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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03051607
Recruitment Status : Terminated (New Safety Information)
First Posted : February 13, 2017
Results First Posted : May 3, 2019
Last Update Posted : May 3, 2019
Sponsor:
Collaborator:
Acorda Therapeutics
Information provided by (Responsible Party):
Biotie Therapies Inc.

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

Condition or disease Intervention/treatment Phase
Idiopathic Parkinson Disease Drug: Tozadenant Phase 3

Detailed Description:

Each patient will participate for up to 52 weeks, which includes a Screening Period, followed by a Baseline Visit and open-label treatment for 1 year with a safety Follow-up 4 weeks after the last treatment.

  • Screening Period: up to 6 weeks.
  • Open-Label Treatment Period: 52 weeks (1 year)
  • Post-Treatment Safety Follow Up: 4 weeks.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 66 participants
Intervention Model: Single Group Assignment
Intervention Model Description: Eligible patients will begin dosing with tozadenant at a dose of 120 mg twice daily. At Week 2 or thereafter, the investigator may adjust the patient's IMP dose as clinically indicated; doses of 60 mg BID and 120 mg BID will be permitted.
Masking: None (Open Label)
Primary Purpose: Treatment
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"
Actual Study Start Date : April 10, 2017
Actual Primary Completion Date : January 16, 2018
Actual Study Completion Date : January 16, 2018

Resource links provided by the National Library of Medicine

Drug Information available for: Levodopa

Arm Intervention/treatment
Experimental: Tozadenant
120 mg twice daily. At Week 2 or thereafter doses of 60 mg BID and 120 mg BID will be permitted.
Drug: Tozadenant
1 Year Open Label, 120 mg BID tozadenant, with dose modification to 60 mg BID tozadenant permitted.
Other Name: SYN115




Primary Outcome Measures :
  1. To Evaluate the Safety and Tolerability of Tozadenant in Levodopa-treated PD Patients Experiencing Motor Fluctuations. [ Time Frame: Up to 28 Weeks including safety follow-up visit. ]
    The primary objective of this study was to evaluate the safety and tolerability of tozadenant in levodopa-treated Parkinson's Disease (PD) patients experiencing motor fluctuations, based on assessment of treatment-emergent adverse events (TEAEs), vital signs, electrocardiograms (ECGs), and clinical laboratory tests. A total of 66 patients were enrolled in 27 study centers across 6 countries: USA, United Kingdom, Italy, Canada, Spain and Hungary, and were included in the Safety Set (SS).


Secondary Outcome Measures :
  1. To Evaluate the Effects of Tozadenant on the Occurrences of Daytime Drowsiness by Using the Epworth Sleepiness Scale. [ Time Frame: Up to 28 Weeks including safety follow-up visit. ]
    The Epworth Sleepiness Scale (ESS) is a scale intended to measure daytime sleepiness that is measured by use of a short questionnaire. Minimum range is 0 - Maximum range is 24. A score within the range 0−9 is considered to be normal while a score within the range of 10−24 would indicate that medical help should be solicited.

  2. To Evaluate the Effects of Tozadenant on the Number of Participants With Suicidal Ideation or Behavior Using the Columbia-Suicide Severity Scale (C-SSRS) Summarized by Visit. [ Time Frame: Up to 28 Weeks including safety follow-up visit. ]

    The Columbia Suicide Severity Rating Scale (C-SSRS) is a standardized suicidality rating system. The interview measures presence of suicidality and consists of 4 categories: suicidal ideation, intensity of ideation, suicidal behavior, and actual/potential lethality.

    Suicidal Ideation - A series of 1 -5 questions with 5 types of ideation of increasing severity. Score of Yes = 1, No= 0. A positive answer to question 4 (active suicidal ideation with some intent to act) or 5 (active suicidal ideation with specific plan and intent) indicates that the individual has some intent to act on suicidal thoughts and will need further evaluation.

