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A Study of mRNA Encoding CD19/CD3 T Cell Engager (ABO2203) in Patients With Refractory Autoimmune Diseases

A Clinical Study to Investigate Safety, Tolerability, and Preliminary Efficacy of mRNA Encoding CD19/CD3 T Cell Engager (ABO2203) in Patients With Refractory Autoimmune Diseases

Status
Recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06747156
Enrollment
66
Registered
2024-12-24
Start date
2024-12-23
Completion date
2028-12-01
Last updated
2026-03-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Autoimmune Diseases

Brief summary

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, as well as preliminary efficacy of mRNA encoding CD19/CD3 T cell engager (ABO2203) in patients with refractory autoimmune diseases who received inadequate response or relapsed from standard of care (SoC). The trial included dose escalation and dose expansion parts.

Interventions

Name of Active Ingredient: mRNA encoding CD19/CD3 T cell engager

Sponsors

Ruijin Hospital
Lead SponsorOTHER
Abogen Life Sciences (Shanghai) Co., Ltd.
CollaboratorUNKNOWN

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. ≥18 years of age at time of informed consent. 2. Diagnosis of autoimmune diseases according to the corresponding disease classification criteria. 3. Inadequate response to SoCs or relapsed after the treatment. 4. Patients were on a stable dose of SoCs for at least 4 weeks prior to enrollment. 5. Sufficient organ function.

Exclusion criteria

1. Active infection, including tuberculosis, active or relapsed peptic ulcer, etc. 2. Severe hypogammaglobulinemia or IgA deficiency. 3. Active hepatitis or with a history of severe liver disease. 4. History of rapid allergic reactions, eczema or asthma that cannot be controlled by topical corticosteroids. 5. Severe cardiovascular diseases. 6. History of cancer within past 5 years. 7. Have other serious medical conditions. 8. Received any of B cell targeted therapies and biologic therapies within the defined time window. 9. History of severe allergies or known allergies to any active or inactive component of the study drug(s). 10. A history of organ transplantation, bone marrow transplantation or hematopoietic stem cell transplantation.

Design outcomes

Primary

MeasureTime frame
The incidence, severity, and nature of treatment-emergent adverse events (TEAE)s.from the first dose of study treatment to 30 days after the last dose of study treatment.
The incidence, severity, and nature of serious TEAEs (TESAE)s .from the first dose of study treatment to 30 days after the last dose of study treatment.
The incidence, severity, and nature of TEAEs leading to interruption or early termination of study treatment.from the first dose of study treatment to 30 days after the last dose of study treatment.

Countries

China

Contacts

CONTACTQiongyi Hu
huqiongyi131@163.com18317071395
PRINCIPAL_INVESTIGATORChengde Yang

Ruijin Hospital

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 25, 2026