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ABA-101 in Participants With Progressive Multiple Sclerosis

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

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06566261
Enrollment
12
Registered
2024-08-22
Start date
2024-09-11
Completion date
2027-02-28
Last updated
2025-07-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Progressive Multiple Sclerosis

Keywords

Progressive Multiple Sclerosis, Cell Therapy, Multiple Sclerosis, Treg, Regulatory T Cell

Brief summary

This study will test the safety and effects of ABA-101 when given as a single dose to participants with progressive multiple sclerosis. It is the first study of this treatment in humans. After safety is demonstrated with a low dose of ABA-101, a higher dose will be evaluated.

Interventions

BIOLOGICALABA-101

ABA-101 is a TCR engineered, autologous regulatory T cell (Treg) therapy

Sponsors

Abata Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Sequential Escalating Dose Cohorts

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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).

Design outcomes

Primary

MeasureTime frameDescription
Incidence of adverse events (safety and tolerability)Day of Treatment to End of DLT Evaluation Period (28 Days)Incidence of AEs through Day 29

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026