{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Circassia+Limited",
    "query": {
      "sponsor": "Circassia Limited"
    },
    "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": "2026-10-02T04:13:04.104Z",
  "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": "NCT02150343",
      "title": "Phase II HDM-SPIRE Safety and Efficacy Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Rhinoconjunctivitis"
      ],
      "interventions": [
        {
          "name": "HDM-SPIRE",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Circassia Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 715,
      "start_date": "2014-09",
      "completion_date": "2017-04-13",
      "has_results": true,
      "last_update_posted_date": "2018-06-15",
      "last_synced_at": "2026-10-02T04:13:04.104Z",
      "location_count": 56,
      "location_summary": "Birmingham, Alabama • Huntington Beach, California • Long Beach, California + 53 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntington Beach",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Napa",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02150343"
    },
    {
      "nct_id": "NCT01620762",
      "title": "Phase III Cat-PAD Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Rhinoconjunctivitis"
      ],
      "interventions": [
        {
          "name": "Cat-PAD",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Circassia Limited",
      "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": 1408,
      "start_date": "2012-10",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2018-06-15",
      "last_synced_at": "2026-10-02T04:13:04.104Z",
      "location_count": 52,
      "location_summary": "Rolling Hills Estates, California • Colorado Springs, Colorado • Denver, Colorado + 49 more",
      "locations": [
        {
          "city": "Rolling Hills Estates",
          "state": "California"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Wheat Ridge",
          "state": "Colorado"
        },
        {
          "city": "Eagle",
          "state": "Idaho"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01620762"
    },
    {
      "nct_id": "NCT01398137",
      "title": "Ragweed Observational Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ragweed Allergy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Circassia Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 90,
      "start_date": "2011-07",
      "completion_date": "2011-10",
      "has_results": false,
      "last_update_posted_date": "2011-10-27",
      "last_synced_at": "2026-10-02T04:13:04.104Z",
      "location_count": 10,
      "location_summary": "Owensboro, Kentucky • Minneapolis, Minnesota • Plymouth, Minnesota + 7 more",
      "locations": [
        {
          "city": "Owensboro",
          "state": "Kentucky"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Plymouth",
          "state": "Minnesota"
        },
        {
          "city": "Rolla",
          "state": "Missouri"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01398137"
    },
    {
      "nct_id": "NCT02075138",
      "title": "Grass Observational Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Grass Allergy",
        "Rhinoconjunctivitis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Circassia Limited",
      "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": 109,
      "start_date": "2014-04",
      "completion_date": "2015-03",
      "has_results": false,
      "last_update_posted_date": "2015-04-08",
      "last_synced_at": "2026-10-02T04:13:04.104Z",
      "location_count": 5,
      "location_summary": "Washington D.C., District of Columbia • Normal, Illinois • Sylvania, Ohio + 2 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Normal",
          "state": "Illinois"
        },
        {
          "city": "Sylvania",
          "state": "Ohio"
        },
        {
          "city": "Medford",
          "state": "Oregon"
        },
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02075138"
    },
    {
      "nct_id": "NCT02601690",
      "title": "Observational Analysis of T Cell Responses to SPIREs for Multiple Allergens in Subjects With Allergy in North America",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Allergy"
      ],
      "interventions": [
        {
          "name": "Blood Sampling",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Adiga Life Sciences, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 199,
      "start_date": "2015-10",
      "completion_date": "2017-06-25",
      "has_results": false,
      "last_update_posted_date": "2019-04-09",
      "last_synced_at": "2026-10-02T04:13:04.104Z",
      "location_count": 2,
      "location_summary": "Upland, California • Fairfax, Virginia",
      "locations": [
        {
          "city": "Upland",
          "state": "California"
        },
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02601690"
    },
    {
      "nct_id": "NCT02795273",
      "title": "Efficacy and Safety of Grass-SPIRE Registration Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Rhinitis",
        "Conjunctivitis"
      ],
      "interventions": [
        {
          "name": "Grass-SPIRE",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Circassia Limited",
      "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": 0,
      "start_date": "2016-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2016-06-23",
      "last_synced_at": "2026-10-02T04:13:04.104Z",
      "location_count": 2,
      "location_summary": "Canton, Ohio • Cincinnati, Ohio",
      "locations": [
        {
          "city": "Canton",
          "state": "Ohio"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02795273"
    }
  ]
}