Personalized Antisense Oligonucleotide for A Single Participant With UBTF Gene Mutation

May 6, 2026 updated by: n-Lorem Foundation

An Open-label Single Center, Single Participant Study of an Experimental Antisense Oligonucleotide Treatment for Childhood-Onset Neurodegeneration With Brain Atrophy (CONDBA) Caused by UBTF Gene Mutation

This research project entails delivery of a personalized antisense oligonucleotide (ASO) drug designed for a single participant with Childhood-Onset Neurodegeneration with Brain Atrophy (CONDBA) due to a heterozygous missense gain-of-function mutation in UBTF

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is an interventional study to evaluate the safety and efficacy of treatment with an individualized antisense oligonucleotide (ASO) treatment in a single participant with CONDBA due to a pathogenic heterozygous missense gain-of-function mutation in UBTF

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
1

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Massachusetts
      • Boston, Massachusetts, United States, 02114
        • Massachusetts General Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Informed consent/assent provided by the participant (when appropriate), and/or participant's parent(s) or legally authorized representative(s)
  • Ability to travel to the study site and adhere to study-related follow-up examinations and/or procedures and provide access to participant's medical records
  • Genetically confirmed CONDBA due to UBTF gene mutation

Exclusion Criteria:

  • Participant has any condition that in the opinion of the Site Investigator, would ultimately prevent the completion of study procedures

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Open Label
Drug: nL-UBTF-001
Personalized antisense oligonucleotide

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Gross Motor Function
Time Frame: Baseline to 24-months
Change in gross motor function from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by Brief Ataxia Rating Scale (BARS)
Baseline to 24-months
Gross Motor Function
Time Frame: Baseline to 24-months
Change in gross motor function from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by wrist/ankle accelerometers
Baseline to 24-months
Gross Motor Function
Time Frame: Baseline to 24-months
Change in gross motor function from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by Gross Motor Function Measure-88 (GMFM-88)
Baseline to 24-months
Gross Motor Function
Time Frame: Baseline to 24-months
Change in gross motor function from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by Vineland Adaptive Behavior Scales - Third Edition (Vineland-3)
Baseline to 24-months
Gross Motor Function
Time Frame: Baseline to 24-months
Change in gross motor function from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by home gait video assessments
Baseline to 24-months
Ataxia
Time Frame: Baseline to 24-months
Change in ataxia from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by Brief Ataxia Rating Scale (BARS)
Baseline to 24-months
Ataxia
Time Frame: Baseline to 24-months
Change in ataxia from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by wrist/ankle accelerometers
Baseline to 24-months
Ataxia
Time Frame: Baseline to 24-months
Change in ataxia from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by Gross Motor Function Measure-88 (GMFM-88)
Baseline to 24-months
Ataxia
Time Frame: Baseline to 24-months
Change in ataxia from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by Vineland Adaptive Behavior Scales - Version 3 (Vineland-3)
Baseline to 24-months
Ataxia
Time Frame: Baseline to 24-months
Change in ataxia from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by home gait video assessment
Baseline to 24-months
Quality of Life
Time Frame: Baseline to 24-months
Change in quality of life from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by Pediatric Quality of Life Inventory (PedsQL) Family Impact Module
Baseline to 24-months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Feeding Skills
Time Frame: Baseline to 24-months
Change in feeding skills from baseline to 6-, 12-, 18-, and 24-months post nL-UBTF-001 administration as measured by feeding and swallow assessments
Baseline to 24-months
Safety and Tolerability
Time Frame: Baseline to 24-months
Incidence and severity of treatment-emergent adverse events (AEs) post nL-UBTF-001 administration
Baseline to 24-months

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Brain Structure
Time Frame: Baseline to 24-months
Change in brain structure from baseline to 12- and 24-months post nL-UBTF-001 administration as captured by brain magnetic resonance imaging (MRI)
Baseline to 24-months
Brain Atrophy
Time Frame: Baseline to 24-months
Change in brain atrophy from baseline to 12- and 24-months post nL-UBTF-001 administration as captured by brain magnetic resonance imaging (MRI)
Baseline to 24-months
Myelination Patterns
Time Frame: Baseline to 24-months
Change in myelination patterns from baseline to 12- and 24-months post nL-UBTF-001 administration as captured by brain magnetic resonance imaging (MRI)
Baseline to 24-months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
n-Lorem Foundation

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Massachusetts General Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 5, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 6, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 15, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 15, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2024P002134

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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