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A Phase I/II Trial of JR-446 in Mucopolysaccharidosis Type IIIB (MPS IIIB)

8. juni 2026 opdateret af: JCR Pharmaceuticals Co., Ltd.

A Global, Open-Label, Phase I/II Trial, to Evaluate Safety, Tolerability, Pharmacodynamic and Preliminary Efficacy of JR-446 in Mucopolysaccharidosis Type IIIB (MPS IIIB)

This is a global, open-label, Phase I/II, interventional trial in participants younger than 6 years of age with Mucopolysaccharidosis Type IIIB (MPS IIIB), designed to assess the safety and tolerability of JR-446, determine its pharmacodynamic effects, and explore its potential to demonstrate early clinical effects on disease-relevant outcomes.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

12

Fase

  • Fase 2
  • Fase 1

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Det Forenede Kongerige
      • London, Det Forenede Kongerige, WC1N 3JH
        • Great Ormond Street Hospital For Children
        • Kontakt:
  • Forenede Stater
    • California
      • Oakland, California, Forenede Stater, 94609
        • Children's Hospital Oakland Research Institution, Attn: 2900 Wing
        • Kontakt:
    • Pennsylvania
      • Pittsburgh, Pennsylvania, Forenede Stater, 15224
        • UPMC Children's Hospital of Pittsburgh
        • Kontakt:
    • Virginia
      • Fairfax, Virginia, Forenede Stater, 22030
        • Lysosomal and Rare Disorders Research and Treatment Center (LDRTC)
        • Kontakt:
  • Tyskland
      • Hamburg, Tyskland, 20246
        • University Medical Center Hamburg-Eppendorf
        • Kontakt:
          • Nicole Maria Muschol
          • Telefonnummer: +49 (0) 40 7410 53714
          • E-mail: muschol@uke.de

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  1. Patients with confirmed MPS IIIB with a phenotype of MPS IIIB that is not classified as slowly progressive (i.e., not attenuated).
  2. A chronological age <6 years.
  3. Ability to complete and achieve a Standard score ≥55, using either Bailey Scale of Infant Development-4 (BSID-4) Cognitive domain or Kaufman Assessment Battery for Children-II (KABC-II) Non-Verbal Index, whichever tool is most appropriate for the participant's chronological age.

Exclusion Criteria:

  1. Contraindication for lumbar puncture or MRI.
  2. A participant who has a medical condition or extenuating circumstance that, in the opinion of the principal investigator or sub-investigator, might compromise the participant's ability to comply with protocol requirements, the participant's well-being or safety, or the interpretability of the participant's clinical data.
  3. A participant who has received any other investigational drug product (including but not limited to, tralesinidase alfa enzyme replacement therapy [TA-ERT], Genistein, KINERET [anakinra], ambroxol, miglustat) within 4 months (or 5 half-lives, whichever is longer) before the time of providing informed consent.
  4. A participant who has received gene therapy treatment or hematopoietic stem cell transplantation (HSCT) with successful engraftment.
  5. Serious drug allergy or hypersensitivity to any components of JR-446 or medications likely prescribed during the trial.
  6. A participant has a 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.
  7. A patient with recurrent epileptic seizures not adequately controlled with anti-seizure medication, and which, in the clinical judgment of the principal investigator, would preclude safe participation in the trial.
  8. Serology consistent with human immunodeficiency virus (HIV) exposure or consistent with active hepatitis B (HepB) or hepatitis C (HepC) infection.
  9. A participant/family, who, in the opinion of the investigator, may not be able to comply with protocol requirements and cooperate fully with the trial assessments, procedures, and scheduling for JR-446 IMP dose administrations.
  10. Study participants for whom informed consent is unable to be provided by a parent or legal guardian; or when applicable for a study participant who is unable to provide assent with respect to study participation in conjunction with parental or legal guardian consent for participation on study.

The above information is not intended to contain all considerations relevant to a patient's potential participation in this clinical trial.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: JR-446
Arm: 1
Medicin: JR-446
IV infusion

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
To establish the safety and tolerability of JR-446 in MPS IIIB patients following repeated dose administration
Tidsramme: Up to 1 year (multiple visits)
Incidence and severity of treatment-emergent adverse events; Incidence and severity of infusion-associated reactions; Incidence of clinically significant changes/abnormalities in safety laboratory tests, vital signs, and electrocardiogram.
Up to 1 year (multiple visits)

Sekundære resultatmål

Resultatmål
Tidsramme
Change From Baseline in Cerebrospinal Fluid Heparan Sulfate Concentration
Tidsramme: Through Week 53 (up to 1 year; multiple visits)
Through Week 53 (up to 1 year; multiple visits)
Absolute Change From Baseline in Serum Heparan Sulfate Concentration
Tidsramme: Through Week 53 (up to 1 year; multiple visits)
Through Week 53 (up to 1 year; multiple visits)
Percent Change From Baseline in Serum Heparan Sulfate Concentration
Tidsramme: Through Week 53 (up to 1 year; multiple visits)
Through Week 53 (up to 1 year; multiple visits)
Absolute Change From Baseline in Urine Heparan Sulfate Concentration
Tidsramme: Through Week 53 (up to 1 year; multiple visits)
Through Week 53 (up to 1 year; multiple visits)
Percent Change From Baseline in Urine Heparan Sulfate Concentration
Tidsramme: Through Week 53 (up to 1 year; multiple visits)
Through Week 53 (up to 1 year; multiple visits)
Absolute Change From Baseline in Serum Neurofilament Light Chain Concentration
Tidsramme: Through Week 53 (up to 1 year; multiple visits)
Through Week 53 (up to 1 year; multiple visits)
Percent Change From Baseline in Serum Neurofilament Light Chain Concentration
Tidsramme: Through Week 53 (up to 1 year; multiple visits)
Through Week 53 (up to 1 year; multiple visits)
Change in Cognitive Function Assessments From Baseline
Tidsramme: Through Week 53 (up to 1 year)
Through Week 53 (up to 1 year)
Change in Brain MRIs From Baseline
Tidsramme: Through Week 53 (up to 1 year)
Through Week 53 (up to 1 year)
Change in Height Standard Deviation Score (SDS) From Baseline (using WHO child growth standards)
Tidsramme: Through Week 53 (up to 1 year)
Through Week 53 (up to 1 year)
Change in Weight SDS From Baseline (using WHO child growth standards)
Tidsramme: Through Week 53 (up to 1 year)
Through Week 53 (up to 1 year)
Change in Body Mass Index (BMI) SDS From Baseline (using WHO child growth standards)
Tidsramme: Through Week 53 (up to 1 year)
Through Week 53 (up to 1 year)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

JCR Pharmaceuticals Co., Ltd.

Samarbejdspartnere

MEDIPAL HOLDINGS CORPORATION

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

18. juni 2026

Primær færdiggørelse (Anslået)

30. juni 2028

Studieafslutning (Anslået)

30. september 2028

Datoer for studieregistrering

Først indsendt

14. maj 2026

Først indsendt, der opfyldte QC-kriterier

8. juni 2026

Først opslået (Faktiske)

11. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

11. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • JR-446-201

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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Kliniske forsøg med Mucopolysaccharidosis IIIB

Kliniske forsøg med JR-446

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

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Betingelser

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Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

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