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Terminated Phase 3 Interventional Results available

Safety and Tolerability of Tozadenant as Adjunctive Therapy in Levodopa-Treated Patients With Parkinson's Disease.

ClinicalTrials.gov ID: NCT03051607

Public ClinicalTrials.gov record NCT03051607. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 17, 2026, 6:09 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Multicenter, Open-Label Study to Evaluate the Safety and Tolerability of Tozadenant as Adjunctive Therapy in Levodopa-Treated Patients With Parkinson's Disease Experiencing End of Dose "Wearing-Off"

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Phase 3, international, multicenter, open-label 12 month safety study.

Study identification

NCT ID
NCT03051607
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 3
Lead sponsor
Biotie Therapies Inc.
Industry
Enrollment
66 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
30 Years to 80 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Apr 10, 2017 (Actual)
Primary completion
Jan 16, 2018 (Actual)
Completion
Jan 16, 2018 (Actual)
Last update posted
May 3, 2019

2017 – 2018

United States locations

U.S. sites
31
U.S. states
18
U.S. cities
28
Facility City State ZIP Site status
Barrow Neurology Clinics, St. Joseph's Hospital and Medical Center, Dignity Health Phoenix Arizona 85013 —
University of Arkansas for Medical Sciences Little Rock Arkansas 77215 —
Collaborative Neuroscience Network, LLC Long Beach California 90802 —
USC, Keck School of Medicine Los Angeles California 90089 —
SC3 Research Group Pasadena California 91105 —
JEM Research Institute Atlantis Florida 33462 —
Aventura Neurologic Associates Aventura Florida 33180 —
Parkinson's Disease and Movement Disorders Center of Boca Raton Boca Raton Florida 33486 —
Neurology Associates, P.A. Maitland Florida 32751 —
Neurology Associates of Ormond Beach Ormond Beach Florida 32174 —
Parkinson's Disease Treatment Center of SW Florida Port Charlotte Florida 33980 —
Infinity Clinical Research Sunrise Florida 33513 —
Hawaii Pacific Neuroscience Honolulu Hawaii 96817 —
Unity Point Health Des Moines Iowa 10034 —
Unity Point Health Des Moines Iowa 50312 —
University of Kansas Medical Center Kansas City Kansas 66160 —
University of Kentucky, Department of Neurology Lexington Kentucky 40536 —
Henry Ford West Bloomfield Hospital Bloomfield Hills Michigan 48322 —
Struthers Parkinson's Center Golden Valley Minnesota 55416 —
Struthers Parkinson's Center Golden Valley Minnesota 55427 —
The Robert and John M. Bendheim Parkinson and Movement Disorders Center New York New York 10029 —
Asheville Neurology Specialists, PA Asheville North Carolina 28806 —
Raleigh Neurology Associates Raleigh North Carolina 27607 —
Movement Disorders Clinic of Oklahoma Tulsa Oklahoma 74136 —
Abington Neurological Associates Willow Grove Pennsylvania 27607 —
Baylor College of Medicine Houston Texas 77030 —
University of Virginia, Department of Neurology Charlottesville Virginia 98034 —
Booth Gardner Parkinson's Care Center Kirkland Washington 98034 —
Premier Clinical Research Spokane Washington 99202 —
University of Wisconsin-Madison Madison Wisconsin 53705 —
University of Wisconsin - Madison Madison Wisconsin 53706 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 4 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03051607, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted May 3, 2019 · Synced Oct 17, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03051607 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →