. Any unsuitable to participate in this trial judged by the investigator.

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Early Phase 1
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Zhejiang University
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Huang He
Principal Investigator Affiliation Hematology
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Other, Industry
Overall Status Recruiting
Countries China

The disease, disorder, syndrome, illness, or injury that is being studied.

Multiple Myeloma
Arms & Interventions


Experimental: Treatment Group

This is a open label, single arm clinical trial.


Drug: - GPRC5D-CAR-T

After enrollment, subjects complete the PBMC apheresis, then complete the Lymphocyte clearance, and then receive the dose climbing test: 1×10e6/kg,3×10e6/kg,6×10e6/kg.

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

International Sites

Hangzhou, Zhejiang, China




The first affiliated hospital of medical college of zhejiang university

Hangzhou, Zhejiang, 310003

Site Contact

He Huang, MD