A Phase 1 Study of FT819 in B-cell Mediated Autoimmune Disease

Summary

This is a phase 1 study designed to evaluate the safety, pharmacokinetics (PK), and anti-B-cell activity of FT819 following treatment with or without auxiliary medicinal product (AMP) in participants with moderate to severe active systemic lupus erythematosus (SLE), antineutrophilic cytoplasmic antibody (ANCA)-associated vasculitis (AAV), idiopathic inflammatory myositis (IIM), and systemic sclerosis (SSc). The study will consist of a dose-escalation stage, followed by an expansion stage to further evaluate the safety and activity of FT819.

Eligibility

Key Inclusion Criteria:

* Age: 12 to 70 years old.
* Diagnosis: Must have active B-cell mediated autoimmune disease (SLE, AAV, IIM, or SSc) confirmed by standard criteria.
* Disease Severity: Moderate to severe, requiring at least two prior treatments that were ineffective.
* Health Status: Adequate organ function to tolerate treatment.
* Consent: Able to provide informed consent or assent/obtain parental consent and comply with study procedures.

Key Exclusion Criteria:

* Pregnancy/Breastfeeding: Women must not be pregnant or nursing.
* Severe Organ Dysfunction: Significant heart, lung, liver, or kidney impairment.
* Active Infections: No recent or ongoing serious infections.
* Recent Cancer or Prior Cell Therapy: No active/recent malignancies, prior CAR T-cell therapy, or organ transplant.
* Allergies: No known allergies to study treatments.
* Weight Restriction: Must weigh at least 50 kg (110 lbs).

Conditions5

Locations11 sites

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