Gene Therapy for IGHMBP2-Related Diseases

September 24, 2025 updated by: Megan Waldrop

Phase I/IIa Intrathecal Gene Delivery Clinical Trial for IGHMBP2-Related Diseases

Open-label, single intrathecal injection study of a AAV9 vector carrying the IGHMBP2 gene for IGHMBP2-related diseases.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Enrolling by invitation

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.

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 (Estimated)

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.
10

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
    • Ohio
      • Columbus, Ohio, United States, 43205
        • Nationwide Children's 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

2 months to 14 years (Child)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Confirmation of two pathogenic variants in the IGHMBP2 gene from a CLIA-certified lab
  • Pre-ambulant (not yet walking and less than 18 months) or ambulant (as defined by the ability to walk 10 meters without assistance) or non-ambulant (inability to walk more than 10 meters unassisted)
  • Ability to cooperate with functional assessments as per PI's discretion

Exclusion Criteria:

  • Prior participation in a gene or cell therapy program for any kind.
  • Immunizations of any kind in the month prior to the study.
  • Active infection based on clinical observations
  • Serological evidence of HIV infection, or Hepatitis B or C infection
  • Diagnosis of (or ongoing treatment for) an autoimmune disease
  • Persistent leukopenia or leukocytosis (WBC ≤ 3.5 10^3/μL or ≥ 20.0 10^3/μL) or an absolute neutrophil count < 1.5 10^3/μL
  • Abnormal liver function as indicated by an elevated GGT (>2X normal if no other laboratory abnormalities), bilirubin and/or abnormal PT/INR
  • Concomitant illness or requirement for chronic drug treatment that in the opinion of the PI creates unnecessary risks for gene transfer
  • AAV9 binding antibody titers > 1:50 as determined by ELISA immunoassay performed by Athena Diagnostics
  • Abnormal laboratory values in the clinically significant range, based upon normal values in the Nationwide Children's Hospital Laboratory
  • Diagnosis of any other systemic illness that increases the risk of gene transfer per the PI's opinion; Has a medical condition or extenuating circumstance that, in the opinion of the PI, might compromise the subject's ability to comply with the protocol required testing or procedures or compromise the subject's well-being, safety, or clinical interpretability
  • Any requirement for immune modulatory therapy and for which it would be unsafe for the subject to undergo an appropriate wash out period
  • Contraindication for intrathecal injection
  • A positive JCV antibody test of >0.40

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: Single Intrathecal Delivery
Biological: Gene Therapy
AAV9 carrying the IGHMBP2 gene.

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
Monitoring for the development of unacceptable toxicity.
Time Frame: 3 years
Unacceptable toxicity is defined as the occurrence of two or more unexpected Grade III or higher treatment-related toxicities, as defined by CTCAE 5.0.
3 years

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
Time Frame
For pre-ambulant participants, ages less than 18 months, change in the Neuromuscular Gross Motor Outcome (GRO) from baseline
Time Frame: Days 90 and 180, Months 12, 18, 24 and 36
Days 90 and 180, Months 12, 18, 24 and 36
For ambulant participants, change in the 100-meter timed test from baseline
Time Frame: Days 90 and 180, Months 12, 18, 24 and 36
Days 90 and 180, Months 12, 18, 24 and 36
For non-ambulant participants, ages 18 months to 6 years, change in the Neuromuscular Gross Motor Outcome (GRO) from baseline
Time Frame: Days 90 and 180, Months 12, 18, 24 and 36
Days 90 and 180, Months 12, 18, 24 and 36
For non-ambulant participants, ages greater than 6 years, change in the revised upper limb module for SMA (RULM) from baseline
Time Frame: Days 90 and 180, Months 12, 18, 24 and 36
Days 90 and 180, Months 12, 18, 24 and 36

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.
Megan Waldrop

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.
Alcyone Therapeutics

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Megan Waldrop, MD, Nationwide Children's Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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.
November 4, 2021

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.
July 1, 2028

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.
July 1, 2030

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).
November 25, 2021

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.
December 7, 2021

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.
December 10, 2021

Study Record Updates

Last Update Posted (Estimated)

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.
September 30, 2025

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.
September 24, 2025

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.
September 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

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.
  • STUDY00002143

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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