{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Metastatic+Undifferentiated+Round+Cell+Sarcoma",
    "query": {
      "condition": "Metastatic Undifferentiated Round Cell Sarcoma"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-25T21:51:32.273Z",
  "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": "NCT00445965",
      "title": "Iodine I 131 Monoclonal Antibody 3F8 in Treating Patients With Central Nervous System Cancer or Leptomeningeal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Brain and Central Nervous System Tumors",
        "Intraocular Melanoma",
        "Lung Cancer",
        "Melanoma (Skin)",
        "Metastatic Cancer",
        "Neuroblastoma",
        "Ovarian Cancer",
        "Retinoblastoma",
        "Sarcoma",
        "Small Intestine Cancer"
      ],
      "interventions": [
        {
          "name": "DNA analysis",
          "type": "GENETIC"
        },
        {
          "name": "immunologic technique",
          "type": "OTHER"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        },
        {
          "name": "iodine I 131 monoclonal antibody 3F8",
          "type": "RADIATION"
        },
        {
          "name": "131I-3F8",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER",
        "RADIATION"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 78,
      "start_date": "2006-01",
      "completion_date": "2023-02-01",
      "has_results": true,
      "last_update_posted_date": "2024-04-04",
      "last_synced_at": "2026-06-25T21:51:32.273Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00445965"
    },
    {
      "nct_id": "NCT03670069",
      "title": "Itacitinib in Treating Patients With Refractory Metastatic/Advanced Sarcomas",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Metastatic Leiomyosarcoma",
        "Metastatic Synovial Sarcoma",
        "Metastatic Undifferentiated Pleomorphic Sarcoma",
        "Advanced Myxoid Liposarcoma",
        "Advanced Soft Tissue Sarcoma",
        "Metastatic Myxoid Liposarcoma",
        "Metastatic Round Cell Liposarcoma",
        "Metastatic Soft Tissue Sarcoma",
        "Refractory Leiomyosarcoma",
        "Refractory Myxoid Liposarcoma",
        "Refractory Round Cell Liposarcoma",
        "Refractory Soft Tissue Sarcoma",
        "Refractory Synovial Sarcoma",
        "Refractory Undifferentiated Pleomorphic Sarcoma",
        "Advanced Leiomyosarcoma",
        "Advanced Synovial Sarcoma",
        "Advanced Undifferentiated Pleomorphic Sarcoma",
        "Metastatic Chondrosarcoma"
      ],
      "interventions": [
        {
          "name": "Itacitinib",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Fred Hutchinson 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": 27,
      "start_date": "2019-09-30",
      "completion_date": "2024-05-06",
      "has_results": false,
      "last_update_posted_date": "2024-05-08",
      "last_synced_at": "2026-06-25T21:51:32.273Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03670069"
    },
    {
      "nct_id": "NCT00720174",
      "title": "Cixutumumab and Doxorubicin Hydrochloride in Treating Patients With Unresectable, Locally Advanced, or Metastatic Soft Tissue Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Adult Angiosarcoma",
        "Adult Desmoplastic Small Round Cell Tumor",
        "Adult Epithelioid Sarcoma",
        "Adult Extraskeletal Myxoid Chondrosarcoma",
        "Adult Extraskeletal Osteosarcoma",
        "Adult Fibrosarcoma",
        "Adult Leiomyosarcoma",
        "Adult Liposarcoma",
        "Adult Malignant Mesenchymoma",
        "Adult Malignant Peripheral Nerve Sheath Tumor",
        "Adult Rhabdomyosarcoma",
        "Adult Synovial Sarcoma",
        "Adult Undifferentiated High Grade Pleomorphic Sarcoma of Bone",
        "Childhood Angiosarcoma",
        "Childhood Desmoplastic Small Round Cell Tumor",
        "Childhood Epithelioid Sarcoma",
        "Childhood Fibrosarcoma",
        "Childhood Leiomyosarcoma",
        "Childhood Liposarcoma",
        "Childhood Malignant Mesenchymoma",
        "Childhood Malignant Peripheral Nerve Sheath Tumor",
        "Childhood Pleomorphic Rhabdomyosarcoma",
        "Childhood Rhabdomyosarcoma With Mixed Embryonal and Alveolar Features",
        "Childhood Synovial Sarcoma",
        "Dermatofibrosarcoma Protuberans",
        "Malignant Adult Hemangiopericytoma",
        "Malignant Childhood Hemangiopericytoma",
        "Metastatic Childhood Soft Tissue Sarcoma",
        "Previously Treated Childhood Rhabdomyosarcoma",
        "Recurrent Adult Soft Tissue Sarcoma",
        "Recurrent Childhood Rhabdomyosarcoma",
        "Recurrent Childhood Soft Tissue Sarcoma",
        "Stage III Adult Soft Tissue Sarcoma",
        "Stage IV Adult Soft Tissue Sarcoma",
        "Untreated Childhood Rhabdomyosarcoma"
      ],
      "interventions": [
        {
          "name": "Cixutumumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Doxorubicin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2008-06",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2016-05-17",
      "last_synced_at": "2026-06-25T21:51:32.273Z",
      "location_count": 13,
      "location_summary": "Chicago, Illinois • Decatur, Illinois • Evanston, Illinois + 10 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Decatur",
          "state": "Illinois"
        },
        {
          "city": "Evanston",
          "state": "Illinois"
        },
        {
          "city": "Harvey",
          "state": "Illinois"
        },
        {
          "city": "Joliet",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00720174"
    },
    {
      "nct_id": "NCT00474994",
      "title": "Sunitinib in Treating Patients With Metastatic, Locally Advanced, or Locally Recurrent Sarcomas",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adult Malignant Fibrous Histiocytoma of Bone",
        "Desmoid Tumor",
        "Endometrial Cancer",
        "Ovarian Cancer",
        "Sarcoma",
        "Small Intestine Cancer"
      ],
      "interventions": [
        {
          "name": "sunitinib malate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 53,
      "start_date": "2007-04",
      "completion_date": "2010-11",
      "has_results": true,
      "last_update_posted_date": "2016-01-20",
      "last_synced_at": "2026-06-25T21:51:32.273Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • New York, New York",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00474994"
    },
    {
      "nct_id": "NCT06820957",
      "title": "Testing a New Combination of Anti-cancer Drugs in Patients Newly Diagnosed With Ewing Sarcoma Who Have Cancer That Has Spread to Other Parts of the Body",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "CIC-Rearranged Sarcoma",
        "Metastatic Ewing Sarcoma",
        "Metastatic High Grade Sarcoma",
        "Metastatic Undifferentiated Round Cell Sarcoma",
        "Metastatic Undifferentiated Sarcoma, Not Otherwise Specified",
        "Round Cell Sarcoma With EWSR1-non-ETS Fusion",
        "Sarcoma With BCOR Genetic Alterations"
      ],
      "interventions": [
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Aspiration",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Etoposide",
          "type": "DRUG"
        },
        {
          "name": "Fludeoxyglucose F-18",
          "type": "OTHER"
        },
        {
          "name": "Ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "Irinotecan Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Regorafenib",
          "type": "DRUG"
        },
        {
          "name": "Surgical Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Vincristine Sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "OTHER",
        "RADIATION"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "12 Years to 50 Years"
      },
      "enrollment_count": 437,
      "start_date": "2025-11-10",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-23",
      "last_synced_at": "2026-06-25T21:51:32.273Z",
      "location_count": 9,
      "location_summary": "Birmingham, Alabama • Honolulu, Hawaii • Chicago, Illinois + 6 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Mineola",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06820957"
    }
  ]
}