{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=H1+receptor+antagonist",
    "query": {
      "intervention": "H1 receptor antagonist"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 98,
    "total_pages": 10,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=H1+receptor+antagonist&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T04:13:10.898Z",
  "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": "NCT01661777",
      "title": "Refractory Eustachian Tube Dysfunction: Are the Symptoms Related to Endolymphatic Hydrops",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eustachian Tube Dysfunction",
        "Endolymphatic Hydrops"
      ],
      "interventions": [
        {
          "name": "Nasal steroid",
          "type": "DRUG"
        },
        {
          "name": "Myringotomy tube placement",
          "type": "PROCEDURE"
        },
        {
          "name": "Diuretic",
          "type": "DRUG"
        },
        {
          "name": "Antihistamine",
          "type": "DRUG"
        },
        {
          "name": "Low salt diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "BEHAVIORAL"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 0,
      "start_date": "2012-08",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2014-05-29",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01661777"
    },
    {
      "nct_id": "NCT02654964",
      "title": "Cancer Stem Cell High-Throughput Drug Screening Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Glioblastoma Multiforme"
      ],
      "interventions": [
        {
          "name": "Combination Drug Therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Swedish Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2015-12",
      "completion_date": "2023-06",
      "has_results": false,
      "last_update_posted_date": "2024-04-10",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02654964"
    },
    {
      "nct_id": "NCT02031679",
      "title": "Efficacy and Safety of Chemoattractant Receptor-homologous Molecule Expressed on T Helper Type 2 (CRTh2) Antagonist AZD1981 in Chronic Idiopathic Urticaria (CIU) Antihistamines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Idiopathic Urticaria"
      ],
      "interventions": [
        {
          "name": "AZD1981",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 38,
      "start_date": "2014-01",
      "completion_date": "2016-01",
      "has_results": true,
      "last_update_posted_date": "2017-07-12",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02031679"
    },
    {
      "nct_id": "NCT00887640",
      "title": "Impact of Temsirolimus Therapy on Circulating Tumor Cell Biology In Men With Castration Resistant Metastatic Prostate Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Temsirolimus",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 11,
      "start_date": "2009-07",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2014-02-26",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Norfolk, Virginia",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00887640"
    },
    {
      "nct_id": "NCT01264939",
      "title": "A Safety Study of Xolair (Omalizumab) in Patients With Chronic Idiopathic Urticaria (CIU) Who Remain Symptomatic Despite Treatment With H1 Antihistamines, H2 Blockers, and/or Leukotriene Receptor Antagonists",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chronic Idiopathic Urticaria"
      ],
      "interventions": [
        {
          "name": "Omalizumab",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "H1 antihistamine, H2 antihistamine, leukotriene receptor antagonist",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Genentech, 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": 336,
      "start_date": "2011-02",
      "completion_date": "2012-11",
      "has_results": true,
      "last_update_posted_date": "2013-11-26",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 40,
      "location_summary": "Scottsdale, Arizona • Mission Viejo, California • Napa, California + 35 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Napa",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01264939"
    },
    {
      "nct_id": "NCT04612803",
      "title": "Antihistamines in the Treatment of Irritable Bowel Syndrome With Diarrhea",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Irritable Bowel Syndrome",
        "Dermatographism",
        "Post-prandial Diarrhea"
      ],
      "interventions": [
        {
          "name": "Antihistamine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-02-01",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-09-04",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04612803"
    },
    {
      "nct_id": "NCT06445023",
      "title": "A Phase 3 Study of Barzolvolimab in Participants With Chronic Spontaneous Urticaria",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chronic Spontaneous Urticaria"
      ],
      "interventions": [
        {
          "name": "barzolvolimab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Matching placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Celldex Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 963,
      "start_date": "2024-07-11",
      "completion_date": "2027-04",
      "has_results": false,
      "last_update_posted_date": "2026-03-25",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 58,
      "location_summary": "Birmingham, Alabama • Fountain Valley, California • Inglewood, California + 50 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Inglewood",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06445023"
    },
    {
      "nct_id": "NCT02655458",
      "title": "Elotuzumab in Autologous Stem Cell Transplantation (ASCT) and Lenalidomide Maintenance for Multiple Myeloma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Elotuzumab",
          "type": "DRUG"
        },
        {
          "name": "Lenalidomide",
          "type": "DRUG"
        },
        {
          "name": "autologous PBMC reconstitution",
          "type": "OTHER"
        },
        {
          "name": "ASCT",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Hearn Jay Cho",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2016-01",
      "completion_date": "2017-07-13",
      "has_results": false,
      "last_update_posted_date": "2017-08-18",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02655458"
    },
    {
      "nct_id": "NCT02906670",
      "title": "Sym013 (Pan-HER) in Patients With Advanced Epithelial Malignancies",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Oncology"
      ],
      "interventions": [
        {
          "name": "Sym013",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Symphogen A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2016-11-01",
      "completion_date": "2019-06",
      "has_results": true,
      "last_update_posted_date": "2020-08-28",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 3,
      "location_summary": "Nashville, Tennessee • San Antonio, Texas",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02906670"
    },
    {
      "nct_id": "NCT03000179",
      "title": "Safety and Efficacy of Avelumab in Small Intestinal Adenocarcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Avelumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt-Ingram 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": 8,
      "start_date": "2017-03-03",
      "completion_date": "2021-08-03",
      "has_results": true,
      "last_update_posted_date": "2022-04-14",
      "last_synced_at": "2026-09-25T04:13:10.898Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03000179"
    }
  ]
}