A Study to Test the Safety and Tolerability of UCB0107 in Study Participants With Progressive Supranuclear Palsy (PSP)

Study Overview
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Brief Summary
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The purpose of the study is to assess the safety and tolerability of UCB0107 in study participants with Progressive Supranuclear Palsy (PSP).

Official Title
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A Participant-Blind, Investigator-Blind, Placebo-Controlled, Phase 1b Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of UCB0107 in Study Participants With Progressive Supranuclear Palsy (PSP)

Conditions
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Progressive Supranuclear Palsy

Intervention / Treatment
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* Drug: bepranemab
* Drug: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participant must be ≥40 years of age at the time of signing the informed consent Participants meet the criteria for possible or probable Progressive Supranuclear Palsy (PSP) Richardson's Syndrome according the Movement Disorder Society (MDS)-PSP criteria Participant is able to walk at least 5 steps with minimal or no assistance (stabilization of one arm or use of cane/walker) Participant has reliable caregiver support during the whole study period or the participant is able to independently follow the study protocol Participant is stable on all treatments for at least 2 weeks prior to the Baseline Visit Participant has a body mass index (BMI) within the range 16.0 to 32.0 kg/m^2 (inclusive) Participants can be male or female Participant (and caregiver or legal representative, if applicable) is capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the Informed Consent form (ICF) and in this protocol. Informed consent must be obtained before initiating any study procedures Exclusion Criteria: Ongoing, recurrent, severe headaches, including migraines Evidence of any clinically significant neurological disorder (including any clinically significant abnormalities on the screening magnetic resonance imaging) other than Progressive Supranuclear Palsy (PSP) Participant has a lifetime history of suicide attempt, or has suicidal ideation with at least some intent to act in the past 12 months as indicated by a positive response (Yes) to either Question 4 or Question 5 of the Screening/Baseline version of the Columbia-suicide severity rating scale (C-SSRS) at Screening Sensitivity to any of the study interventions, or components thereof, or drug or other allergy that, in the opinion of the Investigator or medical monitor, contraindicates participation in the study The following liver enzyme test results: Alanine aminotransferase (ALT), aspartate aminotransferase (AST), or alkaline phosphatase (ALP) are >2.0x upper limit of normal (ULN) Bilirubin >1.5x ULN (isolated bilirubin >1.5x ULN is acceptable if bilirubin is fractionated and direct bilirubin is <35 %) The mean QT interval value (corrected by Fredericia's formula for the heart rate, QTcF) of the 3 Screening ECGs is >450 msec for male participants or >470 msec for female participants or QTcF is >480 msec in participants with bundle branch block Abnormalities in lumbar spine previously known or determined by a Screening lumbar x-ray (if conducted) that may jeopardize the execution of the lumbar puncture Participant was previously treated with tau-protein targeting drugs and/or tau-protein targeting antibodies or vaccines. Treatment with biologic agents (such as monoclonal antibodies including marketed drugs) within 3 months or 5 half-lives (whichever is longer) prior to the first dose

Ages Eligible for Study
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Minimum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: bepranemab<br>Subjects will be randomized to receive bepranemab. | Drug: bepranemab<br>* bepranemab will be administered in a predefined dosage. Pharmaceutical Form: Solution for infusion Route of Administration: Intravenous<br>* Other names: UCB0107;|
| Placebo Comparator: Placebo<br>Subjects will be randomized to receive Placebo. | Drug: Placebo<br>* Pharmaceutical Form: Solution for infusion Concentration: 0.9% w/v sodium chloride aqueous solution Route of Administration: Intravenous<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of treatment emergent adverse events (TEAEs) from Baseline to the last Visit | An Adverse Event (AE) is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. | From Baseline up to Week 68 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Progressive Supranuclear Palsy, UCB0107, Phase 1 study, PSP