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CareCN: A phase I/II, open-label, study to evaluate the safety and efficacy of an intravenous injection of GNT0003 (Adeno-associated Viral Vector expressing the UGT1A1 transgene) in patients with severe Crigler-Najjar syndrome requiring phototherapy

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-507007-60-00
Acronym
GNT-012-CRIG
Enrollment
17
Registered
2023-11-07
Start date
2018-04-09
Completion date
Unknown
Last updated
2025-12-12

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

Conditions

severe Crigler-Najjar syndrome in patients requiring phototherapy

Brief summary

Dose escalation part: Incidence of treatment-emergent adverse events (TEAEs) or treatment-emergent serious adverse events (TESAEs) up to Week 17, Dose escalation part: Change in laboratory parameters, vital signs and in physical examination from baseline to Week 17, Confirmatory part: The proportion of patients having received the selected dose of GNT0003 with serum total bilirubin ≤ 300 µmol/L at Week 48 after IMP infusion and without phototherapy from Week 16

Detailed description

Dose escalation part: Time to GNT0003 vector clearance from blood, urine, saliva and feces, Dose escalation part: Number of patients with serum total bilirubin ≤ 300 µmol/L within 7 days after interruption of daily phototherapy, Confirmatory part: Incidence of treatment-emergent adverse events (TEAEs) or treatment-emergent serious adverse events (TESAEs) up to Week 48, Confirmatory part: Change in laboratory parameters, vital signs and in the physical examination from baseline up to Week 48, Confirmatory part: Change in serum total bilirubin from baseline up to Week 48, Confirmatory part: Change in bilirubin/albumin ratio from baseline up to Week 48, Confirmatory part: Change in Health-related quality of life as measured by QOL questionnaires, SF-36 (adult) and PedsQL (pediatric), and by the quality of sleep questionnaire from baseline up to Week 48., Confirmatory part: Time to GNT0003 vector clearance from blood, urine, saliva and feces, Proportion of patients achieving sustained discontinuation of phototherapy up to 120 months, with assessment of: Duration of phototherapy discontinuation, Time to phototherapy restart (if applicable), Daily duration of phototherapy after restart., Proportion of patients achieving sustained discontinuation of phototherapy up to Week 48, with assessment of: - Duration of phototherapy discontinuation, - Time to phototherapy restart (if applicable), - Daily duration of phototherapy after restart.

Interventions

DRUGSIROLIMUS
DRUGPREDNISOLONE
DRUGAMOXICILLIN
DRUGPREDNISONE
DRUGMETHYLPREDNISOLONE

Sponsors

Genethon
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
0 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Dose escalation part: Incidence of treatment-emergent adverse events (TEAEs) or treatment-emergent serious adverse events (TESAEs) up to Week 17, Dose escalation part: Change in laboratory parameters, vital signs and in physical examination from baseline to Week 17, Confirmatory part: The proportion of patients having received the selected dose of GNT0003 with serum total bilirubin ≤ 300 µmol/L at Week 48 after IMP infusion and without phototherapy from Week 16

Secondary

MeasureTime frame
Dose escalation part: Time to GNT0003 vector clearance from blood, urine, saliva and feces, Dose escalation part: Number of patients with serum total bilirubin ≤ 300 µmol/L within 7 days after interruption of daily phototherapy, Confirmatory part: Incidence of treatment-emergent adverse events (TEAEs) or treatment-emergent serious adverse events (TESAEs) up to Week 48, Confirmatory part: Change in laboratory parameters, vital signs and in the physical examination from baseline up to Week 48, Confirmatory part: Change in serum total bilirubin from baseline up to Week 48, Confirmatory part: Change in bilirubin/albumin ratio from baseline up to Week 48, Confirmatory part: Change in Health-related quality of life as measured by QOL questionnaires, SF-36 (adult) and PedsQL (pediatric), and by the quality of sleep questionnaire from baseline up to Week 48., Confirmatory part: Time to GNT0003 vector clearance from blood, urine, saliva and feces, Proportion of patients achieving sustained disc

Countries

France, Italy, Netherlands

Outcome results

None listed

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