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RESET-MS: A Study to Evaluate the Safety and Efficacy of CABA-201 in Participants With Multiple Sclerosis

RESET-MS: 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 Participants With Multiple Sclerosis

Status
Withdrawn
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07006805
Enrollment
0
Registered
2025-06-05
Start date
2026-06-01
Completion date
2029-10-01
Last updated
2026-06-25

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

Conditions

Multiple Sclerosis, Multiple Sclerosis (MS) - Relapsing-remitting, Multiple Sclerosis - Relapsing Remitting, Multiple Sclerosis (Relapsing Remitting), Progressive Multiple Sclerosis, Progressive Multiple Sclerosis (PMS), Relapsing Multiple Sclerosis (RMS)

Keywords

CABA-201, Rese-cel, autoimmune disease, anti-CD19 CAR-T therapy, cellular therapy, Multiple Sclerosis, Relapsing MS, RRMS, Progressive MS, PPMS, SPMS, Neurology, Resecabtagene autoleucel

Brief summary

RESET-MS: 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 Participants with Multiple Sclerosis

Detailed description

This is a Phase 1/2, open-label study designed to evaluate the safety, tolerability, and efficacy of different doses of CABA-201 in adult participants with MS to determine an appropriate dose for future studies. Any participant who receives CABA-201 will be followed after infusion for 156 weeks. Two cohorts of participants will be studied based upon their MS diagnosis. * Relapsing MS Cohort (RMS Cohort): Participants with active relapsing MS, including relapsing remitting MS (RRMS) and relapsing secondary progressive MS (SPMS) that is treatment-resistant * Progressive MS Cohort (PMS Cohort): Participants with worsening progressive MS, including primary progressive MS (PPMS) or non-relapsing SPMS that is treatment-resistant The study will consist of 2 parts: Part A (dose escalation) and Part B (dose expansion).

Interventions

BIOLOGICALCABA-201

Single intravenous infusion of CABA-201 following preconditioning with fludarabine and cyclophosphamide

Sponsors

Cabaletta Bio
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

The main inclusion criteria include the following: * Able to provide informed consent. * Age ≥18 and ≤60 years of age. * Diagnosis of MS per the revised 2017 McDonald criteria (Thompson et al, 2018). * For participants with relapsing forms of MS only (RMS Cohort): 1. Moderate degree of previously accumulated disability as measured by the Expanded Disability Status Scale (EDSS) 2. Documentation of clinical relapse or a positive historical gadolinium (Gd)-enhancing magnetic resonance imaging (MRI) scan prior to Screening 3. Prior treatment with a high-efficacy therapy or prior treatment failure of oral therapies * For participants with progressive forms of MS only (PMS cohort): 1. Moderate Disability as measured by EDSS 2. Presence of abnormal function on protocol specified EDSS Functional Systems Scale 3. Objective worsening of disease prior to Screening while on standard of care therapy * Clinical stability by vital signs assessment at the time of screening

Exclusion criteria

The main

Design outcomes

Primary

MeasureTime frameDescription
Primary (Part A: Dose Escalation) incidence and severity of adverse eventsUp to 28 days after CABA-201 infusionAn AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal result of an investigation), symptom, or disease (new or exacerbated) temporally associated with the use of study treatment. The term AE is used to include both serious and non-serious AEs.
Primary (Part B: Dose Expansion) incidence of and severity of adverse events in order to confirm the dose(s) of CABA-201Up to 28 days after CABA-201 infusionAn AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal result of an investigation), symptom, or disease (new or exacerbated) temporally associated with the use of study treatment. The term AE is used to include both serious and non-serious AEs.

Secondary

MeasureTime frameDescription
Part A and Part B: To evaluate the incidence and severity of adverse eventsUp to 156 weeks after CABA-201 infusionAn AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal result of an investigation), symptom, or disease (new or exacerbated) temporally associated with the use of study treatment. The term AE is used to include both serious and non-serious AEs.
Part A and Part B: To characterize the pharmacodynamics (PD)Up to 156 weeks after CABA-201 infusionLevels of B cells in the blood
Part A and Part B: To characterize the pharmacokinetics (PK)Up to 156 weeks after CABA-201 infusionLevels of CABA-201-positive T cells in the blood
Part A and Part B: To evaluate disease related biomarkersUp to 156 weeks after CABA-201 infusionLevels of MS biomarkers in the blood and CSF
Part A and Part B: To evaluate the effects of CABA-201 on MS disease activity as measured by Magnetic Resonance Imaging (MRI)Up to 156 weeks after CABA-201 infusionIncidence of accumulated MS-related lesions
Part A and Part B: The effects of CABA-201 on MS disease activity as measured by EDSSUp to 156 weeks after CABA-201 infusionThe EDSS is a scale for assessing neurologic impairment in MS. Values are from 0 points (normal neurological examination) up to 10 points (death). Higher scores represent increased disability.
Part A and Part B: To evaluate the effect of CABA-201 on use of subsequent MS-related therapyUp to 156 weeks after CABA-201 infusionProportion of participants who require no subsequent MS-related immunomodulatory therapy
Part A and Part B: To evaluate the effect of CABA-201 on patient reported and health outcomes as measured by SF-36 v2Up to 156 weeks after CABA-201 infusionChange in SF-36 v2

Contacts

STUDY_CHAIRMedical Monitor

Cabaletta Bio

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 26, 2026