{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retroperitoneal+Neoplasms&page=2",
    "query": {
      "condition": "Retroperitoneal Neoplasms",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Retroperitoneal+Neoplasms&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-11T01:27:33.074Z",
  "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": "NCT06025747",
      "title": "Evaluation of Abemaciclib and Radiation Therapy Before Surgery for the Treatment of High-Risk Adipocytic Retroperitoneal Sarcoma",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Retroperitoneal Sarcoma",
        "Liposarcoma",
        "Dedifferentiated Liposarcoma"
      ],
      "interventions": [
        {
          "name": "Abemaciclib",
          "type": "DRUG"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Therapeutic Surgical Procedure",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2025-03-19",
      "completion_date": "2029-03-03",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06025747"
    },
    {
      "nct_id": "NCT00017160",
      "title": "Combination Chemotherapy, Radiation Therapy, and Surgery in Treating Patients With Primary or Recurrent Sarcoma",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Stage III Adult Soft Tissue Sarcoma",
        "Recurrent Adult Soft Tissue Sarcoma",
        "Stage IVA Adult Soft Tissue Sarcoma",
        "Stage IIB Adult Soft Tissue Sarcoma",
        "Stage IIC Adult Soft Tissue Sarcoma"
      ],
      "interventions": [
        {
          "name": "doxorubicin",
          "type": "DRUG"
        },
        {
          "name": "filgrastim",
          "type": "DRUG"
        },
        {
          "name": "ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "biological response modifier therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "brachytherapy",
          "type": "PROCEDURE"
        },
        {
          "name": "chemotherapy",
          "type": "PROCEDURE"
        },
        {
          "name": "colony-stimulating factor therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "cytokine therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "intraoperative radiotherapy",
          "type": "PROCEDURE"
        },
        {
          "name": "radiation therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Radiation Therapy Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 0,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-06-27",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 216,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 165 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00017160"
    },
    {
      "nct_id": "NCT06436846",
      "title": "Genomic Risk in Retroperitoneal Sarcoma",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Retroperitoneal Liposarcoma",
        "Soft Tissue Sarcoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen sample collection during standard-of-care surgery",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Fox Chase Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2022-03-07",
      "completion_date": "2027-08-01",
      "has_results": false,
      "last_update_posted_date": "2024-05-31",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06436846"
    },
    {
      "nct_id": "NCT03508570",
      "title": "Nivolumab With or Without Ipilimumab in Treating Patients With Recurrent or High Grade Gynecologic Cancer With Metastatic Peritoneal Carcinomatosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Malignant Peritoneal Neoplasm",
        "Malignant Retroperitoneal Neoplasm",
        "Metastatic Cervical Carcinoma",
        "Metastatic Endometrial Carcinoma",
        "Metastatic Fallopian Tube Carcinoma",
        "Metastatic Malignant Female Reproductive System Neoplasm",
        "Metastatic Ovarian Carcinoma",
        "Metastatic Primary Peritoneal Carcinoma",
        "Peritoneal Carcinomatosis",
        "Platinum-Refractory Fallopian Tube Carcinoma",
        "Platinum-Refractory Malignant Female Reproductive System Neoplasm",
        "Platinum-Refractory Ovarian Carcinoma",
        "Platinum-Refractory Primary Peritoneal Carcinoma",
        "Platinum-Resistant Fallopian Tube Carcinoma",
        "Platinum-Resistant Malignant Female Reproductive System Neoplasm",
        "Platinum-Resistant Ovarian Carcinoma",
        "Platinum-Resistant Primary Peritoneal Carcinoma",
        "Recurrent Cervical Carcinoma",
        "Recurrent Endometrial Carcinoma",
        "Recurrent Fallopian Tube Carcinoma",
        "Recurrent Malignant Female Reproductive System Neoplasm",
        "Recurrent Ovarian Carcinoma",
        "Recurrent Primary Peritoneal Carcinoma",
        "Stage IV Fallopian Tube Cancer AJCC v8",
        "Stage IV Ovarian Cancer AJCC v8",
        "Stage IV Primary Peritoneal Cancer AJCC v8",
        "Stage IVA Fallopian Tube Cancer AJCC v8",
        "Stage IVA Ovarian Cancer AJCC v8",
        "Stage IVA Primary Peritoneal Cancer AJCC v8",
        "Stage IVB Cervical Cancer AJCC v8",
        "Stage IVB Fallopian Tube Cancer AJCC v8",
        "Stage IVB Ovarian Cancer AJCC v8",
