A Clinical Study to Evaluate the Safety and Preliminary Efficacy of QI-019B in Patients With Relapsed/Refractory Multiple Myeloma.

This is a single-arm, open-label, single-center clinical trial to evaluate the safety, tolerability, efficacy, pharmacokinetics, and pharmacodynamics of QI-019B in patients with relapsed/refractory multiple myeloma.

Study Overview

• Status: Not yet recruiting
• Conditions: Multiple Myeloma (MM)
• Intervention / Treatment: Drug: QI-019B Injection

Detailed Description

This investigator-initiated clinical study aims to evaluate QI-019B, the lentiviral vector that carries a BCMA/CD19-targeted CAR, in patients with relapsed or refractory multiple myeloma (MM). The study employs a dose-escalation design to assess safety, tolerability, and preliminary efficacy.

• Study Type: Interventional
• Enrollment (Estimated): 24
• Phase: Early Phase 1

Contacts and Locations

Study Locations

• China
  • Tianjin Municipality
    • Tianjin, Tianjin Municipality, China, 300000
      • Institute of Hematology & Blood Diseases Hospital
      • Contact: Gang AN, PhD&MD; Phone Number: 008613502181109; Email: angang@ihcams.ac.cn

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• 1. Age ≥ 18 years, any gender;
• 2. Diagnosed with multiple myeloma (MM) according to IMWG diagnostic criteria;
• 3. Have received at least 2 lines of anti-MM treatment, with at least one full treatment cycle per line, and experienced disease progression during the most recent anti-myeloma treatment or within 12 months after it, confirmed by available clinical evidence; or deemed by the investigator to be refractory to both immunomodulatory agents and proteasome inhibitors, with disease progression during the most recent anti-myeloma treatment or within 2 months after it (according to IMWG diagnostic criteria);

• 4. Disease must be measurable at screening, meeting one or more of the following criteria:

  • Serum M protein level ≥ 0.5 g/dL;
  • Or urine M protein level ≥ 200 mg/24h;
  • Or involved serum free light chain ≥ 10 mg/dL with abnormal serum free light chain κ/λ ratio;
• 5. ECOG performance status 0-2, with an expected survival of ≥ 3 months;

• 6. Bone marrow function test results (from screening or within 2 months prior) meet the following requirements:

  • Hemoglobin ≥ 6 g/dL (no red blood cell transfusion within 1 week before screening), recombinant human erythropoietin allowed; for patients meeting the ≥ 6 g/dL hemoglobin requirement at screening, red blood cell transfusions are allowed to maintain hemoglobin ≥ 6 g/dL;
  • Absolute neutrophil count (ANC) ≥ 600/μL (no use of granulocyte colony-stimulating factor (G-CSF) within 1 week before screening or pegylated G-CSF within 2 weeks before screening);
  • Platelet count ≥ 50,000/μL;
  • Lymphocyte count ≥ 500/μL;
• 7. Normal renal function: Creatinine clearance (CrCl) (Cockcroft-Gault formula) ≥45 mL/min;

• 8. Liver function must meet the following criteria:

  • Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤3.0× the upper limit of normal (ULN);
  • Total bilirubin (TBIL) and alkaline phosphatase (AKP or ALP) ≤2.0× ULN (except for congenital hyperbilirubinemia, e.g., Gilbert's syndrome, direct bilirubin ≤1.5× ULN);
  • Albumin ≥3 g/dL;

• 9. Cardiac function must meet the following criteria:

  • Left ventricular ejection fraction ≥50% (by echocardiography or MUGA scan);
  • No clinically significant pericardial effusion;
  • No clinically significant electrocardiogram abnormalities;

• 10. Pulmonary function must meet the following criteria:

  • Blood oxygen saturation ≥90% without oxygen supplementation;

• 11. Women of childbearing potential must have a negative pregnancy test at screening and before drug infusion and must not be breastfeeding.
• 12. Men and women of childbearing potential must agree to use effective contraception from the time of signing the informed consent until 1 year after the use of the study drug;
• 13. Men and women of childbearing potential must agree not to donate sperm or eggs (oocytes) or other reproductive cells from the time of signing the informed consent until 1 year after the use of the study drug;
• 14. The subject or their legal guardian agrees to participate in this clinical trial and signs the informed consent form (ICF), indicating that they understand the purpose and procedures of this clinical trial and are willing to participate in the study.

Exclusion Criteria:

• 1.During screening, participants who have received other anticancer treatments (based mainly on investigator judgment):

  • Received targeted therapy, epigenetic therapy, other investigational drugs, or treatment using invasive research medical devices within 5 half-lives;
  • Received immune/non-immune-directed systemic therapy within 1 week;
  • Received cytotoxic therapy within 2 weeks;
  • Received proteasome inhibitors within 2 weeks;
  • Received immunomodulatory therapy within 1 week.
  • Received radiotherapy within 4 weeks (if the radiotherapy covered ≤5% of bone marrow reserve, the subject is eligible regardless of the radiotherapy end date);
• 2. Received allogeneic hematopoietic stem cell transplantation within 6 months or autologous hematopoietic stem cell transplantation within 3 months before infusion;
• 3. Had malignancies other than MM before screening, except for: malignancies treated with curative intent, with no known active disease ≥2 years prior to enrollment; or adequately treated non-melanoma skin cancer with no evidence of disease currently;
• 4. Received any treatment using vesicular stomatitis virus G (VSVG) pseudotyped virus;
• 5. Had severe, uncontrolled infection symptoms (bacterial, viral, fungal, etc.) during the screening period;
• 6. Within 6 months before infusion, tested positive for hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb) with peripheral blood HBV DNA levels above the normal range; tested positive for hepatitis C virus (HCV) antibody with peripheral blood HCV RNA levels above the normal range; tested positive for human immunodeficiency virus (HIV) antibody; or tested positive for syphilis;

• 7. Had symptomatic heart failure or other serious cardiac diseases such as severe arrhythmias:

  • New York Heart Association (NYHA) class III or IV congestive heart failure;
  • Experienced myocardial infarction or underwent coronary artery bypass graft (CABG) or coronary stent implantation within 6 months prior to signing the ICF;
  • Had clinically significant ventricular arrhythmias, or a history of unexplained syncope (excluding cases caused by vasovagal response or dehydration);
  • Had a history of severe non-ischemic cardiomyopathy;

• 8. Other clinically significant diseases, including:

  • Primary immunodeficiency;
  • Stroke or seizure within 6 months prior to screening;
  • Clear clinical evidence of dementia or altered mental status;
  • Parkinson's disease or Parkinsonian movement disorders or history thereof;
• 9. Undergoing surgery within 2 weeks of administration or planned surgery within 2 weeks after administration, except for surgeries under local anesthesia;
• 10. Administration of live attenuated vaccines within 1 month before dosing;
• 11. Known severe allergic reaction to QI-019B or any of its formulation components;
• 12. Known severe allergic reaction to tocilizumab;
• 13. Unsuitable for establishing intravenous access;
• 14. Other conditions deemed by the investigator to be unsuitable for participation in this study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: QI-019B Injection; QI-019B Injection is an in vivo administered CAR-T gene therapy product that uses a lentiviral vector as the delivery system. Its mechanism of action involves transducing and integrating into the target T cell genome in the patient through the lentiviral vector, achieving stable expression of the CAR transgene, thereby generating CAR-T cells within the body.	Drug: QI-019B Injection; QI-019B Injection is an in vivo administered CAR-T gene therapy product that uses a lentiviral vector as the delivery system. Its mechanism of action involves transducing and integrating into the target T cell genome in the patient through the lentiviral vector, achieving stable expression of the CAR transgene, thereby generating CAR-T cells within the body.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The number and severity of dose-limiting toxicity (DLT)events	Dose-limiting toxicity (DLT) refers to a grade ≥3 toxic reaction that occurs within the DLT observation period and is considered by the investigator or collaborators to have a reasonable association with QI-019B treatment(toxicity grading is based on CTCAE 5.0 standards, while grading for cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS) follows the 2019 ASTCT consensus criteria)	Within 28 Days After QI-019B infusion
The total number, incidence, and severity of Adverse Events(AEs)	The total number, incidence, and severity of Adverse Events(AEs). All other AEs would be assessed according to the Common Terminology Criteria for Adverse Events (CTCAE, Version 5.0)	Within 28 Days After QI-019B infusion

