{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Round+Cell+Sarcoma%2C+Undifferentiated",
    "query": {
      "condition": "Round Cell Sarcoma, Undifferentiated"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 9,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T15:50:13.285Z",
  "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": "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": "2026-09-04T15:50:13.285Z",
      "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": "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": "2026-09-04T15:50:13.285Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03670069"
    },
    {
      "nct_id": "NCT05918640",
      "title": "Lurbinectedin in FET-Fused Tumors",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Ewing Sarcoma",
        "Desmoplastic Small Round Cell Tumor",
        "Pediatric Cancer",
        "Undifferentiated Sarcoma"
      ],
      "interventions": [
        {
          "name": "Lurbinectedin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "10 Years and older"
      },
      "enrollment_count": 63,
      "start_date": "2023-07-27",
      "completion_date": "2029-07-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-02",
      "last_synced_at": "2026-09-04T15:50:13.285Z",
      "location_count": 6,
      "location_summary": "Los Angeles, California • Iowa City, Iowa • Boston, Massachusetts + 3 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05918640"
    },
    {
      "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": 2,
      "start_date": "2025-11-10",
      "completion_date": "2027-08-19",
      "has_results": false,
      "last_update_posted_date": "2026-08-21",
      "last_synced_at": "2026-09-04T15:50:13.285Z",
      "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"
    },
    {
      "nct_id": "NCT01532687",
      "title": "Gemcitabine With or Without Pazopanib in Treating Patients With Refractory Soft Tissue Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adult Alveolar Soft Part Sarcoma",
        "Adult Angiosarcoma",
        "Adult Desmoplastic Small Round Cell Tumor",
        "Adult Epithelioid Hemangioendothelioma",
        "Adult Epithelioid Sarcoma",
        "Adult Extraskeletal Myxoid Chondrosarcoma",
        "Adult Extraskeletal Osteosarcoma",
        "Adult Fibrosarcoma",
        "Adult Leiomyosarcoma",
        "Adult Liposarcoma",
        "Adult Malignant Peripheral Nerve Sheath Tumor",
        "Adult Rhabdomyosarcoma",
        "Adult Synovial Sarcoma",
        "Adult Undifferentiated Pleomorphic Sarcoma",
        "Malignant Adult Hemangiopericytoma",
        "Recurrent Adult Soft Tissue Sarcoma",
        "Sarcoma",
        "Stage III Adult Soft Tissue Sarcoma AJCC v7",
        "Stage IV Adult Soft Tissue Sarcoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Gemcitabine",
          "type": "DRUG"
        },
        {
          "name": "Gemcitabine Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Pazopanib",
          "type": "DRUG"
        },
        {
          "name": "Pazopanib Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Placebo Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "OHSU Knight Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 54,
      "start_date": "2012-03-13",
      "completion_date": "2019-10-31",
      "has_results": true,
      "last_update_posted_date": "2021-09-27",
      "last_synced_at": "2026-09-04T15:50:13.285Z",
      "location_count": 2,
      "location_summary": "Portland, Oregon • Seattle, Washington",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01532687"
    },
    {
      "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": "2026-09-04T15:50:13.285Z",
      "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": "NCT06239272",
      "title": "NRSTS2021, A Risk Adapted Study Evaluating Maintenance Pazopanib, Limited Margin, Dose-Escalated Radiation Therapy and Selinexor in Non-Rhabdomyosarcoma Soft Tissue Sarcoma (NRSTS)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Adipocytic Neoplasm",
        "Liposarcoma",
        "Atypical Fibroxanthoma",
        "Angiomatoid Fibrous Histiocytoma",
        "Fibrosarcoma NOS",
        "Myxofibrosarcoma",
        "Angiosarcoma",
        "Osteosarcoma, Extraskeletal",
        "Dedifferentiated Liposarcoma",
        "Myxoid Liposarcoma",
        "Pleomorphic Liposarcoma",
        "Myxoid Pleomorphic Liposarcoma",
        "Low Grade Fibromyxoid Sarcoma",
        "Sclerosing Epithelioid Fibrosarcoma",
        "Malignant Tenosynovial Giant Cell Tumor of Soft Tissue",
        "Epithelioid Hemangioendothelioma",
        "Glomus Tumor",
        "Inflammatory Leiomyosarcoma",
        "Leiomyosarcoma",
        "Ossifying Fibromyxoid Tumor, Malignant",
        "Myoepithelioma",
        "Synovial Sarcoma",
        "Epithelioid Sarcoma",
        "Perineurioma, Malignant",
        "Clear Cell Sarcoma",
        "Extraskeletal Myxoid Chondrosarcoma",
        "Granular Cell Tumor, Malignant",
        "Melanotic Malignant Nerve Sheath Tumor",
        "Malignant Peripheral Nerve Sheath Tumor",
        "Perivascular Epithelioid Tumor, Malignant",
        "Intimal Sarcoma",
        "Myoepithelial Carcinoma",
        "Undifferentiated Sarcoma",
        "Pleomorphic Sarcoma, Undifferentiated",
        "Round Cell Sarcoma, Undifferentiated",
        "NTRK-Rearranged Spindle Cell Neoplasm",
        "Phosphaturic Mesenchymal Tumor, Malignant",
        "Round Cell Sarcoma",
        "Well Differentiated Liposarcoma",
        "Giant Cell Tumor of Soft Parts NOS",
        "Low Grade Myofibroblastic Sarcoma",
        "Dermatofibrosarcoma Protuberans, Fibrosarcomatous"
      ],
      "interventions": [
        {
          "name": "Surgical resection",
          "type": "PROCEDURE"
        },
        {
          "name": "Proton beam radiation therapy",
          "type": "RADIATION"
        },
        {
          "name": "Pazopanib",
          "type": "DRUG"
        },
        {
          "name": "Ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin",
          "type": "DRUG"
        },
        {
          "name": "Selinexor",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION",
        "DRUG"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "Up to 30 Years"
      },
      "enrollment_count": 139,
      "start_date": "2024-03-27",
      "completion_date": "2037-06",
      "has_results": false,
      "last_update_posted_date": "2026-08-03",
      "last_synced_at": "2026-09-04T15:50:13.285Z",
      "location_count": 7,
      "location_summary": "Atlanta, Georgia • Chicago, Illinois • Baton Rouge, Louisiana + 4 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06239272"
    },
    {
      "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": "2026-09-04T15:50:13.285Z",
      "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": "NCT00562380",
      "title": "AMG-479 in Treating Patients With Advanced Solid Tumors or Non-Hodgkin Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Lymphoma",
        "Prostate Cancer",
        "Sarcoma",
        "Small Intestine Cancer",
        "Unspecified Adult Solid Tumor, Protocol Specific"
      ],
      "interventions": [
        {
          "name": "ganitumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        },
        {
          "name": "biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Amgen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 64,
      "start_date": "2005-10",
      "completion_date": "2010-06",
      "has_results": false,
      "last_update_posted_date": "2013-07-18",
      "last_synced_at": "2026-09-04T15:50:13.285Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00562380"
    }
  ]
}