{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Challenge%3A+Control%2C+irradiation",
    "query": {
      "intervention": "Challenge: Control, irradiation"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 21,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Challenge%3A+Control%2C+irradiation&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T18:04:31.500Z",
  "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": "NCT05020496",
      "title": "Trem-1 and Ultraviolet Radiation-induced Immune Suppression",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Skin Diseases"
      ],
      "interventions": [
        {
          "name": "Diphenylcyclopropenone (DPCP)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 70,
      "start_date": "2022-03-21",
      "completion_date": "2027-10-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-20",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05020496"
    },
    {
      "nct_id": "NCT01994525",
      "title": "Immunization Via Mosquito Bite With Radiation-attenuated Sporozoites",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Malaria"
      ],
      "interventions": [
        {
          "name": "PfRAS",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Challenge",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "U.S. Army Medical Research and Development Command",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 54,
      "start_date": "2014-01-24",
      "completion_date": "2017-02",
      "has_results": false,
      "last_update_posted_date": "2019-09-17",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01994525"
    },
    {
      "nct_id": "NCT03473197",
      "title": "A 6-Week Study to Evaluate the Photoallergic Potential of Diacerein 1% Ointment in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Diacerein 1% ointment",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Castle Creek Pharmaceuticals, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 61,
      "start_date": "2018-01-08",
      "completion_date": "2018-03-09",
      "has_results": true,
      "last_update_posted_date": "2020-02-05",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Fair Lawn, New Jersey",
      "locations": [
        {
          "city": "Fair Lawn",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03473197"
    },
    {
      "nct_id": "NCT05347290",
      "title": "Comparison Of Effective Radiation Shielding Between Rampart IC, M1128 Shield vs Conventional Apron And Shields In Clinical Interventional Procedures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Radiation Exposure"
      ],
      "interventions": [
        {
          "name": "Rampart IC, M1128",
          "type": "DEVICE"
        },
        {
          "name": "Lead Apron and Ancillary Shield",
          "type": "DEVICE"
        },
        {
          "name": "Rampart IC, M1128 and Lead Apron",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Northwell Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 63,
      "start_date": "2022-03-09",
      "completion_date": "2022-12-09",
      "has_results": false,
      "last_update_posted_date": "2023-02-03",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05347290"
    },
    {
      "nct_id": "NCT04966871",
      "title": "Safety, Tolerability and Efficacy of PfSPZ Vaccine Against Heterologous CHMI in US Malaria naïve Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Malaria"
      ],
      "interventions": [
        {
          "name": "PfSPZ Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PfSPZ Challenge (7G8) for CHMI",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Normal Saline",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Sanaria Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 54,
      "start_date": "2021-09-27",
      "completion_date": "2022-06-21",
      "has_results": false,
      "last_update_posted_date": "2022-07-18",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04966871"
    },
    {
      "nct_id": "NCT02062840",
      "title": "The Brain on Whole Body Hyperthermia: A Neuroimaging Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Major Depression"
      ],
      "interventions": [
        {
          "name": "High intensity whole-body infrared heating",
          "type": "DEVICE"
        },
        {
          "name": "Low intensity whole-body infrared heating",
          "type": "DEVICE"
        },
        {
          "name": "Functional Magnetic Resonance Imaging (fMRI) and electrocardiogram (EKG)",
          "type": "DEVICE"
        },
        {
          "name": "Questionnaires",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of Arizona",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 23,
      "start_date": "2014-02",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2015-08-10",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02062840"
    },
    {
      "nct_id": "NCT00283816",
      "title": "Impact of Metformin in Teens With Polycystic Ovary Syndrome (PCOS) on Oral Contraceptive Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Polycystic Ovary Syndrome"
      ],
      "interventions": [
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Oral Contraceptive Pill",
          "type": "DRUG"
        },
        {
          "name": "Lifestyle Management Program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Quality of Life Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Oral Glucose Tolerance Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood work",
          "type": "PROCEDURE"
        },
        {
          "name": "Abdominal Ultra Sound",
          "type": "PROCEDURE"
        },
        {
          "name": "Dual-energy x-ray absorptiometry (DEXA scan)",
          "type": "PROCEDURE"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL",
        "PROCEDURE"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "FEMALE",
        "summary": "12 Years to 18 Years · Female only"
      },
      "enrollment_count": 36,
      "start_date": "2006-01",
      "completion_date": "2008-01",
      "has_results": true,
      "last_update_posted_date": "2015-05-15",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00283816"
    },
    {
      "nct_id": "NCT04773184",
      "title": "Improving Diagnostic Standards in Dysphagia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Dysphagia"
      ],
      "interventions": [
        {
          "name": "Fiberoptic Endoscopic Evaluation of Swallowing",
          "type": "PROCEDURE"
        },
        {
          "name": "Videofluoroscopic Swallowing Study",
          "type": "PROCEDURE"
        },
        {
          "name": "Voluntary Peak Cough Flow Testing",
          "type": "PROCEDURE"
        },
        {
          "name": "Iowa Oral Performance Instrument",
          "type": "PROCEDURE"
        },
        {
          "name": "Capsaicin Challenge",
          "type": "PROCEDURE"
        },
        {
          "name": "Pulmonary Function Testing",
          "type": "PROCEDURE"
        },
        {
          "name": "Voicing Tasks",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 46,
      "start_date": "2021-04-27",
      "completion_date": "2023-09-23",
      "has_results": false,
      "last_update_posted_date": "2024-01-17",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04773184"
    },
    {
      "nct_id": "NCT04058132",
      "title": "Cerebrovascular Reactivity Assessed With fNIRS as a Biomarker of TCVI After Acute Traumatic Brain Injury in Military",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "Sildenafil Citrate 50Mg Tab",
          "type": "DRUG"
        },
        {
          "name": "functional Near-infrared Spectroscopy (fNIRS)",
          "type": "DEVICE"
        },
        {
          "name": "Carbon Dioxide (CO2) 5%",
          "type": "OTHER"
        },
        {
          "name": "Neuropsychological Assessments",
          "type": "OTHER"
        },
        {
          "name": "Gadolinium contrast infusion",
          "type": "DRUG"
        },
        {
          "name": "Blood sample collection for research purposes",
          "type": "PROCEDURE"
        },
        {
          "name": "Structural brain Magnetic Resonance Imaging (MRI",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Uniformed Services University of the Health Sciences",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 1,
      "start_date": "2019-08-09",
      "completion_date": "2020-03-01",
      "has_results": false,
      "last_update_posted_date": "2024-02-28",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04058132"
    },
    {
      "nct_id": "NCT05604521",
      "title": "A Phase 1 Trial of PfSPZ Vaccine in Healthy Adults to Determine Safety, Tolerability and Efficacy Against Heterologous CHMI",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Malaria",
        "Malaria,Falciparum"
      ],
      "interventions": [
        {
          "name": "PfSPZ Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PfSPZ Challenge (7G8)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Normal Saline",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Sanaria Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 31,
      "start_date": "2022-12-06",
      "completion_date": "2023-09-05",
      "has_results": true,
      "last_update_posted_date": "2024-11-25",
      "last_synced_at": "2026-09-22T18:04:31.500Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05604521"
    }
  ]
}