{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tetrabenazine",
    "query": {
      "intervention": "Tetrabenazine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T12:13:49.869Z",
  "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": "NCT02191358",
      "title": "YouScript IMPACT Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adverse Drug Events",
        "Adverse Drug Reactions",
        "Drug Interaction Potentiation",
        "Drug Metabolism, Poor, CYP2D6-RELATED",
        "Drug Metabolism, Poor, CYP2C19-RELATED",
        "Cytochrome P450 Enzyme Deficiency",
        "Cytochrome P450 CYP2D6 Enzyme Deficiency",
        "Cytochrome P450 CYP2C9 Enzyme Deficiency",
        "Cytochrome P450 CYP2C19 Enzyme Deficiency",
        "Cytochrome P450 CYP3A Enzyme Deficiency",
        "Poor Metabolizer Due to Cytochrome P450 CYP2C9 Variant",
        "Poor Metabolizer Due to Cytochrome P450 CYP2C19 Variant",
        "Poor Metabolizer Due to Cytochrome P450 CYP2D6 Variant"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Genelex Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 800,
      "start_date": "2014-10",
      "completion_date": "2015-08",
      "has_results": false,
      "last_update_posted_date": "2017-03-01",
      "last_synced_at": "2026-09-04T12:13:49.869Z",
      "location_count": 7,
      "location_summary": "Garden Grove, California • Denver, Colorado • Lexington, Kentucky + 3 more",
      "locations": [
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Towson",
          "state": "Maryland"
        },
        {
          "city": "Fall River",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02191358"
    },
    {
      "nct_id": "NCT01451463",
      "title": "Impact of Xenazine(Tetrabenazine)on Gait and Functional Activity in Individuals With Huntington's Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Huntington's Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2010-04",
      "completion_date": "2013-04",
      "has_results": true,
      "last_update_posted_date": "2017-11-24",
      "last_synced_at": "2026-09-04T12:13:49.869Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01451463"
    },
    {
      "nct_id": "NCT02509793",
      "title": "A Pilot Study Assessing Impulsivity in Patients With Huntington's Disease on Xenazine (Tetrabenazine)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Huntington's Disease"
      ],
      "interventions": [
        {
          "name": "Tetrabenazine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "William Ondo, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 20,
      "start_date": "2018-08-01",
      "completion_date": "2023-07-01",
      "has_results": false,
      "last_update_posted_date": "2022-09-02",
      "last_synced_at": "2026-09-04T12:13:49.869Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02509793"
    },
    {
      "nct_id": "NCT01897896",
      "title": "Alternatives for Reducing Chorea in Huntington Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chorea Associated With Huntington Disease"
      ],
      "interventions": [
        {
          "name": "SD-809",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Auspex Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 119,
      "start_date": "2013-11-12",
      "completion_date": "2017-08-21",
      "has_results": true,
      "last_update_posted_date": "2021-11-09",
      "last_synced_at": "2026-09-04T12:13:49.869Z",
      "location_count": 34,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Fayetteville, Arkansas + 30 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Englewood",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01897896"
    },
    {
      "nct_id": "NCT04102579",
      "title": "Efficacy, Safety, and Tolerability of Valbenazine for the Treatment of Chorea Associated With Huntington Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chorea, Huntington"
      ],
      "interventions": [
        {
          "name": "Valbenazine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Neurocrine Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 128,
      "start_date": "2019-11-13",
      "completion_date": "2021-10-26",
      "has_results": true,
      "last_update_posted_date": "2023-10-11",
      "last_synced_at": "2026-09-04T12:13:49.869Z",
      "location_count": 42,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • La Jolla, California + 37 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04102579"
    },
    {
      "nct_id": "NCT01834911",
      "title": "Effect of Tetrabenazine on Stroop Interference in HD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Huntington Disease"
      ],
      "interventions": [
        {
          "name": "Tetrabenazine withdrawal",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "New York Medical College",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2013-03",
      "completion_date": "2018-01-01",
      "has_results": true,
      "last_update_posted_date": "2025-05-28",
      "last_synced_at": "2026-09-04T12:13:49.869Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01834911"
    },
    {
      "nct_id": "NCT01795859",
      "title": "First Time Use of SD-809 in Huntington Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chorea"
      ],
      "interventions": [
        {
          "name": "SD-809",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 90,
      "start_date": "2013-08-05",
      "completion_date": "2014-12-05",
      "has_results": true,
      "last_update_posted_date": "2017-09-20",
      "last_synced_at": "2026-09-04T12:13:49.869Z",
      "location_count": 37,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Fayetteville, Arkansas + 33 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Englewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01795859"
    }
  ]
}