        "Stage IVB Primary Peritoneal Cancer AJCC v8",
        "Stage IVB Uterine Corpus Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Ipilimumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pharmacokinetic Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "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": 26,
      "start_date": "2018-09-21",
      "completion_date": "2024-11-11",
      "has_results": false,
      "last_update_posted_date": "2025-05-22",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03508570"
    },
    {
      "nct_id": "NCT00091351",
      "title": "Surgery With or Without Radiation Therapy in Treating Patients With Primary Soft Tissue Sarcoma of the Retroperitoneum or Pelvis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 370,
      "start_date": "2004-08",
      "completion_date": "2006-02",
      "has_results": false,
      "last_update_posted_date": "2016-07-06",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 55,
      "location_summary": "Little Rock, Arkansas • Duarte, California • Aurora, Colorado + 42 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00091351"
    },
    {
      "nct_id": "NCT04033081",
      "title": "Registry of Sarcoma Patients Treated With Permanently Implantable LDR CivaSheet®",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "CivaSheet",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CivaTech Oncology",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "2020-04-30",
      "completion_date": "2030-04",
      "has_results": false,
      "last_update_posted_date": "2026-03-23",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04033081"
    },
    {
      "nct_id": "NCT00436657",
      "title": "Continuous Hyperthermic Peritoneal Perfusion (CHPP) With Cisplatin for Children With Peritoneal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Peritoneal Neoplasms",
        "Retroperitoneal Neoplasms",
        "Gastrointestinal Neoplasms",
        "Adenocarcinoma",
        "Neuroblastoma",
        "Ovarian Neoplasms",
        "Sarcoma",
        "Adrenocortical Carcinoma",
        "Wilms Tumor",
        "Rhabdomyosarcoma",
        "Desmoplastic Small Round Cell Tumor"
      ],
      "interventions": [
        {
          "name": "CHPP of Cisplatin",
          "type": "DRUG"
        },
        {
          "name": "Abdominal Surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "3 Years to 18 Years"
      },
      "enrollment_count": 10,
      "start_date": "2007-02",
      "completion_date": "2011-04",
      "has_results": false,
      "last_update_posted_date": "2012-04-02",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00436657"
    },
    {
      "nct_id": "NCT07117032",
      "title": "Simulation-Free Celiac Plexus Pain Ablation Using Stereotactic Body Radiotherapy (SBRT) in Participants With Cancer-Related Celiac Pain",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pancreatic Cancer",
        "Retroperitoneal Pain Syndrome"
      ],
      "interventions": [
        {
          "name": "Simulation-free workflow",
          "type": "OTHER"
        },
        {
          "name": "Celiac plexus SBRT",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "OTHER",
        "RADIATION"
      ],
      "sponsor": "Case Comprehensive 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": 5,
      "start_date": "2026-05-12",
      "completion_date": "2027-02",
      "has_results": false,
      "last_update_posted_date": "2026-05-29",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07117032"
    },
    {
      "nct_id": "NCT03426865",
      "title": "Role of Axumin PET Scan in Germ Cell Tumor",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Testis Cancer",
        "Germ Cell Tumor",
        "Testicular Cancer",
        "Germ Cell Tumor of Testis",
        "Germ Cell Tumor, Testicular, Childhood",
        "Testicular Neoplasms",
        "Testicular Germ Cell Tumor",
        "Testicular Yolk Sac Tumor",
        "Testicular Choriocarcinoma",
        "Testicular Diseases",
        "Germ Cell Cancer Metastatic",
        "Germ Cell Neoplasm of Retroperitoneum",
        "Germ Cell Cancer, Nos"
      ],
      "interventions": [
        {
          "name": "Axumin PET scan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 10,
      "start_date": "2018-03-01",
      "completion_date": "2023-06-01",
      "has_results": false,
      "last_update_posted_date": "2025-08-11",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03426865"
    },
    {
      "nct_id": "NCT03283423",
      "title": "Image-guided Lymphadanectomy in AMIGO",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lymphadenopathy Retroperitoneal",
        "Lymphoma"
      ],
      "interventions": [
        {
          "name": "Image-guided Lymphadanectomy in AMIGO",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2018-10-25",
      "completion_date": "2020-03-20",
      "has_results": false,
      "last_update_posted_date": "2026-01-09",
      "last_synced_at": "2026-06-11T01:27:33.074Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03283423"
    }
  ]
}