{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=EF5",
    "query": {
      "intervention": "EF5"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 20,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=EF5&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T20:42:16.533Z",
  "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": "NCT01752257",
      "title": "EF5 in Melanoma Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Melanoma"
      ],
      "interventions": [
        {
          "name": "EF5 Hypoxia",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Douglas Tyler",
      "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": "2012-07",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2015-03-09",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01752257"
    },
    {
      "nct_id": "NCT00049140",
      "title": "EF5 Compared With Other Methods of Detecting Oxygen Levels in Tumor Cells of Patients With Head and Neck Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Cancer"
      ],
      "interventions": [
        {
          "name": "EF5",
          "type": "DRUG"
        },
        {
          "name": "bioluminescence",
          "type": "OTHER"
        },
        {
          "name": "flow cytometry",
          "type": "OTHER"
        },
        {
          "name": "immunohistochemistry staining method",
          "type": "OTHER"
        },
        {
          "name": "biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "David M. Brizel, MD",
      "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": "2002-08",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2014-07-25",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00049140"
    },
    {
      "nct_id": "NCT01163487",
      "title": "Metabolic Reprogramming Therapy for Treatment of Recurrent Head and Neck Cancers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Head and Neck Cancer",
        "Head and Neck Cancers"
      ],
      "interventions": [
        {
          "name": "Dichloroacetate",
          "type": "DRUG"
        },
        {
          "name": "EF5",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Daniel T. Chang",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 17,
      "start_date": "2010-08",
      "completion_date": "2016-02",
      "has_results": false,
      "last_update_posted_date": "2022-06-16",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01163487"
    },
    {
      "nct_id": "NCT00107445",
      "title": "EF5 in Finding Oxygen in Tumor Cells of Patients Who Are Undergoing Surgery or Biopsy for Cervical, Endometrial, or Ovarian Epithelial Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Primary Peritoneal Cavity Cancer",
        "Stage I Endometrial Carcinoma",
        "Stage I Ovarian Epithelial Cancer",
        "Stage IA Cervical Cancer",
        "Stage IB Cervical Cancer",
        "Stage II Endometrial Carcinoma",
        "Stage II Ovarian Epithelial Cancer",
        "Stage IIA Cervical Cancer",
        "Stage IIB Cervical Cancer",
        "Stage III Cervical Cancer",
        "Stage III Endometrial Carcinoma",
        "Stage III Ovarian Epithelial Cancer",
        "Stage IV Endometrial Carcinoma",
        "Stage IV Ovarian Epithelial Cancer",
        "Stage IVA Cervical Cancer",
        "Stage IVB Cervical Cancer"
      ],
      "interventions": [
        {
          "name": "EF5",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 60,
      "start_date": "2005-02",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-01-16",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00107445"
    },
    {
      "nct_id": "NCT00003282",
      "title": "EF5 in Treating Patients With Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Unspecified Adult Solid Tumor, Protocol Specific"
      ],
      "interventions": [
        {
          "name": "EF5",
          "type": "DRUG"
        },
        {
          "name": "therapeutic conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "1998-03",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-01-16",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00003282"
    },
    {
      "nct_id": "NCT00028782",
      "title": "EF5 in Detecting Oxygen Level and Blood Vessels in Tumor Cells of Patients Undergoing Photodynamic Therapy for Intraperitoneal or Pleural Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Advanced Malignant Mesothelioma",
        "Localized Malignant Mesothelioma",
        "Malignant Ascites",
        "Primary Peritoneal Cavity Cancer",
        "Recurrent Malignant Mesothelioma"
      ],
      "interventions": [
        {
          "name": "etanidazole",
          "type": "DRUG"
        },
        {
          "name": "therapeutic conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2001-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-01-16",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00028782"
    },
    {
      "nct_id": "NCT00430079",
      "title": "Use of EF5 to Measure the Oxygen Level in Tumor Cells of Patients Undergoing Surgery or Biopsy for Newly Diagnosed Supratentorial Malignant Glioma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adult Anaplastic Astrocytoma",
        "Adult Anaplastic Ependymoma",
        "Adult Anaplastic Oligodendroglioma",
        "Adult Diffuse Astrocytoma",
        "Adult Ependymoma",
        "Adult Giant Cell Glioblastoma",
        "Adult Glioblastoma",
        "Adult Gliosarcoma",
        "Adult Mixed Glioma",
        "Adult Myxopapillary Ependymoma",
        "Adult Oligodendroglioma",
        "Adult Pilocytic Astrocytoma",
        "Adult Pineal Gland Astrocytoma",
        "Adult Subependymoma"
      ],
      "interventions": [
        {
          "name": "etanidazole",
          "type": "DRUG"
        },
        {
          "name": "conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2001-07",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-01-16",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00430079"
    },
    {
      "nct_id": "NCT00110032",
      "title": "Positron Emission Tomography Using Fluorine F 18 EF5 to Find Oxygen in Tumor Cells of Patients Who Are Undergoing Surgery or Biopsy for Newly Diagnosed Brain Tumors",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Adult Anaplastic Astrocytoma",
        "Adult Anaplastic Ependymoma",
        "Adult Anaplastic Oligodendroglioma",
        "Adult Brain Stem Glioma",
        "Adult Central Nervous System Germ Cell Tumor",
        "Adult Choroid Plexus Tumor",
        "Adult Craniopharyngioma",
        "Adult Diffuse Astrocytoma",
        "Adult Ependymoblastoma",
        "Adult Ependymoma",
        "Adult Giant Cell Glioblastoma",
        "Adult Glioblastoma",
        "Adult Gliosarcoma",
        "Adult Grade I Meningioma",
        "Adult Grade II Meningioma",
        "Adult Grade III Meningioma",
        "Adult Medulloblastoma",
        "Adult Meningeal Hemangiopericytoma",
        "Adult Mixed Glioma",
        "Adult Myxopapillary Ependymoma",
        "Adult Oligodendroglioma",
        "Adult Pilocytic Astrocytoma",
        "Adult Pineoblastoma",
        "Adult Pineocytoma",
        "Adult Subependymoma",
        "Adult Supratentorial Primitive Neuroectodermal Tumor (PNET)",
        "Meningeal Melanocytoma"
      ],
      "interventions": [
        {
          "name": "EF5",
          "type": "DRUG"
        },
        {
          "name": "conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "positron emission tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "fluorine F 18 EF5",
          "type": "RADIATION"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2005-06",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-01-16",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00110032"
    },
    {
      "nct_id": "NCT01055678",
      "title": "To Evaluate the Characteristics of a Breast Cancer",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "EF5",
          "type": "DRUG"
        },
        {
          "name": "Partial or Total Mastectomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Mark Dewhirst",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2010-01",
      "completion_date": "2011-12",
      "has_results": false,
      "last_update_posted_date": "2012-12-17",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01055678"
    },
    {
      "nct_id": "NCT01020097",
      "title": "Fluorine F 18 EF5 Positron Emission Tomography in Assessing Hypoxia in Patients With Newly Diagnosed Stage I, Stage II, Stage III, or Stage IV Head or Neck Squamous Cell Cancer of the Oral Cavity, Oropharynx, and Larynx",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "fluorine F18 EF5",
          "type": "DRUG"
        },
        {
          "name": "immunohistochemistry staining method",
          "type": "PROCEDURE"
        },
        {
          "name": "biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5,
      "start_date": "2009-03",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2020-04-28",
      "last_synced_at": "2026-09-02T20:42:16.533Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01020097"
    }
  ]
}