ClinicalTrials.gg
Active, not recruitingNCT05228145CLN5-200Updated Aug 12, 2024

Gene Therapy Study for Children With CLN5 Batten Disease

A Phase 1/2 interventional study of NGN-101 in Neuronal Ceroid Lipofuscinosis CLN5, sponsored by Neurogene Inc.. Active, not recruiting at 2 sites in 2 countries. Open to participants aged 3 Years to 9 Years. Per ClinicalTrials.gov, last updated 2024-08-12.

Sponsored by Neurogene Inc. · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
6
Allocation
Non-randomized
Ages
3 Years to 9 Years
Sex
All
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Study summary

This is a prospective, non-randomized, open-label, dose escalation study of a single administration of gene therapy in children who are 3 to 9 years old with Neuronal Ceroid Lipofuscinosis (Batten) Subtype 5 (CLN5) disease.

Read the detailed description

The study is a first in human (FIH) open-label, dose escalation study designed to assess the safety and efficacy of administration of an adeno-associated viral vector serotype 9 (AAV9) carrying the gene encoding human ceroid-lipofuscinosis neuronal protein 5 (CLN5) in subjects with CLN5 Batten disease. The study treatment will be delivered via intracerebroventricular (ICV) and intravitreal (IVT) injection on the same day. Each participant will be followed for safety and efficacy for 5 years after treatment. Efficacy assessments in this study will evaluate motor, language, visual and cognitive function.

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Conditions studied

  • Neuronal Ceroid Lipofuscinosis CLN5

Keywords

  • Batten Disease
  • Neuronal Ceroid Lipofuscinosis Disease
  • Neuronal Ceroid Lipofuscinosis Subtype 5 Disease
  • NCL
  • Gene Therapy
  • Gene Transfer
  • CLN5
  • CLN
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In context

Neuronal Ceroid-Lipofuscinoses

49 studies on the registry are indexed under Neuronal Ceroid-Lipofuscinoses; 13 are open to participants now.

This study's enrollment of 6 is below the median of 13 across 22 interventional studies indexed under Neuronal Ceroid-Lipofuscinoses.

Browse Neuronal Ceroid-Lipofuscinoses studies →

Lead sponsor

Neurogene Inc. is the lead sponsor of 6 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
3 Years to 9 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age from 3 to 9 years (Child)
  • Molecular genetic diagnosis of the CLN5 gene
  • Confirmed clinical diagnosis of CLN5 disease
  • Impaired motor and/or language function and/or impaired visual acuity
  • Written from parent or legal guardian and assent from study participant, if appropriate
  • Able to comply with protocol required assessments (laboratory sample collection, lumbar puncture (LP), nerve conduction studies (NCS), magnetic resonance imaging (MRI), etc.), which may require sedation or general anesthesia
  • Able to walk with or without assistance (assistance may include a walker, braces, or with one hand held)
  • Agree to reside within a 1-hour drive of the study site for at least 6 months following treatment (or a safely drivable distance for the study participant and caregivers according to investigator's discretion)

Exclusion criteria

Exclusion Criteria

  • Has another neurologic disease or illness that may have caused cognitive decline before study entry
  • Known pathogenic or clinically suspected variant in a seizure associated genetic mutation besides CLN5
  • Any active infections or severe infections within the 30 days prior to study treatment administration
  • Presence of a concomitant medical condition that precludes intracerebroventricular (ICV) injection, lumbar puncture (LP), or use of anesthetics needed for study-related procedures
  • Presence of any concomitant medical conditions that preclude intravitreal (IVT) administration
  • Has status epilepticus that lasts longer than 5 minutes or having more than 1 seizure within a 5-minute period, without returning to a normal level of consciousness between episodes within 12 weeks before study treatment
  • Total anti-AAV9 antibody titer greater than 1:400
  • Any anticipated need for major surgery in the next 24 months
  • Participation in an New Drug, Investigational Device Exemption, or equivalent clinical study in the past 6 months
  • Any prior participation in a study in which a gene therapy vector or stem cell transplantation was administered
  • Participation in other investigational studies and non-interventional studies that have similar study assessments as this protocol while the study participant is enrolled in this study with the exception of sister studies sponsored by Neurogene
  • History of or current chemotherapy, radiotherapy, or other therapy within the past 3 months
  • Use of prohibited medications
  • Immunizations of any kind in the 45 days prior to study treatment
  • Requiring daytime or nighttime ventilatory support at the time of Screening
  • Any item which would exclude the study participant from being able to undergo brain magnetic resonance imaging (MRI) according to local institutional policy
  • Known allergies or to the required immunosuppression regime
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

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Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
6 participants (actual)

Study arms

  • Experimental
    Cohort 1

    The study treatment is a recombinant serotype 9 adeno-associated virus encoding a codon-optimized human CLN5 transgene (hCLN5opt).

