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Het Progressive Supranuclear Palsy Klinische Studieplatform - Regime B: LM11A-31

4 november 2026 bijgewerkt door: Adam Boxer

The Progressive Supranuclear Palsy Clinical Trial Platform (PTP) is a multi-center, multi-regimen clinical trial evaluating the safety and efficacy of investigational products for the treatment of PSP. Regimen B will evaluate the safety and efficacy of a single study drug, LM11A-31, in participants with PSP.

Studie Overzicht

Toestand

Aanmelden op uitnodiging

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

The Progressive Supranuclear Palsy Clinical Trial Platform (PTP) is designed as a perpetual platform trial. This means that there is a single Master Protocol dictating the conduct of the trial. The PTP Master Protocol is registered as NCT07173803. Once a participant enrolls into the Master Protocol and meets all eligibility criteria, the participant will be eligible to be randomized into any currently enrolling regimen. All participants will have an equal chance to be randomized to all regimens that are active at the time of screening. If a participant is randomized to Regimen B: LM11A-31, participants will complete a baseline assessment and be randomized in a 3:1 ratio to either active LM11A-31 or matching placebo. Participants must first enroll into the Master Protocol and be eligible to participate in the Master Protocol before being able to be randomly assigned to Regimen B. For a list of enrolling sites, please see the PTP Master Protocol under NCT07173803.

Studietype

Ingrijpend

Inschrijving (Geschat)

147

Fase

  • Fase 2

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

    • California
      • San Francisco, California, Verenigde Staten, 94158
        • University of California, San Francisco (UCSF), Memory and Aging Center

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

41 jaar tot 86 jaar (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  1. Clinical diagnosis of possible or probable PSP Richardson's Syndrome as defined by the 2017 Movement Disorder Society (MDS) criteria.
  2. Presence of PSP symptoms for ≤5 years at screening (based on the best judgment of the site PI).
  3. Mini-Mental State Examination (MMSE) score at screening of ≥25.
  4. Able to walk at least 10 steps with minimal assistance (e.g., one arm for safety, but not postural support).
  5. Stable doses of permitted medications as described per protocol for 30 days prior to screening.
  6. Resides at home or in the community (assisted living is acceptable).
  7. As assessed by the site PI, participant is likely to be able to comply with the protocol for the duration of the study, and has adequate vision, hearing (hearing aid permitted), and literacy (English or Spanish) sufficient for compliance with the required testing procedures.

Exclusion Criteria:

  1. Females who are breastfeeding or pregnant (as documented by a urine pregnancy test) during screening, or plan to become pregnant during the study.
  2. Females of childbearing potential who did not use a highly effective method of contraception within 28 days of screening and/or are not willing to use a highly effective method of contraception for the duration of their participation in the study.
  3. Lacks good venous access such that multiple blood draws would be precluded.
  4. Weighs less than 40kg, or more than 136kg at screening.
  5. Blood transfusion within 4 weeks of screening.
  6. Contraindications to MRI studies, including metal (ferromagnetic) implants, a cardiac pacemaker that is not compatible with MRI, and/or severe claustrophobia.
  7. Screening MRI scan showing structural evidence of alternative pathology not consistent with PSP that could explain a substantial portion of the participant's symptoms as indicated by the central MRI read.
  8. Any unstable and/or clinically significant medical condition likely to hamper the evaluation of safety and/or efficacy of study drug (e.g., clinically significant reduction in serum B12 or folate levels, clinically significant abnormalities of thyroid function, stroke, or other cerebrovascular or cardiovascular conditions), as per the site PI's judgment.
  9. History of severe allergic reaction (e.g., anaphylaxis) including but not limited to: severe allergic reaction to previous vaccines, foods, and/or medications.
  10. Hospitalization within 30 days prior to screening or baseline.
  11. Infections or major surgical procedures within 3 months prior to screening, judged to be clinically significant by the site PI.
  12. Myocardial infarction within 1 year prior to baseline, unstable angina pectoris, symptomatic congestive heart failure.
  13. History of cancer within the past 5 years other than treated skin squamous cell carcinoma, basal cell carcinoma, and melanoma in-situ, localized prostate cancer not requiring treatment, or prostate or breast cancer, which have been fully removed and are considered cured.
  14. History or presence of immunological or inflammatory conditions, including neurological disorders, meningitis or meningoencephalitis.
  15. History or presence of epilepsy requiring ongoing use of antiepileptic medications. Antiepileptic medications are permitted for pain or psychiatric use per the protocol.
  16. DSM-5 criteria for drug or alcohol abuse or dependence currently met within the past 5 years.
  17. Clinically significant abnormal vital signs including sustained sitting blood pressure >160/100 mm Hg.
  18. Diabetes mellitus with hemoglobin A1c (HbA1c) levels of ≥8.0%.
  19. Known history of human immunodeficiency virus (HIV-1 or 2).
  20. Known history of acute/chronic hepatitis B or C unless treated curatively.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Verviervoudigen

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Placebo-vergelijker: Bijpassende Placebo

Matching placebo is administered orally twice daily.