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Duration of response (DOR)	DOR is defined as the interval between the first sCR, CR, VGPR, or PR after infusion and the disease progression or death.	Through study completion, an average of 2 year
Overall response rate (ORR）	Clinical efficacy can be evaluated according to the 2016 International Myeloma Working Group consensus criteria.	Day 14, Day 28, Month 2 , Month 3, Month 6, Month 9, Month 12, Month 18, Month24 after the treatment of QI-019B
Complete response (CR) rate	sCR/CR can be evaluated according to the 2016 International Myeloma Working Group consensus criteria.	Day 14, Day 28, Month 2 , Month 3, Month 6, Month 9, Month 12, Month 18, Month24 after the treatment of QI-019B.
Progression-free survival (PFS)	PFS is defined as the interval between a subject's receipt of QI-019B infusion and the first assessment of disease progression or death.	up to 2 years after treatment of QI-019B.
Overall survival (OS)	OS is defined as the interval between a subject's receipt of QI-019B infusion and death from any cause.	up to 2 years after treatment of QI-019B
Cmax	CAR-T kinetics would be detected by flow cytometry and droplet digital PCR in peripheral blood and bone marrow at each important time points. Cmax is the peak expansion value of CAR-T cells.	Baseline, Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 14, Day 17, Day 21, Day 24, Day 28, Month 2, Month 3, Month 6, Month 9, Month 12, Month 18, Month24 after the treatment of QI-019B
Tmax	CAR-T kinetics would be detected by flow cytometry and droplet digital PCR in peripheral blood and bone marrow at each important time points. Tmax is the time of the occurrence of expansion peak.	Baseline, Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 14, Day 17, Day 21, Day 24, Day 28, Month 2 , Month 3, Month 6, Month 9, Month 12, Month 18, Month24 after the treatment of QI-019B.
AUC(0-day 28)	CAR-T kinetics would be detected by flow cytometry and droplet digital PCR in peripheral blood and bone marrow at each important time points. Cmax is the peak expansion value of CAR-T cells. AUC(0- day28) refers to the area under curve of CAR-T cell expansion between infusion and day 28 post infusion. They all reflect the pharmacokinetics.	Baseline, Day 2, Day 4, Day 6, Day 8, Day 10, Day 12, Day 14, Day 17, Day 21, Day 24, Day 28 after the treatment of QI-019B

Collaborators and Investigators

• Sponsor: Institute of Hematology & Blood Diseases Hospital, China

Study record dates

Study Major Dates

• Study Start (Estimated): April 15, 2026
• Primary Completion (Estimated): August 1, 2028
• Study Completion (Estimated): August 1, 2029

Study Registration Dates

• First Submitted: April 13, 2026
• First Submitted That Met QC Criteria: April 13, 2026
• First Posted (Actual): April 20, 2026

Study Record Updates

• Last Update Posted (Actual): April 20, 2026
• Last Update Submitted That Met QC Criteria: April 13, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Keywords: CAR-T; CD19; BCMA; in vivo
• Additional Relevant MeSH Terms: Vascular Diseases; Cardiovascular Diseases; Neoplasms; Immune System Diseases; Neoplasms by Histologic Type; Hematologic Diseases; Lymphoproliferative Disorders; Immunoproliferative Disorders; Neoplasms, Plasma Cell; Hemostatic Disorders; Paraproteinemias; Blood Protein Disorders; Hemorrhagic Disorders; Hemic and Lymphatic Diseases; Multiple Myeloma
• Other Study ID Numbers: IIT2026025

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No