Evaluating FT819 for autoimmune diseases

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

PHASE1 · Fate Therapeutics · NCT06308978

This study is testing a new treatment called FT819 to see if it can safely help people with moderate to severe autoimmune diseases feel better.

Quick facts

PhasePHASE1
Study typeInterventional
Enrollment244 (estimated)
Ages12 Years to 70 Years
SexAll
SponsorFate Therapeutics (industry)
Drugs / interventionsCAR T
Locations18 sites (Fullerton, California and 17 other locations)
Trial IDNCT06308978 on ClinicalTrials.gov

What this trial studies

This phase 1 study aims to assess the safety, pharmacokinetics, and anti-B-cell activity of FT819 in patients with moderate to severe active autoimmune diseases, including systemic lupus erythematosus, ANCA-associated vasculitis, idiopathic inflammatory myositis, and systemic sclerosis. The study will involve a dose-escalation phase followed by an expansion phase to further evaluate the treatment's safety and efficacy. Participants will receive FT819, with or without auxiliary medicinal products, to determine the optimal dosing and therapeutic effects.

Who should consider this trial

Good fit: Ideal candidates are individuals aged 12 to 70 with moderate to severe active B-cell mediated autoimmune diseases who have not responded to at least two prior treatments.

Not a fit: Patients with severe organ dysfunction, recent cancer, or those who are pregnant or breastfeeding may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with difficult-to-treat autoimmune diseases.

How similar studies have performed: While this approach is novel, similar studies targeting B-cell mediated autoimmune diseases have shown promise in the past.

Eligibility criteria

Show full inclusion / exclusion criteria
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).

Where this trial is running

Fullerton, California and 17 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Antineutrophilic Cytoplasmic Antibody- Associated Vasculitis, Idiopathic Inflammatory Myositis, Systemic Sclerosis, Systemic Lupus Erythematosus, Lupus Nephritis, FT819, Fate Therapeutics, Idiopathic inflammatory myositis

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.