{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Extraosseous+Ewing+Sarcoma",
    "query": {
      "condition": "Extraosseous Ewing Sarcoma"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 8,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T00:12:06.756Z",
  "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": "NCT00516295",
      "title": "Vincristine Sulfate, Topotecan Hydrochloride, and Cyclophosphamide With or Without Bevacizumab in Treating Young Patients With Refractory or First Recurrent Extracranial Ewing Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ewing Sarcoma of Bone",
        "Extraosseous Ewing Sarcoma",
        "Peripheral Primitive Neuroectodermal Tumor",
        "Recurrent Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor"
      ],
      "interventions": [
        {
          "name": "topotecan hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "vincristine sulfate",
          "type": "DRUG"
        },
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "bevacizumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "29 Years",
        "sex": "ALL",
        "summary": "1 Year to 29 Years"
      },
      "enrollment_count": 7,
      "start_date": "2008-02",
      "completion_date": "2010-01",
      "has_results": true,
      "last_update_posted_date": "2014-09-02",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00516295"
    },
    {
      "nct_id": "NCT00003667",
      "title": "Combination Chemotherapy and Biological Therapy in Treating Patients With High-Risk Ewing's Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "dexrazoxane hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "disaccharide tripeptide glycerol dipalmitoyl",
          "type": "DRUG"
        },
        {
          "name": "doxorubicin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "vincristine sulfate",
          "type": "DRUG"
        },
        {
          "name": "surgical procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "3 Years to 60 Years"
      },
      "enrollment_count": null,
      "start_date": "1998-09",
      "completion_date": "2000-08",
      "has_results": false,
      "last_update_posted_date": "2013-06-25",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 2,
      "location_summary": "New York, New York • Houston, Texas",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00003667"
    },
    {
      "nct_id": "NCT01825902",
      "title": "18F-FLT Positron Emission Tomography and Diffusion-Weighted Magnetic Resonance Imaging in Planning Surgery and Radiation Therapy and Measuring Response in Patients With Newly Diagnosed Ewing Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Adult Supratentorial Primitive Neuroectodermal Tumor (PNET)",
        "Ewing Sarcoma of Bone",
        "Extraosseous Ewing Sarcoma",
        "Localized Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor",
        "Metastatic Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor",
        "Untreated Childhood Supratentorial Primitive Neuroectodermal Tumor"
      ],
      "interventions": [
        {
          "name": "fluorine F 18 fluorothymidine",
          "type": "DRUG"
        },
        {
          "name": "fludeoxyglucose F 18",
          "type": "RADIATION"
        },
        {
          "name": "positron emission tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "diffusion-weighted magnetic resonance imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "7 Years and older"
      },
      "enrollment_count": 1,
      "start_date": "2013-03",
      "completion_date": "2015-11-23",
      "has_results": false,
      "last_update_posted_date": "2017-11-20",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01825902"
    },
    {
      "nct_id": "NCT01795430",
      "title": "Whole-Body Radiation Therapy, Systemic Chemotherapy, and High-Dose Chemotherapy Followed By Stem Cell Rescue in Treating Patients With Poor-Risk Ewing Sarcoma",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adult Supratentorial Primitive Neuroectodermal Tumor (PNET)",
        "Ewing Sarcoma of Bone",
        "Extraosseous Ewing Sarcoma",
        "Metastatic Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor",
        "Recurrent Childhood Supratentorial Primitive Neuroectodermal Tumor",
        "Recurrent Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor",
        "Untreated Childhood Supratentorial Primitive Neuroectodermal Tumor"
      ],
      "interventions": [
        {
          "name": "etoposide",
          "type": "DRUG"
        },
        {
          "name": "ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "intensity-modulated radiation therapy",
          "type": "RADIATION"
        },
        {
          "name": "topotecan hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "busulfan",
          "type": "DRUG"
        },
        {
          "name": "melphalan",
          "type": "DRUG"
        },
        {
          "name": "autologous hematopoietic stem cell transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "peripheral blood stem cell transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "autologous bone marrow transplantation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "City of Hope Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "6 Months to 40 Years"
      },
      "enrollment_count": 0,
      "start_date": "2013-07",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2015-01-09",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 1,
      "location_summary": "Duarte, California",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01795430"
    },
    {
      "nct_id": "NCT01222767",
      "title": "Study of Zalypsis® (PM00104) in Patients With Unresectable Locally Advanced and/or Metastatic Ewing Family of Tumors (EFT) Progressing After at Least One Prior Line of Chemotherapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ewing's Sarcoma",
        "Primitive Neuroectodermal Tumor (PNET)",
        "Askin's Tumor of the Chest Wall",
        "Extraosseous Ewing's Sarcoma (EOE)"
      ],
      "interventions": [
        {
          "name": "Zalypsis",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "PharmaMar",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 17,
      "start_date": "2010-12",
      "completion_date": "2012-04",
      "has_results": true,
      "last_update_posted_date": "2021-10-29",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 3,
      "location_summary": "Santa Monica, California • Memphis, Tennessee • Seattle, Washington",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01222767"
    },
    {
      "nct_id": "NCT00003745",
      "title": "Chemotherapy in Treating Children With Recurrent or Refractory Sarcomas",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "topotecan hydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 125,
      "start_date": "1999-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-02-05",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 206,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 151 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00003745"
    },
    {
      "nct_id": "NCT01231906",
      "title": "Combination Chemotherapy in Treating Patients With Non-Metastatic Extracranial Ewing Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Localized Extraskeletal Ewing Sarcoma",
        "Peripheral Primitive Neuroectodermal Tumor of Bone",
        "Peripheral Primitive Neuroectodermal Tumor of Soft Tissues"
      ],
      "interventions": [
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Dexrazoxane",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Etoposide",
          "type": "DRUG"
        },
        {
          "name": "Ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Topotecan Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Vincristine Sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "Up to 50 Years"
      },
      "enrollment_count": 642,
      "start_date": "2010-11-24",
      "completion_date": "2025-12-31",
      "has_results": true,
      "last_update_posted_date": "2026-01-23",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 215,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 149 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01231906"
    },
    {
      "nct_id": "NCT01132547",
      "title": "Cyproheptadine in Preventing Weight Loss in Children Receiving Chemotherapy for Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "cyproheptadine hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "2 Years to 21 Years"
      },
      "enrollment_count": 22,
      "start_date": "2010-06",
      "completion_date": "2014-01",
      "has_results": true,
      "last_update_posted_date": "2015-07-02",
      "last_synced_at": "2026-05-22T00:12:06.756Z",
      "location_count": 14,
      "location_summary": "Long Beach, California • Hartford, Connecticut • Wilmington, Delaware + 10 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Hartford",
          "state": "Connecticut"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01132547"
    }
  ]
}