    Suicidal Behavior - Different types of suicidal behavior are scored (Yes=1, No=0) and identify the occurrence of actual, interrupted, or aborted attempts; preparatory behaviors; and suicide. The total number of each type of suicidal behavior show the density of suicide, (more behaviors represent a higher degree of risk).


  3. To Evaluate the Effects of Tozadenant on the Number of Participants With Occurrence of Impulsive Behavior - Modified Minnesota Impulse Disorder Interview (mMIDI) [ Time Frame: Up to 28 Weeks including safety follow-up visit. ]

    The Minnesota Impulsive Disorders Interview (MIDI) 8 is a global instrument that includes questions for compulsive gambling, buying, and sexual behavior (as well as other disorders not reported to occur in PD).

    The mMIDI consists of 5 modules: compulsive buying, compulsive gambling, compulsive eating, hypersexuality and punding.

    Positive Answer: Any answer other than "no" on any question is considered a "yes"/positive answer.

    Negative Module: A module is considered negative if the patient's answer to a gateway (initial) question is "no" or if a patient answers "yes" to a gateway question and "no" to all of the remaining answers after the gateway question in that module.

    Positive Module: A module is considered positive if a patient gives a positive answer (No = 0, rarely = 1, occasionally = 2, frequently = 3) to any question after the gateway (initial) question in one or more of the 5 modules.




Information from the National Library of Medicine

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Ages Eligible for Study:   30 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Patient understands study requirements and has given his/her written informed consent on an Institutional Review Board (IRB) or Independent Ethics Committee (IEC) approved consent form.
  • Parkinson's disease diagnosis consistent with UK Parkinson's Disease Society Brain Bank Diagnostic criteria
  • Minimum of 3 years since diagnosis.
  • Meet Hoehn and Yahr PD stage
  • Good response to levodopa
  • Stable regimen of anti-PD medications
  • Patients must have been taking a levodopa-containing anti-PD medication continuously for at least the previous 12 months
  • Patient has documented a minimum amount of Off time.
  • If of childbearing potential (male and female) must use an acceptable method of contraception

Exclusion Criteria:

  • Previous tozadenant study participation
  • Current or recent participation in another study.
  • Secondary or atypical parkinsonism
  • Neurosurgical intervention for PD (except DBS if electrode placement has been performed over 12 months prior to screening)
  • Patient is taking apomorphine, budipine, istradefylline, tolcapone, or DUOPA™/Duodopa®
  • Treatment with excluded medications
  • Untreated or uncontrolled hyperthyroidism or hypothyroidism
  • Clinically significant out-of-range laboratory
  • MMSE out of range
  • Current episode of major depression (stable treatment for depression is permitted).
  • Recent suicide attempt or suicidal ideation type 4 or type 5 of the Columbia-Suicide Severity Rating Scale (C-SSRS)
  • Women lactating or pregnant
  • Hypersensitivity to any components of tozadenant or excipients
  • Abnormal findings on the physical or neurological examination, or medical history that would make the patient unsuitable for the study
  • History of hepatitis or cholangitis

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03051607


  Show 35 Study Locations
Sponsors and Collaborators
Biotie Therapies Inc.
Acorda Therapeutics
Investigators
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Study Director: Christopher Kenney, MD Acorda Therapeutics
  Study Documents (Full-Text)

Documents provided by Biotie Therapies Inc.:
Study Protocol  [PDF] October 9, 2017
Statistical Analysis Plan  [PDF] February 13, 2018


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Responsible Party: Biotie Therapies Inc.
ClinicalTrials.gov Identifier: NCT03051607     History of Changes
Other Study ID Numbers: TOZ-CL06
First Posted: February 13, 2017    Key Record Dates
Results First Posted: May 3, 2019
Last Update Posted: May 3, 2019
Last Verified: April 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Biotie Therapies Inc.:
Motor Fluctuations
Off time
On time
Dyskinesia
Additional relevant MeSH terms:
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Parkinson Disease
Parkinsonian Disorders
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Movement Disorders
Neurodegenerative Diseases
Levodopa
Antiparkinson Agents
Anti-Dyskinesia Agents
Dopamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs