{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Grass+pollen+extract",
    "query": {
      "intervention": "Grass pollen extract"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T10:30:03.648Z",
  "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": "NCT02676765",
      "title": "Desensitization and Cross-Desensitization During Oral Grass or Ragweed Pollen Immunotherapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Immunologic Desensitization"
      ],
      "interventions": [
        {
          "name": "allergen extract tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 58,
      "start_date": "2016-06",
      "completion_date": "2018-01-18",
      "has_results": true,
      "last_update_posted_date": "2022-03-18",
      "last_synced_at": "2026-09-03T10:30:03.648Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02676765"
    },
    {
      "nct_id": "NCT01982474",
      "title": "Safety of Lymph Node Injection for Allergen Immunotherapy",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Grass pollen extract",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo injection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Amber Patterson",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "24 Years",
        "sex": "ALL",
        "summary": "15 Years to 24 Years"
      },
      "enrollment_count": 18,
      "start_date": "2013-10",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2016-02-09",
      "last_synced_at": "2026-09-03T10:30:03.648Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01982474"
    },
    {
      "nct_id": "NCT01878929",
      "title": "The Effect of Pollen Season on Subcutaneous Allergen Immunotherapy Reactions",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Allergic Rhinitis",
        "Asthma",
        "Allergic Conjunctivitis"
      ],
      "interventions": [
        {
          "name": "Allergen(Tree, Grass, Weeds)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "5 Years and older"
      },
      "enrollment_count": 245,
      "start_date": "2013-04",
      "completion_date": "2014-04",
      "has_results": false,
      "last_update_posted_date": "2013-06-17",
      "last_synced_at": "2026-09-03T10:30:03.648Z",
      "location_count": 1,
      "location_summary": "South Euclid, Ohio",
      "locations": [
        {
          "city": "South Euclid",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01878929"
    },
    {
      "nct_id": "NCT00955825",
      "title": "Study of Efficacy and Safety of 300 IR Sublingual Immunotherapy (SLIT) Tablets in Adult Patients With Allergic Grass Pollen Rhinoconjunctivitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Allergic Rhinitis Due to Grass Pollens"
      ],
      "interventions": [
        {
          "name": "300 IR",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stallergenes Greer",
      "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": 473,
      "start_date": "2008-10",
      "completion_date": "2009-08",
      "has_results": true,
      "last_update_posted_date": "2016-05-19",
      "last_synced_at": "2026-09-03T10:30:03.648Z",
      "location_count": 19,
      "location_summary": "Normal, Illinois • Lexington, Kentucky • Owensboro, Kentucky + 16 more",
      "locations": [
        {
          "city": "Normal",
          "state": "Illinois"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Owensboro",
          "state": "Kentucky"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Ypsilanti",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00955825"
    }
  ]
}