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GAIN-CTNNB1: A Phase I/II open-label trial to evaluate the safety, tolerability, and preliminary efficacy of a single intracerebroventricular administration of an AAV9-based gene replacement therapy in paediatric patients with CTNNB1 syndrome

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-522719-40-00
Acronym
GAIN-CTNNB1
Enrollment
12
Registered
2025-11-03
Start date
2025-11-21
Completion date
Unknown
Last updated
2025-12-04

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

Conditions

CTNNB1 syndrome

Brief summary

Incidence, severity, and causality of adverse events and serious adverse events., Occurrence of clinically significant abnormalities in blood (blood count, renal function, liver function, coagulation), urine or CSF compared to baseline., Occurrence of clinically significant changes in cardiorespiratory parameters from baseline., Occurrence of new clinically significant cardiovascular abnormalities on 12-lead electrocardiogram (ECG) or echocardiogram., Occurrence of clinically significant electroencephalographic changes from baseline (EEG)., Occurrence of clinically significant changes in head circumference and significant volumetric changes on MRI brain., Presence of antibodies for AAV9 in serum.

Detailed description

To assess the preliminary efficacy of URBAGEN as a single ICV administration in pediatric patients with CTNNB1 syndrome.

Interventions

DRUGURBAGEN

Sponsors

Fundacija CTNNB1 Ustanova Za Raziskave Na Podrocju Genske Terapije
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
0 Years to 17 Years

Design outcomes

Primary

MeasureTime frame
Incidence, severity, and causality of adverse events and serious adverse events., Occurrence of clinically significant abnormalities in blood (blood count, renal function, liver function, coagulation), urine or CSF compared to baseline., Occurrence of clinically significant changes in cardiorespiratory parameters from baseline., Occurrence of new clinically significant cardiovascular abnormalities on 12-lead electrocardiogram (ECG) or echocardiogram., Occurrence of clinically significant electroencephalographic changes from baseline (EEG)., Occurrence of clinically significant changes in head circumference and significant volumetric changes on MRI brain., Presence of antibodies for AAV9 in serum.

Secondary

MeasureTime frame
To assess the preliminary efficacy of URBAGEN as a single ICV administration in pediatric patients with CTNNB1 syndrome.

Countries

Slovenia

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026