{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Voxelotor+Oral+Tablet",
    "query": {
      "intervention": "Voxelotor Oral Tablet"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 8,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T17:20:07.518Z",
  "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": "NCT02850406",
      "title": "Study to Evaluate the Effect of GBT440 in Pediatrics With Sickle Cell Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Voxelotor",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Months to 17 Years"
      },
      "enrollment_count": 147,
      "start_date": "2016-07-05",
      "completion_date": "2023-10-02",
      "has_results": true,
      "last_update_posted_date": "2025-08-15",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 13,
      "location_summary": "Brentwood, California • Washington D.C., District of Columbia • Atlanta, Georgia + 9 more",
      "locations": [
        {
          "city": "Brentwood",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02850406"
    },
    {
      "nct_id": "NCT04188509",
      "title": "Open-Label Extension of Voxelotor",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Voxelotor",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Months and older"
      },
      "enrollment_count": 162,
      "start_date": "2019-11-18",
      "completion_date": "2024-11-01",
      "has_results": true,
      "last_update_posted_date": "2025-11-13",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 6,
      "location_summary": "Washington D.C., District of Columbia • Atlanta, Georgia • Chicago, Illinois + 3 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        },
        {
          "city": "Greenville",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04188509"
    },
    {
      "nct_id": "NCT03573882",
      "title": "Study to Assess the Effect of Long-term Treatment With Voxelotor in Participants Who Have Completed Treatment in Study GBT440-031",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Voxelotor",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "12 Years to 65 Years"
      },
      "enrollment_count": 179,
      "start_date": "2018-06-06",
      "completion_date": "2024-11-12",
      "has_results": true,
      "last_update_posted_date": "2025-11-18",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 34,
      "location_summary": "Little Rock, Arkansas • Oakland, California • Miami, Florida + 20 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03573882"
    },
    {
      "nct_id": "NCT05228834",
      "title": "Voxelotor Neurocognitive Function Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Voxelotor Only Product in Oral Dose Form",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "8 Years to 18 Years"
      },
      "enrollment_count": 1,
      "start_date": "2022-06-24",
      "completion_date": "2022-09-30",
      "has_results": true,
      "last_update_posted_date": "2024-05-02",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05228834"
    },
    {
      "nct_id": "NCT04218084",
      "title": "Study to Evaluate the Effect of GBT440 on TCD in Pediatrics With Sickle Cell Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Voxelotor",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "14 Years",
        "sex": "ALL",
        "summary": "2 Years to 14 Years"
      },
      "enrollment_count": 236,
      "start_date": "2020-11-11",
      "completion_date": "2024-11-06",
      "has_results": true,
      "last_update_posted_date": "2026-03-10",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 13,
      "location_summary": "Washington D.C., District of Columbia • Miami, Florida • Atlanta, Georgia + 5 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04218084"
    },
    {
      "nct_id": "NCT04400487",
      "title": "Actigraphy Improvement With Voxelotor (ActIVe) Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sickle Cell Disease",
        "Sickle Cell Anemia"
      ],
      "interventions": [
        {
          "name": "Voxelotor",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "12 Years to 55 Years"
      },
      "enrollment_count": 25,
      "start_date": "2020-12-21",
      "completion_date": "2022-09-13",
      "has_results": true,
      "last_update_posted_date": "2023-11-21",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 10,
      "location_summary": "Farmington, Connecticut • Atlanta, Georgia • Detroit, Michigan + 7 more",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04400487"
    },
    {
      "nct_id": "NCT04724421",
      "title": "Expanded Access Protocol for Adults and Pediatric Patients With Sickle Cell Disease Who Have No Alternative Treatment Options",
      "overall_status": "NO_LONGER_AVAILABLE",
      "study_type": "EXPANDED_ACCESS",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Voxelotor",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Months to 11 Years"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2024-11-20",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 33,
      "location_summary": "Phoenix, Arizona • San Diego, California • Wilmington, Delaware + 20 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04724421"
    },
    {
      "nct_id": "NCT05228821",
      "title": "Voxelotor Brain Oxygenation and Neurocognitive Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Voxelotor Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "12 Years to 30 Years"
      },
      "enrollment_count": 0,
      "start_date": "2023-08-09",
      "completion_date": "2023-08-23",
      "has_results": false,
      "last_update_posted_date": "2024-08-09",
      "last_synced_at": "2026-09-22T17:20:07.518Z",
      "location_count": 2,
      "location_summary": "St Louis, Missouri • The Bronx, New York",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05228821"
    }
  ]
}