{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Nasal+Allergen+Challenge",
    "query": {
      "intervention": "Nasal Allergen Challenge"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 25,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Nasal+Allergen+Challenge&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T21:36:03.484Z",
  "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": "NCT07447869",
      "title": "LYmph Node eXamination in Cat Allergen Immunotherapy",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Allergy"
      ],
      "interventions": [
        {
          "name": "Intradermal cat allergen challenge",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 16,
      "start_date": "2026-04-10",
      "completion_date": "2027-01-27",
      "has_results": false,
      "last_update_posted_date": "2026-05-01",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07447869"
    },
    {
      "nct_id": "NCT00118729",
      "title": "Study In Adolescent And Adult Subjects 12 Years Of Age And Older With Seasonal Allergic Rhinitis To Assess Onset of Action",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Rhinitis, Allergic, Seasonal"
      ],
      "interventions": [
        {
          "name": "GW685698X Aqueous Nasal Spray",
          "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": 380,
      "start_date": "2005-04",
      "completion_date": "2005-08",
      "has_results": false,
      "last_update_posted_date": "2016-09-15",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Woodstock, Georgia",
      "locations": [
        {
          "city": "Woodstock",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00118729"
    },
    {
      "nct_id": "NCT00985296",
      "title": "Conjunctival Allergen Challenge (CAC) Following Allergen Exposure in the Allergen BioCube (ABC)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Allergic Rhinoconjunctivitis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "ORA, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2009-09",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2010-09-21",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Andover, Massachusetts",
      "locations": [
        {
          "city": "Andover",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00985296"
    },
    {
      "nct_id": "NCT03023397",
      "title": "Evaluation of the Effect of a Nasal Allergen Challenge With Dermatophagoides Farinae Extract on Nasal Airway Inflammation in Allergic Individuals, Comparing E-cigarette Users to Cigarette Smokers and Non-smokers.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Participants",
        "Tobacco Smokers"
      ],
      "interventions": [
        {
          "name": "Der f",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 12,
      "start_date": "2017-03-27",
      "completion_date": "2018-04-23",
      "has_results": true,
      "last_update_posted_date": "2021-06-04",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03023397"
    },
    {
      "nct_id": "NCT03039101",
      "title": "Leukotriene Antagonism in Recruitment of CD49d Expressing Neutrophils in Atopic Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nasal Allergy"
      ],
      "interventions": [
        {
          "name": "Nasal lavage",
          "type": "PROCEDURE"
        },
        {
          "name": "Nasal allergen challenge",
          "type": "PROCEDURE"
        },
        {
          "name": "Epicutaneous skin testing",
          "type": "PROCEDURE"
        },
        {
          "name": "Peripheral blood",
          "type": "PROCEDURE"
        },
        {
          "name": "Montelukast 10Mg Tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Mitchell Grayson",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 25,
      "start_date": "2017-09-06",
      "completion_date": "2018-07-16",
      "has_results": false,
      "last_update_posted_date": "2019-10-07",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03039101"
    },
    {
      "nct_id": "NCT01007253",
      "title": "Effect of Veramyst and Olopatadine 0.2% Opthalmic Solution on Allergy Symptoms",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Seasonal Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "PL nasal spray",
          "type": "DRUG"
        },
        {
          "name": "fluticasone furoate (FF)",
          "type": "DRUG"
        },
        {
          "name": "PL eye drops",
          "type": "DRUG"
        },
        {
          "name": "olopatadine (OLO)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 21,
      "start_date": "2009-11",
      "completion_date": "2011-08",
      "has_results": true,
      "last_update_posted_date": "2013-07-17",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01007253"
    },
    {
      "nct_id": "NCT01231724",
      "title": "Topical Allstate and Nasal Allergen Challenge",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Allstate Nasal Spray",
          "type": "DEVICE"
        },
        {
          "name": "Placebo Nasal Spray",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 0,
      "start_date": "2011-11",
      "completion_date": "2012-04",
      "has_results": false,
      "last_update_posted_date": "2013-06-03",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01231724"
    },
    {
      "nct_id": "NCT01723397",
      "title": "Effect of Nasaleze on Nasal Challenge With Allergen",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Nasaleze Spray",
          "type": "DRUG"
        },
        {
          "name": "Placebo spray",
          "type": "OTHER"
        },
        {
          "name": "Allergen",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "BIOLOGICAL"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 14,
      "start_date": "2012-11",
      "completion_date": "2014-07",
      "has_results": true,
      "last_update_posted_date": "2017-01-02",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01723397"
    },
    {
      "nct_id": "NCT03541187",
      "title": "Cockroach Immunotherapy in Children and Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Persistent Asthma"
      ],
      "interventions": [
        {
          "name": "German cockroach allergenic extract",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo for German cockroach allergenic extract",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "8 Years to 17 Years"
      },
      "enrollment_count": 82,
      "start_date": "2018-07-16",
      "completion_date": "2022-06-03",
      "has_results": true,
      "last_update_posted_date": "2023-05-22",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 11,
      "location_summary": "Aurora, Colorado • Washington D.C., District of Columbia • Chicago, Illinois + 7 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03541187"
    },
    {
      "nct_id": "NCT01240889",
      "title": "Effects of Intranasal Corticosteroid and Montelukast On Nasal Allergen Challenges*",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Allergy"
      ],
      "interventions": [
        {
          "name": "Fluticasone",
          "type": "DRUG"
        },
        {
          "name": "Fluticason",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "19 Years to 60 Years"
      },
      "enrollment_count": 60,
      "start_date": "2010-11",
      "completion_date": "2011-07",
      "has_results": false,
      "last_update_posted_date": "2012-10-10",
      "last_synced_at": "2026-09-25T21:36:03.484Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01240889"
    }
  ]
}