{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hypereosinophilic+Syndromes",
    "query": {
      "condition": "Hypereosinophilic Syndromes"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 49,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hypereosinophilic+Syndromes&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-11T01:32:54.044Z",
  "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": "NCT05334368",
      "title": "Depemokimab in Participants With Hypereosinophilic Syndrome, Efficacy, and Safety Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypereosinophilic Syndrome"
      ],
      "interventions": [
        {
          "name": "Depemokimab",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 123,
      "start_date": "2022-09-06",
      "completion_date": "2028-12-19",
      "has_results": false,
      "last_update_posted_date": "2025-11-25",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 11,
      "location_summary": "San Diego, California • Atlanta, Georgia • Boston, Massachusetts + 8 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Southfield",
          "state": "Michigan"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05334368"
    },
    {
      "nct_id": "NCT01285323",
      "title": "A Study to Evaluate the Efficacy and Safety of Reslizumab in Patients With Eosinophilic Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Eosinophilic Asthma"
      ],
      "interventions": [
        {
          "name": "Reslizumab",
          "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": "12 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "12 Years to 75 Years"
      },
      "enrollment_count": 464,
      "start_date": "2011-03",
      "completion_date": "2014-04",
      "has_results": true,
      "last_update_posted_date": "2021-11-09",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 15,
      "location_summary": "Mobile, Alabama • Fresno, California • Long Beach, California + 12 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Waterbury",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01285323"
    },
    {
      "nct_id": "NCT03862157",
      "title": "Azacitidine, Venetoclax, and Pevonedistat in Treating Patients With Newly Diagnosed Acute Myeloid Leukemia",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Acute Myeloid Leukemia",
        "Atypical Chronic Myeloid Leukemia, BCR-ABL1 Negative",
        "Chronic Eosinophilic Leukemia, Not Otherwise Specified",
        "Chronic Myelomonocytic Leukemia",
        "Chronic Neutrophilic Leukemia",
        "Essential Thrombocythemia",
        "Myelodysplastic Syndrome",
        "Myelodysplastic/Myeloproliferative Neoplasm With Ring Sideroblasts and Thrombocytosis",
        "Myelodysplastic/Myeloproliferative Neoplasm, Unclassifiable",
        "Myeloid Neoplasm",
        "Myeloproliferative Neoplasm",
        "Myeloproliferative Neoplasm, Unclassifiable",
        "Overt Primary Myelofibrosis",
        "Polycythemia Vera",
        "Polycythemia Vera, Post-Polycythemic Myelofibrosis Phase",
        "Prefibrotic/Early Primary Myelofibrosis"
      ],
      "interventions": [
        {
          "name": "Azacitidine",
          "type": "DRUG"
        },
        {
          "name": "Pevonedistat",
          "type": "DRUG"
        },
        {
          "name": "Venetoclax",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2019-02-27",
      "completion_date": "2027-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-11",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03862157"
    },
    {
      "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": "2026-06-11T01:32:54.044Z",
      "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": "NCT01287039",
      "title": "A Study to Evaluate the Efficacy and Safety of Reslizumab (3.0 mg/kg) in the Reduction of Clinical Asthma Exacerbations in Patients (12-75 Years of Age) With Eosinophilic Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Eosinophilic Asthma"
      ],
      "interventions": [
        {
          "name": "Reslizumab",
          "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": "12 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "12 Years to 75 Years"
      },
      "enrollment_count": 489,
      "start_date": "2011-04",
      "completion_date": "2014-03",
      "has_results": true,
      "last_update_posted_date": "2021-11-09",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 26,
      "location_summary": "Scottsdale, Arizona • Los Angeles, California • Orange, California + 23 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01287039"
    },
    {
      "nct_id": "NCT03306043",
      "title": "A Multi-center, Open-label Extension, Safety Study of Mepolizumab in Subjects With Hypereosinophilic Syndrome (HES) From Study 200622",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypereosinophilic Syndrome"
      ],
      "interventions": [
        {
          "name": "Mepolizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 102,
      "start_date": "2017-11-13",
      "completion_date": "2019-12-30",
      "has_results": true,
      "last_update_posted_date": "2020-06-23",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 6,
      "location_summary": "La Jolla, California • New Haven, Connecticut • Rochester, Minnesota + 3 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Mayfield Heights",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03306043"
    },
    {
      "nct_id": "NCT03683576",
      "title": "GB001 in Adult Subjects With Moderate to Severe Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "GB001",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GB001, Inc, a wholly owned subsidiary of Gossamer Bio, Inc.",
      "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": 481,
      "start_date": "2018-10-22",
      "completion_date": "2020-08-18",
      "has_results": true,
      "last_update_posted_date": "2021-09-16",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 47,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 41 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Napa",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03683576"
    },
    {
      "nct_id": "NCT01290887",
      "title": "Open-Label Extension Study to Evaluate the Long-Term Safety and Efficacy of Reslizumab (3.0 mg/kg) as Treatment for Patients (12 Through 75 Years of Age) With Eosinophilic Asthma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Eosinophilic Asthma"
      ],
      "interventions": [
        {
          "name": "Reslizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "12 Years to 75 Years"
      },
      "enrollment_count": 1052,
      "start_date": "2011-06",
      "completion_date": "2015-01",
      "has_results": true,
      "last_update_posted_date": "2016-06-06",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 48,
      "location_summary": "Scottsdale, Arizona • Anaheim, California • Fountain Valley, California + 39 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01290887"
    },
    {
      "nct_id": "NCT02281318",
      "title": "Efficacy and Safety Study of Mepolizumab Adjunctive Therapy in Participants With Severe Eosinophilic Asthma on Markers of Asthma Control",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Mepolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "SOC",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 556,
      "start_date": "2014-12-11",
      "completion_date": "2016-06-10",
      "has_results": true,
      "last_update_posted_date": "2018-08-06",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 24,
      "location_summary": "Birmingham, Alabama • Fresno, California • Long Beach, California + 20 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02281318"
    },
    {
      "nct_id": "NCT06388889",
      "title": "Phase III Long-Term Extension Study With Dexpramipexole",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Eosinophilic Asthma"
      ],
      "interventions": [
        {
          "name": "Dexpramipexole Dihydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Areteia Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 509,
      "start_date": "2024-06-12",
      "completion_date": "2025-12-08",
      "has_results": false,
      "last_update_posted_date": "2025-12-15",
      "last_synced_at": "2026-06-11T01:32:54.044Z",
      "location_count": 23,
      "location_summary": "Bakersfield, California • Northridge, California • Coral Gables, Florida + 13 more",
      "locations": [
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Northridge",
          "state": "California"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Greenacres City",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06388889"
    }
  ]
}