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A Trial of ONO-2808 in Participants With the Parkinsonian Subtype of Multiple System Atrophy (MSA-P)

13. september 2026 opdateret af: Ono Pharmaceutical Co., Ltd.

A Phase 3, Randomized, Double-blind, Placebo-controlled Study of ONO-2808 in Participants With the Parkinsonian Subtype of Multiple System Atrophy (MSA-P)

The main goal of this clinical trial is to learn if ONO-2808 works to treat adults with the Parkinsonian subtype of Multiple System Atrophy (MSA-P). Researchers will compare ONO-2808 to a placebo (a look-alike substance that contains no drug) to see if ONO-2808 works to treat MSA-P.

Participants will:

  • Take ONO-2808 or placebo orally for up to 48 weeks
  • Make visits to the clinic for checkups and tests
  • Answer questions about their health throughout the trial.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

486

Fase

  • Fase 3

Kontakter og lokationer

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

Studiekontakt

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

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Key Inclusion Criteria:

  • Participants with a diagnosis of clinically established or clinically probable MSA-P according to the 2022 Movement Disorder Society (MDS) criteria for MSA diagnosis.
  • Participants in the early stages of the disease, defined as a maximum of 5 years since the onset of one of the following symptoms associated with MSA-P:

    • Parkinsonism
    • Orthostatic hypotension
    • Urinary dysautonomia
  • Participants with an anticipated survival of at least 3 years in the opinion of the Investigator.
  • Participants who are able to ambulate without the assistance of another person, defined as the ability to take at least 10 steps and then to turn around and walk at least another 10 steps. Use of assistive devices (eg, walker or cane) is allowed.
  • Ability to swallow oral medication and willingness to adhere to the study drug regimen.
  • Normal range of laboratory values at screening and baseline, especially liver function tests.
  • Participants receiving treatment (including chronic medications, and herbal or dietary supplements) for symptoms associated with MSA must be on a stable dosage for at least 60 days prior to randomization based on the judgment of the Investigator. Participants must not initiate new treatment within 60 days prior to randomization.

Key Exclusion Criteria:

  • Participants with the cerebellar subtype of MSA according to the 2022 MDS criteria for MSA diagnosis.
  • Female participants who are pregnant, planning to become pregnant during the study, or breastfeeding.
  • Participants with a clinically significant or unstable medical or surgical condition other than MSA-P that, in the opinion of the Investigator, might preclude safe completion of the study or might affect the results of the study (eg, pulmonary, cardiovascular [including bradyarrhythmia], macular edema, and significant renal or hepatic dysfunction).
  • Neurological diseases/disorders other than MSA-P, such as Parkinson's disease, dementia with Lewy bodies, essential tremor, progressive supranuclear palsy, spinocerebellar ataxia, spastic paraparesis, corticobasal degeneration, or vascular, normal pressure hydrocephalus, pharmacological, or postencephalitic parkinsonism.
  • Any abnormalities, other than MSA, found on the centrally read brain MRI that, in the opinion of the Investigator, may constitute a confounder for the study or preclude safe participation.
  • Participants with documented liver diseases, cirrhosis, prior drug-induced liver injury (DILI), or ascites or symptoms and signs of encephalopathy due to hepatic dysfunction.

Other protocol-defined inclusion and exclusion criteria apply.

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: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Placebo komparator: Placebo
Matching placebo will be administered to participants orally once daily for 48 weeks.
Eksperimentel: ONO-2808 Low Dose
ONO-2808 will be administered to participants orally once daily for 48 weeks.
Eksperimentel: ONO-2808 High Dose
ONO-2808 will be administered to participants orally once daily for 48 weeks.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Change from Baseline in modified United Multiple System Atrophy Rating Scale (mUMSARS) Part I (excluding Item 11) with Collapsed Scoring (0-3)
Tidsramme: Baseline, Week 48
Baseline, Week 48

Sekundære resultatmål

Resultatmål
Tidsramme
Change from Baseline in Multiple System Atrophy Quality of Life Scale (MSA-QoL) Motor Subscale Score
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in Magnetic Resonance Imaging (MRI) Volumetric Assessments
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in Total United Multiple System Atrophy Rating Scale (UMSARS) Score (Part I and Part II, all items)
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in mUMSARS Score
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in MSA-QoL Total Score
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in Patient Global Impression of Change (PGI-C) Score
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in Patient Global Impression of Severity (PGI-S) Score
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in Clinical Global Impression of Change (CGI-C) Score
Tidsramme: Baseline, Week 48
Baseline, Week 48
Change from Baseline in Clinical Global Impression of Severity (CGI-S) Score
Tidsramme: Baseline, Week 48
Baseline, Week 48

Samarbejdspartnere og efterforskere

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

Sponsor

Samarbejdspartnere

Efterforskere

  • Studieleder: Clinical Team, Ono Pharmaceutical Co., Ltd.

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)

1. januar 2027

Primær færdiggørelse (Anslået)

1. oktober 2029

Studieafslutning (Anslået)

1. oktober 2029

Datoer for studieregistrering

Først indsendt

13. september 2026

Først indsendt, der opfyldte QC-kriterier

13. september 2026

Først opslået (Faktiske)

17. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

17. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

13. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • ONO-2808-03-001

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

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .