Evaluating a new CAR T cell therapy for systemic sclerosis

A Phase 1/2, Open-Label Study to Evaluate the Safety and Efficacy of Autologous CD19-specific Chimeric Antigen Receptor T Cells (CABA-201) in Subjects With Systemic Sclerosis

Phase1; Phase2 Interventional Cabaletta Bio · NCT06328777

This study is testing a new CAR T cell therapy to see if it can help people with systemic sclerosis feel better and manage their symptoms.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Enrollment12 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorCabaletta Bio Industry-sponsored
Drugs / interventionsCAR T, cyclophosphamide, fludarabine
Locations10 sites (New Haven, Connecticut and 9 other locations)
Trial IDNCT06328777 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety and efficacy of CABA-201, a CD19-CAR T cell therapy, in patients with systemic sclerosis (SSc), a rare autoimmune disorder. Participants aged 18 to 75 with early active disease and significant organ involvement will receive a single dose of CABA-201 alongside cyclophosphamide and fludarabine. The study aims to assess how well this therapy can improve symptoms and manage the disease. It is an open-label study, meaning both the researchers and participants know the treatment being administered.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 to 75 with a clinical diagnosis of systemic sclerosis and evidence of significant organ involvement.

Not a fit: Patients with severe uncontrolled diseases or contraindications to the study medications may not benefit from this therapy.

Why it matters

Potential benefit: If successful, this therapy could provide a new treatment option for patients suffering from systemic sclerosis, potentially improving their quality of life.

How similar studies have performed: While CAR T cell therapies have shown promise in other autoimmune conditions, this specific application for systemic sclerosis is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥18 and ≤75
* A clinical diagnosis of SSc, based on the 2013 American College of Rheumatology and European League Against Rheumatism classification criteria.
* Early active disease
* Evidence of significant skin, pulmonary, renal, or cardiac involvement

Exclusion Criteria:

* Contraindication to leukapheresis
* History of anaphylactic or severe systemic reaction to fludarabine, cyclophosphamide or any of their metabolites
* Active infection requiring medical intervention at screening visit
* Current symptoms of severe, progressive, or uncontrolled renal, hepatic, hematological, gastrointestinal, pulmonary, psychiatric, cardiac, neurological, or cerebral disease, including severe and uncontrolled infections, such as sepsis and opportunistic infections.
* Concomitant medical conditions that, in the opinion of the investigator, might place the subject at unacceptable risk for participation in this study, interfere with the assessment of the effects or safety of the investigational product or with the study procedures
* Severe lung or cardiac impairment
* Previous CAR T cell therapy
* Prior solid organ (heart, liver, kidney, lung) transplant or hematopoietic cell transplant

Other protocol-defined inclusion/exclusion criteria may apply.

Where this trial is running

New Haven, Connecticut and 9 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.
Conditions Systemic SclerosisSclerodermaCABA-201autoimmune diseaseanti-CD19 CAR-T therapysystemic sclerosisscleroderma
Last reviewed 2026-06-13 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.