Experimenteel: Regime B: LM11A-31

LM11A-31 is administered orally twice daily.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Disease progression
Tijdsspanne: 52 weeks

Change in disease severity as measured by the 15-item modified Progressive Supranuclear Palsy Rating Scale (mPSPRS-15) in which the minimum score is 0 and the maximum score is 52, with higher scores indicating a worse outcome.

52 weeks

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Disease progression
Tijdsspanne: 52 weeks

Change in disease severity as measured by the 10-item modified Progressive Supranuclear Palsy Rating Scale (mPSPRS-10) in which the minimum score is 0 and the maximum score is 30, with higher scores indicating a worse outcome.

52 weeks
Disease progression
Tijdsspanne: 52 weeks

Change in disease severity as measured by the 28-item Progressive Supranuclear Palsy Rating Scale (28-item PSPRS) in which the minimum score is 0 and the maximum score is 100, with higher scores indicating a worse outcome.

52 weeks
Experiences of daily living
Tijdsspanne: 52 weeks

Change in experiences of daily living over time as measured by the Cortical Basal ganglia Functional Scale (CBFS) in which the minimum score is 0 and the maximum score is 124, with higher scores indicating a worse outcome.

52 weeks
Activities of daily living
Tijdsspanne: 52 weeks

Change in activities of daily living over time as measured by the Schwab and England Activities of Daily Living Scale (SE-ADL) in which the minimum score is 0% and the maximum score is 100%, with lower scores indicating a worse outcome.

52 weeks
Disease severity
Tijdsspanne: 52 weeks

Change in disease severity over time as measured by the Clinical Global Impression of disease severity (CGIds) using a 7-point scale, ranging from 1 (normal, not ill) to 7 (extremely ill), with a higher score indicating a worse outcome.

52 weeks
Disease progression
Tijdsspanne: 52 weeks

Change in disease severity over time as measured by the Clinical Global Impression of Change (CGIC) using a 7-point scale, ranging from 1 (very much improved) to 7 (very much worse), with a score of 4 indicating no change.

52 weeks
Health-related quality of life
Tijdsspanne: 52 weeks

Change in quality of life over time as measured by the EuroQoL 5 Dimension - 5 Level (EQ-5D-5L) questionnaire in which the minimum score is 0 and the maximum score is 1, with lower scores indicating a worse outcome.

52 weeks
Brain volume
Tijdsspanne: 52 weeks

Change in volume in midbrain, pontine and other regions over time as measured by volumetric MRI.

52 weeks
Neurodegeneration
Tijdsspanne: 52 weeks

Change in plasma neurofilament light chain (NfL) concentration.

52 weeks

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Medewerkers

Onderzoekers

  • Hoofdonderzoeker: Adam Boxer, MD, PhD, University of California, San Francisco
  • Hoofdonderzoeker: Anne-Marie Wills, MD, Massachusetts General Hospital
  • Hoofdonderzoeker: Irene Litvan, MD, University of California, San Diego
  • Hoofdonderzoeker: Julio Rojas-Martinez, MD, PhD, University of California, San Francisco

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

29 juli 2026

Primaire voltooiing (Geschat)

28 september 2030

Studie voltooiing (Geschat)

28 september 2030

Studieregistratiedata

Eerst ingediend

24 november 2025

Eerst ingediend dat voldeed aan de QC-criteria

24 november 2025

Eerst geplaatst (Werkelijk)

4 december 2025

Updates van studierecords

Laatste update geplaatst (Werkelijk)

5 november 2026

Laatste update ingediend die voldeed aan QC-criteria

4 november 2026

Laatst geverifieerd

1 november 2026

Meer informatie

Termen gerelateerd aan deze studie

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

JA

IPD delen Ondersteunend informatietype

  • LEERPROTOCOOL

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Ja

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .