A Study to Assess the Efficacy, Safety, and Pharmacokinetics of FNP-223 to Slow Progression of Progressive Supranuclear Palsy (PSP)

NCT ID: NCT06355531

Last Updated: 2025-10-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE2

Total Enrollment

241 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-07-23

Study Completion Date

2026-11-30

Brief Summary

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PROSPER trial is a trial to assess the efficacy of FNP-223 in slowing disease progression in participants with PSP as measured by the PSP Rating Scale (PSPRS) over 52 weeks and to assess the safety and tolerability of FNP-223 for 52 weeks in participants with PSP.

Detailed Description

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Conditions

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Progressive Supranuclear Palsy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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FNP-223

Participants will receive FNP-223 orally (PO), 3 times daily (TID).

Group Type EXPERIMENTAL

FNP-223

Intervention Type DRUG

Oral tablets

Placebo

Participants will receive matching placebo, PO, TID.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Oral tablets

Interventions

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FNP-223

Oral tablets

Intervention Type DRUG

Placebo

Oral tablets

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Male or female participants aged 50 to 80 years, inclusive, at the time of informed consent.
* Diagnosis of possible or probable PSP of the Richardson's Syndrome (PSP-RS) phenotypes according to the Movement Disorders Society's Progressive Supranuclear Palsy (MDS PSP) clinical features criteria. At least 1 (either 1 or both) of the following 2 items must be met:

1. Vertical supranuclear gaze palsy.
2. Slowing of vertical saccades AND postural instability with falls within the first 3 years of PSP symptoms.
* Presence of PSP symptoms within ≤3 years prior to screening.
* MoCA score ≥23
* Full 28-item PSPRS score ≤40.
* Able to ambulate independently or with minimal assistance defined as the ability to take at least 10 steps (stabilization of 1 arm \[ie, use of cane\]).
* Body weight range ≥43 kg/95 lbs to ≤120 kg/265 lbs.
* Reside outside a skilled nursing facility or dementia care facility, except for participants residing in an assisted living facility.
* Has a caregiver or study partner who will accompany them to the study visits. The caregiver or study partner must be a person who has frequent contact (at least 7 hours per week at 1 time or in different days) with the participant and is able to provide information about the participant's medication and overall condition. Prior to the conduct of any study procedures, the caregiver or study partner must be willing to sign the independent ethics committee (IEC)/institutional review board (IRB) approved informed consent.

Exclusion Criteria

Non-PSP- RS Movement Disorders or other central nervous system (CNS) Diseases

* Score of 3 on any functional domain in the PSP-CDS.
* Participants with known PSP genetic mutation (based on familiar or clinical history).
* Evidence of other neurological disorder that could explain signs of PSP (eg, Parkinson's disease, Alzheimer disease, etc.).
* Brain magnetic resonance imaging (MRI) within 1 year of screening consistent with:
* Primary degenerative diseases other than PSP.

Procedures

* For the optional substudy only: Contraindication or refusal to undergo 2 lumbar punctures for obtaining CSF.
* Contraindication or inability to tolerate MRI for screening MRI and volumetric brain MRI assessments throughout the substudy.
Minimum Eligible Age

50 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Ferrer Internacional S.A.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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The Neurology Center of Southern California - Carlsbad

Carlsbad, California, United States

Site Status

UCSF Weill Institute for Neurosciences

San Francisco, California, United States

Site Status

Rocky Mountain Movement Disorders Center

Denver, Colorado, United States

Site Status

University of Miami Miller School of Medicine

Miami, Florida, United States

Site Status

Augusta University

Augusta, Georgia, United States

Site Status

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status

Quest Research Institute

Farmington Hills, Michigan, United States

Site Status

Robert & John M. Bendheim Parkinson and Movement Disorders Center at Mount Sinai

New York, New York, United States

Site Status

Columbia University Irving Medical Center

New York, New York, United States

Site Status

Duke Neurology

Durham, North Carolina, United States

Site Status

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status

Central Texas Neurology Consultants

Round Rock, Texas, United States

Site Status

Groupe Hospitalier Pellegrin

Bordeaux, , France

Site Status

Hôpital de la Timone

Marseille, , France

Site Status

L'Hôpital Universitaire Carémeau

Nîmes, , France

Site Status

Hôpital Universitaire Pitié Salpêtrière

Paris, , France

Site Status

Hôpital Pierre-Paul Riquet

Toulouse, , France

Site Status

Neurologisches Fachkrankenhaus für Bewegungsstörungen/Parkinson

Beelitz, , Germany

Site Status

Universitätsklinikum Düsseldorf

Düsseldorf, , Germany

Site Status

Universitätsklinikum Leipzig

Leipzig, , Germany

Site Status

Ludwig-Maximilians-Universität München (LMU)

Munich, , Germany

Site Status

Pécsi Tudományegyetem Általános Orvostudományi Kar

Pécs, , Hungary

Site Status

IRCCS Istituto Delle Scienze Neurologiche di Bologna

Bologna, , Italy

Site Status

Azienda Ospedale Università di Padova

Padua, , Italy

Site Status

Azienda Ospedaliero-Universitaria Pisana

Pisa, , Italy

Site Status

Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) - San Raffaele Pisana

Roma, , Italy

Site Status

Azienda Ospedaliera Universitaria San Giovanni di Dio Ruggi d'Aragona

Salerno, , Italy

Site Status

Neurologia Śląska Centrum Medyczne

Katowice, , Poland

Site Status

Mazowiecki Szpital Bródnowski w Warszawie

Warsaw, , Poland

Site Status

Hospital de Braga

Braga, , Portugal

Site Status

Campus Neurológico Senior - Torres Vedras

Torres Vedras, , Portugal

Site Status

Complejo Hospitalario Universitario A Coruña

A Coruña, , Spain

Site Status

Hospital Germans Trias i Pujol

Badalona, , Spain

Site Status

Hospital Universitario Cruces

Barakaldo, , Spain

Site Status

Hospital Clínic de Barcelona

Barcelona, , Spain

Site Status

Hospital Universitario Ramón y Cajal

Madrid, , Spain

Site Status

Hospital Universitario 12 de Octubre

Madrid, , Spain

Site Status

Hospital Universitario de Navarra

Pamplona, , Spain

Site Status

Hospital Universitario Virgen del Rocío

Seville, , Spain

Site Status

Hospital Universitari i Politècnic La Fe

Valencia, , Spain

Site Status

University of Cambridge

Cambridge, , United Kingdom

Site Status

University College London Hospitals

London, , United Kingdom

Site Status

Newcastle Upon Tyne Hospitals

Newcastle, , United Kingdom

Site Status

University Hospital Southampton

Southampton, , United Kingdom

Site Status

Countries

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United States France Germany Hungary Italy Poland Portugal Spain United Kingdom

Other Identifiers

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FNP223-CT-2301

Identifier Type: -

Identifier Source: org_study_id

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