{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tozadenant",
    "query": {
      "intervention": "Tozadenant"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T11:20:15.582Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01283594",
      "title": "Safety and Efficacy Study of SYN115 in Parkinson's Patients Using Levodopa to Treat End of Dose Wearing Off",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Tozadenant (SYN115) 60 mg BID",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Levodopa (L-dopa)",
          "type": "DRUG"
        },
        {
          "name": "Tozadenant (SYN115) 120 mg BID",
          "type": "DRUG"
        },
        {
          "name": "Tozadenant (SYN115) 180 mg BID",
          "type": "DRUG"
        },
        {
          "name": "Tozadenant (SYN115) 240 mg BID",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biotie Therapies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "30 Years to 80 Years"
      },
      "enrollment_count": 420,
      "start_date": "2011-03",
      "completion_date": "2012-10",
      "has_results": false,
      "last_update_posted_date": "2019-01-17",
      "last_synced_at": "2026-09-02T11:20:15.582Z",
      "location_count": 40,
      "location_summary": "Birmingham, Alabama • La Jolla, California • Loma Linda, California + 37 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01283594"
    },
    {
      "nct_id": "NCT03212313",
      "title": "Study to Investigate the Influence of Hepatic Insufficiency on the Pharmacokinetics of Tozadenant",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hepatic Impairment"
      ],
      "interventions": [
        {
          "name": "Tozadenant",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biotie Therapies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2017-06-30",
      "completion_date": "2017-12-31",
      "has_results": false,
      "last_update_posted_date": "2018-01-04",
      "last_synced_at": "2026-09-02T11:20:15.582Z",
      "location_count": 2,
      "location_summary": "Miami, Florida • Orlando, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03212313"
    },
    {
      "nct_id": "NCT03051607",
      "title": "Safety and Tolerability of Tozadenant as Adjunctive Therapy in Levodopa-Treated Patients With Parkinson's Disease.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Idiopathic Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "Tozadenant",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biotie Therapies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "30 Years to 80 Years"
      },
      "enrollment_count": 66,
      "start_date": "2017-04-10",
      "completion_date": "2018-01-16",
      "has_results": true,
      "last_update_posted_date": "2019-05-03",
      "last_synced_at": "2026-09-02T11:20:15.582Z",
      "location_count": 31,
      "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Long Beach, California + 25 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03051607"
    },
    {
      "nct_id": "NCT00783276",
      "title": "An fMRI Study of SYN115 in Cocaine Dependent Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Cocaine Dependence"
      ],
      "interventions": [
        {
          "name": "SYN115",
          "type": "DRUG"
        },
        {
          "name": "PLACEBO",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 26,
      "start_date": "2008-10",
      "completion_date": "2013-01",
      "has_results": false,
      "last_update_posted_date": "2019-07-19",
      "last_synced_at": "2026-09-02T11:20:15.582Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00783276"
    },
    {
      "nct_id": "NCT00605553",
      "title": "Study to Evaluate SYN115 in Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Tozadenant",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biotie Therapies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "40 Years to 75 Years"
      },
      "enrollment_count": 30,
      "start_date": "2008-04",
      "completion_date": "2009-05",
      "has_results": false,
      "last_update_posted_date": "2017-08-08",
      "last_synced_at": "2026-09-02T11:20:15.582Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00605553"
    },
    {
      "nct_id": "NCT02453386",
      "title": "Safety and Efficacy Study of Tozadenant to Treat End of Dose Wearing Off in Parkinson's Patients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Idiopathic Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "tozadenant",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biotie Therapies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "30 Years to 80 Years"
      },
      "enrollment_count": 449,
      "start_date": "2015-07",
      "completion_date": "2018-01-12",
      "has_results": true,
      "last_update_posted_date": "2019-04-03",
      "last_synced_at": "2026-09-02T11:20:15.582Z",
      "location_count": 40,
      "location_summary": "Birmingham, Alabama • Sun City, Arizona • Loma Linda, California + 37 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Sun City",
          "state": "Arizona"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02453386"
    }
  ]
}