Testing ABA-101 for treating progressive multiple sclerosis

A Phase 1 Open-label, Single Ascending Dose Study of ABA-101 in Participants With Progressive Multiple Sclerosis

Phase 1 Interventional Abata Therapeutics · NCT06566261

This study is testing a new cell therapy called ABA-101 to see if it can safely help people with progressive multiple sclerosis.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment12 (estimated)
Ages18 Years and up
SexAll
SponsorAbata Therapeutics Industry-sponsored
Locations3 sites (Baltimore, Maryland and 2 other locations)
Trial IDNCT06566261 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to evaluate the safety and effects of ABA-101, a cell therapy, administered as a single dose to participants diagnosed with progressive multiple sclerosis. The study will begin with a low dose to assess safety before progressing to a higher dose if deemed appropriate. Participants must meet specific eligibility criteria, including evidence of disease progression and certain radiographic markers. This is the first time ABA-101 will be tested in humans, marking a significant step in exploring new treatments for this condition.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with a confirmed diagnosis of progressive multiple sclerosis and evidence of disease progression.

Not a fit: Patients who have experienced a relapse within the last 24 months or are currently on disease-modifying therapies may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with progressive multiple sclerosis.

How similar studies have performed: While this approach is novel in humans, similar studies in preclinical models have shown promise in targeting regulatory T cells for autoimmune conditions.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Is ≥18 years old at signing of consent.
* Has a diagnosis of MS per the 2017 revised McDonald criteria.
* Has documented evidence of progression of disability independent of MS relapse activity (clinical or radiographic).
* Expresses the HLA that matches the TCR restriction.
* Presence of a radiographic biomarker of CNS inflammation as identified by MRI.
* Meets Expanded Disability Status Scale (EDSS) criteria.
* Meets the nine-hole peg test (9HPT) criteria.

Exclusion Criteria:

* Presents with clinical or radiographic evidence of relapse within 24 months prior to or at Screening.
* Is considered by the Investigator to be immunocompromised.
* Current treatment with disease-modifying therapies (DMTs).

Where this trial is running

Baltimore, Maryland and 2 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 Progressive Multiple SclerosisCell TherapyMultiple SclerosisTregRegulatory T Cell
Last reviewed 2026-06-09 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.