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Study details
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A Study to Evaluate the Efficacy and Safety of Intravenous (IV) Prasinezumab in Participants With Early-Stage Parkinson's Disease

Hoffmann-La Roche
NCT IDNCT07174310ClinicalTrials.gov data as of Apr 2026
Phase

Phase 3

Target enrollment

900

Study length

about 5.6 years

Ages

50–85

Locations

29 sites in CA, CO, CT +14

What this study is about

This trial is testing a treatment called prasinezumab compared to a placebo in people with early-stage Parkinson's disease. The goal is to see if prasinezumab helps manage symptoms, is safe, and how it works in the body.

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Take Placebo
  • 2.Take Prasinezumab

Participation Burden

What's physically and logistically required of participants.

Logistics & Travel
In-person visits

Requires travel to a study site

Physical Intervention
Standard

How treatment is administered

Treatment Assignment
Randomized & Blinded

You may get a placebo/standard care, and you won't know which.

Extracted study details

Pulled from the trial record to show what is being tested and what the study is measuring.

Drug classes

monoclonal antibody

Endpoints

Primary: Time to Confirmed Motor Progression Event on Movement Disorder Society - Unified Parkinson's Disease Rating Scale (MDS-UPDRS) Part III Score

Secondary: Change From Baseline in Motor Function as Measured by the MDS-UPDRS Part III off Medication Score, Percentage of Participants With Adverse Events of Special Interest (AESI), Percentage of Participants With Treatment Emergent Adverse Events (TEAEs)

Body systems

Neurology