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Recruiting Phase 3 NCT07174310

NCT07174310 A Study to Evaluate the Efficacy and Safety of Intravenous (IV) Prasinezumab in Participants With Early-Stage Parkinson's Disease

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Clinical Trial Summary
NCT ID NCT07174310
Status Recruiting
Phase Phase 3
Sponsor Hoffmann-La Roche
Condition Parkinson's Disease
Study Type INTERVENTIONAL
Enrollment 900 participants
Start Date 2025-11-24
Primary Completion 2029-06-30

Eligibility & Interventions

Sex All sexes
Min Age 50 Years
Max Age 85 Years
Study Type INTERVENTIONAL
Interventions
PrasinezumabPlacebo

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 3 trials are large pivotal studies comparing the treatment to current standard of care or placebo. Your participation directly contributes to the evidence needed for regulatory approval.

This trial targets 900 participants in total. It began in 2025-11-24 with a primary completion date of 2029-06-30.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The purpose of this study is to evaluate the efficacy, safety, and pharmacokinetics (PK) of prasinezumab compared with placebo in participants with early-stage Parkinson's disease (PD) on stable symptomatic monotherapy with levodopa.

Eligibility Criteria

Inclusion Criteria: * Body weight within 40-110 kilograms (kg) (88-242 pounds \[lbs\]) and a body mass index within the range 18-34 kg/m2 * Diagnosis of idiopathic PD based on Movement Disorder Society (MDS) criteria * Has received monotherapy treatment * An MDS-UPDRS Part IV score of 0 at screening and prior to randomization * Hoehn and Yahr (H\&Y) Stage 1 or 2 off medication at screening and prior to randomization * Agreement to adhere to the contraception requirements Exclusion Criteria: * Pregnant or breastfeeding, or intention of becoming pregnant during the study or within the time frame in which contraception is required * Medical history indicating a parkinsonian syndrome other than idiopathic PD * Diagnosis of a significant neurologic disease other than PD * Chronic uncontrolled hypertension

Contact & Investigator

Central Contact

Reference Study ID Number: BN44715 https://forpatients.roche.com/ No attachments to email below.

✉ global-roche-genentech-trials@gene.com

📞 888-662-6728 (U.S. and Canada)

Principal Investigator

Clinical Trials

STUDY DIRECTOR

Hoffmann-La Roche

Frequently Asked Questions

Who can join the NCT07174310 clinical trial?

This trial is open to participants of all sexes, aged 50 Years or older, up to 85 Years, studying Parkinson's Disease. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT07174310 trial and what does that mean for participants?

Phase 3 trials are large-scale studies comparing the new treatment to existing standards of care or a placebo. They provide the evidence needed for regulatory approval. This trial targets 900 participants.

Is NCT07174310 currently recruiting?

Yes, NCT07174310 is actively recruiting participants. Contact the research team at global-roche-genentech-trials@gene.com for enrollment information.

Where is the NCT07174310 trial being conducted?

This trial is being conducted at Birmingham, United States, Phoenix, United States, Fullerton, United States, La Jolla, United States and 11 additional locations.

Who is sponsoring the NCT07174310 clinical trial?

NCT07174310 is sponsored by Hoffmann-La Roche. The principal investigator is Clinical Trials at Hoffmann-La Roche. The trial plans to enroll 900 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: September 2026  ·  Data Methodology