    Genetic: NGN-101

  • Experimental
    Cohort 2

    The study treatment is a higher dose of recombinant serotype 9 adeno-associated virus encoding a codon-optimized human CLN5 transgene (hCLN5opt).

    Genetic: NGN-101

  • Experimental
    Cohort 3

    The study treatment is a higher dose of recombinant serotype 9 adeno-associated virus encoding a codon- optimized human CLN5 transgene (hCLN5opt).

    Genetic: NGN-101

Interventions

  • GeneticNGN-101

    Participants with confirmed mutations in the CLN5 gene who meet all the inclusion and none of the exclusion criteria will be treated with a single intracerebroventricular (ICV) dose and a single intravitreal (IVT) dose of the study treatment.

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What researchers measure

Primary outcomes

  1. Incidence of Treatment Emergent Adverse Events (TEAEs)

    Incidence, type, severity, and frequency of TEAEs

    Time frame: 5 years (multiple visits)

  2. Incidence of Serious Adverse Events (SAEs)

    Incidence, type, severity, and frequency of SAEs

    Time frame: 5 years (multiple visits)

  3. Incidence of clinical laboratory abnormalities

    Incidence, type, severity, and frequency of clinical laboratory abnormalities

    Time frame: 5 years (multiple visits)

  4. Incidence of new nerve conduction study (NCS) abnormalities

    Incidence, type, severity, and frequency of new nerve conduction study (NCS) abnormalities

    Time frame: 5 years (multiple visits)

  5. Incidence of new physical and neurologic exam abnormalities

    Incidence, type, severity, and frequency of new physical and neurologic exam abnormalities

    Time frame: 5 years (multiple visits)

Secondary outcomes

  1. Change in Hamburg Scale, Motor and Language domain scores

    Change from baseline in Hamburg Scale, Motor and Language domain scores (each domain is rated from 0 to 3, with 3 reflecting normal function for age and 0 reflecting complete loss of function)

    Time frame: 5 years (multiple visits)

  2. Change in Spectral Domain-Optical Coherence Tomography (SD-OCT)

    Change from baseline in SD-OCT parameters including Ellipsoid Zone (EZ) defect area measurements, macular volume and thickness, retinal nerve fiber layer thickness, and ganglion cell layer thickness

    Time frame: 5 years (multiple visits)

  3. Change in Unified Batten Diseases Rating Scale (UBDRS)

    Change from baseline in total score and individual domains of the Unified Batten Diseases Rating Scale (UBDRS; total score 0 to 277, with higher scores indicating worse function)

    Time frame: 5 years (multiple visits)

  4. Change in Caregiver global impression of change

    Caregiver global impression of change throughout the study

    Time frame: 5 years (multiple visits)

  5. Change in visual acuity measurements

    Change from baseline in visual acuity measured using Teller acuity cards, Lea symbol chart, Landolt C chart, or low contrast visual acuity (measure to be used will depend on subject's level of cognitive and visual function)

    Time frame: 5 years (multiple visits)

  6. Change in color vision

    Change from baseline in color vision measured using Ishihara color blindness testing

    Time frame: 5 years (multiple visits)

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Study locations

2 sites
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References and documents

Publications

  • Murray SJ, Wellby MP, Barrell GK, Russell KN, Deane AR, Wynyard JR, Gray SJ, Palmer DN, Mitchell NL. Efficacy of dual intracerebroventricular and intravitreal CLN5 gene therapy in sheep prompts the first clinical trial to treat CLN5 Batten disease. Front Pharmacol. 2023 Oct 24;14:1212235. doi: 10.3389/fphar.2023.1212235. eCollection 2023. PubMed 37942487 ↗
  • Mitchell NL, Murray SJ, Wellby MP, Barrell GK, Russell KN, Deane AR, Wynyard JR, Palmer MJ, Pulickan A, Prendergast PM, Casy W, Gray SJ, Palmer DN. Long-term safety and dose escalation of intracerebroventricular CLN5 gene therapy in sheep supports clinical translation for CLN5 Batten disease. Front Genet. 2023 Aug 8;14:1212228. doi: 10.3389/fgene.2023.1212228. eCollection 2023. PubMed 37614821 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 12, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05228145
Lead sponsor
Neurogene Inc.
Responsible party
Sponsor
First posted
Feb 8, 2022
Start date
Jan 31, 2022
Primary completion
Nov 2028 (estimated)
Completion
Nov 2028 (estimated)
Last update
Aug 12, 2024

Study contacts

Effie Albanis, MD
study director · Neurogene Inc.

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Aug 2024. You cannot join it, but the record below documents what was studied.

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