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NCT06201416PHASE1Recruiting

Study of Single Doses of SBT777101 in Subjects With Rheumatoid Arthritis

Sonoma Biotherapeutics, Inc.

Start Date

3/6/2024

Completion Date

11/1/2026

Summary

This study will test the safety and effects of SBT777101 when given as a single dose to subjects with rheumatoid arthritis. It is the first study of this treatment being done in humans. Increasing dose levels will be given after the safety at lower dose levels is shown. Following completion of the initial single ascending dose cohorts, the study may evaluate alternative administration regimens of SBT777101, including split-dose administration. In the split-dose cohort, participants may receive two intravenous infusions of SBT777101 derived from a single manufacturing process, administered approximately 6 weeks apart. The study will continue to evaluate safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary clinical activity.

Detailed Description

The study evaluates the safety and effects of a novel regulatory CARTreg cell-based autoimmune and inflammatory disease therapy for the treatment of rheumatoid arthritis. The therapy is an autologous (using the patient's own cells) Treg cell therapy that targets proteins in the inflamed, disease-associated tissue, with the aim to dampen inflammation and restore balance to the immune system.

Eligibility Criteria

Age Range: 18 years to 70 years

Inclusion Criteria: * Body mass index (BMI) \<35 kg/m\^2, inclusive * Adult-onset, moderate-to-severe rheumatoid arthritis (RA) * Moderate-to-severe active disease * b/tsDMARD failure criterion (≥2) * Swollen joint count ≥4 * Clinical and/or ultrasound evidence of synovitis * Prior inadequate response to or unable to tolerate available RA therapies * Stable doses of RA medications for at least 30 days * Use of highly effective methods of contraception Exclusion Criteria: * Major surgery within 12 weeks prior to screening or planned within 12 months after dosing * Uncontrolled cardiovascular, pulmonary, renal, hepatic, endocrine, or gastrointestinal disease * Recurrent infections or active infection * Active or untreated latent tuberculosis * Primary or secondary immunodeficiency * History of or current inflammatory joint disease other than RA

Interventions

BIOLOGICAL

SBT777101

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Conditions

Rheumatoid Arthritis

Locations

Mayo Clinic

Scottsdale, Arizona 85259

United States

UCSF Medical Center

San Francisco, California 94143

United States

Stanford Medical Center

Stanford, California 94305

United States

University of Colorado

Aurora, Colorado 80045

United States

Northwestern University

Chicago, Illinois 60611

United States

Tufts University

Boston, Massachusetts 02111

United States

Massachusetts General Hospital

Boston, Massachusetts 02114

United States

Brigham and Women's Hospital

Boston, Massachusetts 02115

United States

Oregon Health Sciences University

Portland, Oregon 97239

United States