Exploratory Study on LNP-mRNA Drugs Targeting CD19/BCMA for the Treatment of Relapsed and Refractory Autoimmune Diseases

NCT07388212 | Not Yet Recruiting Early Phase 1

• 1 other identifier: CD19/BCMA IIT for ADs
• Study Type: interventional
• Target: 27
• Locations: 0 countries
• Sites: N/A

Brief Summary

Autoimmune diseases are a type of chronic disabling disease, characterized by the immune system incorrectly recognizing and attacking the body's own tissues, leading to tissue damage and organ dysfunction, seriously threatening life and health. Although there are various treatment methods currently available, there are still many limitations to immune related diseases that aim for long-term remission, and further research and breakthroughs are urgently needed. Targeting and clearing B cells is one of the core strategies in the treatment of autoimmune diseases. Its mechanism mainly involves clearing abnormally activated B cells, reducing the production of autoantibodies, and regulating immune disorders. The therapy targeting CD19 has become an important research and development direction due to its ability to clear a wider range of B cell lineages (including plasma cells), which may achieve deeper levels of B cell depletion than CD20 targeted therapy. In addition, BCMA is highly expressed specifically on plasma cells, especially long-lived plasma cells, and is a key target for clearing the source of antibody production. Therefore, the CD19/BCMA dual target therapy aims to achieve more complete coverage of the antibody production pathway by simultaneously targeting B cells (and precursors) and plasma cells, which is expected to further improve the treatment response rate and achieve deeper and more persistent immune reset. The advent of COVID-19 vaccine has brought LNP mRNA technology into the public's view. After years of development, it not only shines brilliantly in COVID-19 vaccine, but also is widely used in the treatment and exploration of cancer, rare diseases and other fields. The core of LNP mRNA technology targeting CD19/BCMA is to encapsulate the mRNA encoding specific proteins (such as anti-CD19/BCMA related proteins) in lipid nanoparticles and deliver them to the body through intravenous or intramuscular injection. This experimental drug is a messenger ribonucleic acid (mRNA) therapeutic drug based on the dual targets of CD19 and BCMA, formed by loading mRNA encoding CD19/BCMA receptor related proteins onto lipid nanoparticles (LNP) for injection.

Conditions

Autoimmune Diseases

Outcome Measures

Primary Outcomes (2)

• Dose limiting toxicity (DLT) and its incidence rate

  Within 28 days after the initial treatment

• Maxmum tolerated dose (MTD) or optimal biological dose (OBD)

  Through study completion, an average of 2 years

Secondary Outcomes (2)

• Preliminary efficacy evaluation: Objective Response Rate（ORR）

  Through study completion, an average of 2 years

• Preliminary efficacy evaluation: Duration of Response (DoR)

  Through study completion, an average of 2 years

Study Arms (2)

CD19/BCMA in vivo CAR-T, Escalation doses

EXPERIMENTAL

Drug: CD19/BCMA in vivo CAR-T

CD19/BCMA in vivo CAR-T, Extended doses

EXPERIMENTAL

Drug: CD19/BCMA in vivo CAR-T

Interventions

CD19/BCMA in vivo CAR-T DRUG

CD19/BCMA in vivo CAR-T based on LNP-mRNA

CD19/BCMA in vivo CAR-T, Escalation doses; CD19/BCMA in vivo CAR-T, Extended doses

Eligibility Criteria

• Age: 18 Years - 70 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• \. Age range of 18-70 years old (including threshold), gender not limited;
• \. KPS score\>60 points, life expectancy greater than 6 months;
• \. Male and female patients of appropriate age must use reliable methods of contraception before entering the trial, during the research process until 30 days after discontinuation of medication; Reliable contraceptive methods will be determined by the primary researchers or designated personnel;
• \. Those who can understand this experiment and have signed the informed consent form;
• \. Before screening (at baseline), corresponding conditions should be met;

You may not qualify if:

• \. Study participants who are allergic or hypersensitive to any component of the investigational drug, including those who are allergic to messenger RNA (mRNA) vaccines or other RNA LNP products.
• \. Merge any active infections that require antibiotic treatment and have not been controlled for at least one week prior to administration.
• \. Accompanied by other uncontrolled malignant tumors.
• \. History of cardiovascular disease within the first 6 months of screening: NYHA defined grade III or IV heart failure, myocardial infarction, unstable angina, uncontrolled or symptomatic atrial arrhythmias, any ventricular arrhythmias, or other clinically significant heart diseases.
• \. Positive for hepatitis B surface antigen (HBsAg); Or those who are positive for hepatitis B core antibody (HBcAb) and positive for hepatitis B virus (HBV) DNA or have a titer higher than the detection threshold; Individuals with positive hepatitis C virus (HCV) antibodies and HCV RNA positivity or titers above the detection threshold; Human immunodeficiency virus (HIV) antibody positive individuals; Cytomegalovirus (CMV) DNA positive or above the detection limit; Individuals who are positive for syphilis antigen or antibody.
• \. Have received attenuated live vaccine or protein subunit vaccine within 30 days before the first study medication.
• \. Women who are currently pregnant, breastfeeding, or planning to become pregnant.
• \. The researchers believe that there are other situations that are not suitable for participating in this clinical study.

Sponsors & Collaborators

• West China Hospital: lead

MeSH Terms

Conditions

Autoimmune Diseases

Condition Hierarchy (Ancestors)

Immune System Diseases

Study Design

• Study Type: interventional
• Phase: early phase 1
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: January 22, 2026
• First Posted: February 5, 2026
• Study Start: February 23, 2026
• Primary Completion (Estimated): January 1, 2028
• Study Completion (Estimated): December 31, 2028
• Last Updated: February 5, 2026

Record last verified: 2026-01