{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dexpramipexole+Placebo",
    "query": {
      "intervention": "Dexpramipexole Placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 40,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dexpramipexole+Placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T17:05:36.588Z",
  "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": "NCT04046939",
      "title": "Dexpramipexole Dose-Ranging Biomarker Study in Subjects With Eosinophilic Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Eosinophilic Asthma",
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Dexpramipexole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Knopp Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "74 Years",
        "sex": "ALL",
        "summary": "18 Years to 74 Years"
      },
      "enrollment_count": 534,
      "start_date": "2019-08-15",
      "completion_date": "2021-03-02",
      "has_results": true,
      "last_update_posted_date": "2023-04-13",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 36,
      "location_summary": "Los Angeles, California • Mission Viejo, California • Westminster, California + 30 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Westminster",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Daytona Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04046939"
    },
    {
      "nct_id": "NCT00402233",
      "title": "A Randomized, Double-blind, Active (Pramipexole 0.5 mg Tid) and Placebo Controlled, Study of Pramipexole Given 0.5 mg and 0.75 mg Bid Over 12-week Treatment in Early Parkinson's Disease (PD) Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "Pramipexole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "31 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "31 Years and older"
      },
      "enrollment_count": 312,
      "start_date": "2006-11",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2014-05-16",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 39,
      "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Fountain Valley, California + 32 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00402233"
    },
    {
      "nct_id": "NCT00321854",
      "title": "Study of (Mirapex) Pramipexole for the Early Treatment of Parkinsons Disease (PD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "pramipexole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "30 Years to 79 Years"
      },
      "enrollment_count": 535,
      "start_date": "2006-05",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2014-05-16",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 32,
      "location_summary": "Brimingham, Alabama • Scottsdale, Arizona • La Jolla, California + 28 more",
      "locations": [
        {
          "city": "Brimingham",
          "state": "Alabama"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00321854"
    },
    {
      "nct_id": "NCT00647296",
      "title": "Safety and Tolerability Study of KNS-760704 in Amyotrophic Lateral Sclerosis (ALS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Amyotrophic Lateral Sclerosis"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Dexpramipexole 50 mg/day",
          "type": "DRUG"
        },
        {
          "name": "Dexpramipexole 150 mg/day",
          "type": "DRUG"
        },
        {
          "name": "Dexpramipexole 300 mg/day",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Knopp Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 194,
      "start_date": "2008-04-09",
      "completion_date": "2009-09-04",
      "has_results": true,
      "last_update_posted_date": "2021-07-08",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 21,
      "location_summary": "Little Rock, Arkansas • Los Angeles, California • San Francisco, California + 18 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00647296"
    },
    {
      "nct_id": "NCT05763121",
      "title": "A Study to Assess the Effect of Dexpramipexole in Adolescents and Adults With Severe Eosinophilic Asthma.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Eosinophilic Asthma",
        "Asthma; Eosinophilic",
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Dexpramipexole Dihydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Areteia Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "12 Years to 99 Years"
      },
      "enrollment_count": 1061,
      "start_date": "2023-01-30",
      "completion_date": "2025-12-08",
      "has_results": false,
      "last_update_posted_date": "2025-12-15",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 89,
      "location_summary": "Bakersfield, California • La Palma, California • Newport Beach, California + 73 more",
      "locations": [
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "La Palma",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Redding",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05763121"
    },
    {
      "nct_id": "NCT01388478",
      "title": "Safety Study of R(+)Pramipexole to Treat Early Alzheimer's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alzheimer's Disease"
      ],
      "interventions": [
        {
          "name": "R-pramipexole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2011-07",
      "completion_date": "2014-04",
      "has_results": true,
      "last_update_posted_date": "2021-10-12",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01388478"
    },
    {
      "nct_id": "NCT04759703",
      "title": "Treatment of Restless Legs Symptoms With Pramipexole to Improve the Outcomes of Protracted Opioid Withdrawal in OUD",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Sleep Disorder",
        "Restless Legs Syndrome",
        "Opioid-use Disorder",
        "Opioid Withdrawal"
      ],
      "interventions": [
        {
          "name": "Pramipexole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 75,
      "start_date": "2022-01-24",
      "completion_date": "2024-05-24",
      "has_results": true,
      "last_update_posted_date": "2025-09-22",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Quincy, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Quincy",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04759703"
    },
    {
      "nct_id": "NCT02138357",
      "title": "Butrans for Treatment of Restless Legs Syndrome",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Restless Legs Syndrome"
      ],
      "interventions": [
        {
          "name": "buprenorphine transdermal delivery system (BTDS)",
          "type": "DRUG"
        },
        {
          "name": "Placebo for BTDS patch",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "25 Years to 75 Years"
      },
      "enrollment_count": 0,
      "start_date": "2014-04",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2023-10-25",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02138357"
    },
    {
      "nct_id": "NCT00991276",
      "title": "Polysomnography Study Of Pregabalin And Pramipexole Versus Placebo In Patients With Restless Legs Syndrome And Associated Sleep Disturbance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Restless Legs Syndrome"
      ],
      "interventions": [
        {
          "name": "pregabalin",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "pramipexole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer's Upjohn has merged with Mylan to form Viatris Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 85,
      "start_date": "2009-12",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2021-02-15",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 41,
      "location_summary": "Jasper, Alabama • Phoenix, Arizona • Tucson, Arizona + 35 more",
      "locations": [
        {
          "city": "Jasper",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00991276"
    },
    {
      "nct_id": "NCT03842709",
      "title": "Non-Opioid Pramipexole and Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Chronic Pain"
      ],
      "interventions": [
        {
          "name": "Pramipexole Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of New Mexico",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2019-05-01",
      "completion_date": "2021-02-15",
      "has_results": true,
      "last_update_posted_date": "2024-10-23",
      "last_synced_at": "2026-09-22T17:05:36.588Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03842709"
    }
  ]
}