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Phase I/II Study of JR-441 in Patients With Mucopolysaccharidosis Type IIIA

Phase I/II Study of Weekly Infusions of JR-441 in Patients With Mucopolysaccharidosis Type IIIA

Status
Active, not recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06095388
Enrollment
15
Registered
2023-10-23
Start date
2023-10-04
Completion date
2029-10-31
Last updated
2026-09-04

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

Conditions

Mucopolysaccharidosis III-A

Brief summary

A Phase I/ II, open-label, randomized, 2-arm study, designed to evaluate the safety and explore efficacy of the study drug in development for the treatment of MPS IIIA patients.

Interventions

DRUGJR-441

IV infusion

Sponsors

JCR Pharmaceuticals Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
1 Years to 18 Years
Healthy volunteers
No

Inclusion criteria

* Chronological age of ≥1 year and ≤18 years. * Confirmed diagnosis of MPS IIIA. * Body weight ≥ 10 kg.

Exclusion criteria

* Prior experience to gene therapy or HSCT with successful engraftment. * Past use of another investigational drug or product in last 4 months or 5 half-lives (whichever is longer) before signing ICF. * Current participation in a clinical trial or past participation (within 30 days of enrolment into this study) in a study involving invasive procedures. * Past use of Genistein or Kineret (anakinra) within 4 months before signing ICF. * Serious drug allergy or hypersensitivity. * Contraindication for lumbar puncture or MRI. * History of bleeding disorder or current use of medications that, in the opinion of the investigator, place them at risk of bleeding following lumbar puncture. The above information is not intended to contain all considerations relevant to a patient's potential participation in this clinical trial.

Design outcomes

Primary

MeasureTime frameDescription
To evaluate the tolerability of JR-441 in MPSIIIA patientsup to 5 years (multiple visits)Adverse events will be reported and graded, laboratory tests will be conducted and vital signs will be monitored
To assess the safety of JR-441 in MPSIII-A patientsup to 5 years (multiple visits)Number and severity of infusion-associated reactions, including anaphylaxis

Secondary

MeasureTime frameDescription
Plasma drug concentrationup to 5 years (multiple visits)
Plasma PK parametersup to 5 years (multiple visits)
Change from baseline in heparan sulfate levels in cerebrospinal fluid (CSF), serum and urineup to 5 years (multiple visits)
Change from baseline in cognitive functionup to 5 years (multiple visits)Bayley Scales of Infant and Toddler Development, Third Edition (BSID-III) and/or Kaufman Assessment Battery for Children, Second Edition (KABC-II)

Countries

Germany

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 5, 2026