{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Rare+Malignant+Solid+Neoplasm",
    "query": {
      "condition": "Refractory Rare Malignant Solid Neoplasm"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T08:45:19.625Z",
  "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": "NCT03602079",
      "title": "Study of A166 in Patients With Relapsed/Refractory Cancers Expressing HER2 Antigen or Having Amplified HER2 Gene",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "HER2-positive Breast Cancer",
        "HER2 Gene Mutation",
        "HER-2 Gene Amplification",
        "HER2 Positive Gastric Cancer",
        "Salivary Gland Cancer",
        "Salivary Gland Tumor",
        "Salivary Gland Carcinoma",
        "Salivary Gland Neoplasms",
        "Lung Cancer",
        "Colo-rectal Cancer",
        "Rare Diseases",
        "Solid Tumor",
        "Recurrent Gastric Cancer",
        "Recurrent Colon Cancer",
        "Recurrent Breast Cancer",
        "Head and Neck Cancer",
        "Head and Neck Carcinoma",
        "Bladder Cancer",
        "Cervical Cancer",
        "Liver Cancer",
        "Bile Duct Cancer",
        "Urologic Cancer",
        "Pancreatic Cancer",
        "Prostate Cancer",
        "Recurrent Prostate Cancer",
        "Rectal Cancer",
        "Recurrent Ovarian Carcinoma",
        "Recurrent Renal Cell Cancer",
        "Rectal Cancer Stage II",
        "Rectal Cancer Stage I",
        "Rectal Cancer Stage III",
        "Skin Cancer",
        "Mouth Cancer",
        "Lip Cancer Stage I",
        "Tongue Cancer",
        "Breast Neoplasm Malignant Primary",
        "Larynx Cancer",
        "Tonsil Cancer",
        "Palate Cancer",
        "Mucoepidermoid Carcinoma",
        "Primary Peritoneal Carcinoma",
        "Mucinous Adenocarcinoma Gastric",
        "Mucinous Breast Cancer Recurrent",
        "Cholangiocarcinoma"
      ],
      "interventions": [
        {
          "name": "A166",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Klus Pharma Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2018-07-16",
      "completion_date": "2022-01-12",
      "has_results": false,
      "last_update_posted_date": "2023-08-03",
      "last_synced_at": "2026-05-22T08:45:19.625Z",
      "location_count": 10,
      "location_summary": "Sarasota, Florida • Boston, Massachusetts • Detroit, Michigan + 7 more",
      "locations": [
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Lake Success",
          "state": "New York"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03602079"
    },
    {
      "nct_id": "NCT03478462",
      "title": "Dose Escalation Study of CLR 131 in Pediatric Relapsed/Refractory Malignant Tumors Including Neuroblastoma and Sarcomas",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pediatric Solid Tumor",
        "Pediatric Lymphoma",
        "Pediatric Brain Tumor",
        "DIPG",
        "Neuroblastoma",
        "Ewing Sarcoma",
        "Rhabdomyosarcoma",
        "Osteosarcoma"
      ],
      "interventions": [
        {
          "name": "CLR 131",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cellectar Biosciences, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "2 Years to 25 Years"
      },
      "enrollment_count": 30,
      "start_date": "2019-04-30",
      "completion_date": "2027-02-25",
      "has_results": false,
      "last_update_posted_date": "2026-03-18",
      "last_synced_at": "2026-05-22T08:45:19.625Z",
      "location_count": 6,
      "location_summary": "Palo Alto, California • New York, New York • Chapel Hill, North Carolina + 3 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03478462"
    },
    {
      "nct_id": "NCT03739827",
      "title": "Natural History and Biospecimen Acquisition for Children and Adults With Rare Solid Tumors",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Malignant Solid Tumors",
        "Other Neoplasms Solid Tumors",
        "Pediatric Solid Tumor",
        "Refractory Solid Tumors",
        "Solid Tumor"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "4 Weeks",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Weeks and older"
      },
      "enrollment_count": 10000,
      "start_date": "2019-01-28",
      "completion_date": "2032-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-24",
      "last_synced_at": "2026-05-22T08:45:19.625Z",
      "location_count": 3,
      "location_summary": "Bethesda, Maryland • Portland, Oregon • Houston, Texas",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03739827"
    },
    {
      "nct_id": "NCT05715281",
      "title": "Testing the Combination of Anti-cancer Drugs Atezolizumab and Tiragolumab in People With Advanced Stage Rare Cancers, RARE3 Trial",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Advanced Rare Malignant Solid Neoplasm",
        "Rare Malignant Solid Neoplasm",
        "Refractory Rare Malignant Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Atezolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Tiragolumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE",
        "DRUG"
      ],
      "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": 12,
      "start_date": "2023-09-26",
      "completion_date": "2026-11-21",
      "has_results": false,
      "last_update_posted_date": "2025-11-25",
      "last_synced_at": "2026-05-22T08:45:19.625Z",
      "location_count": 3,
      "location_summary": "Bethesda, Maryland • Columbus, Ohio",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05715281"
    },
    {
      "nct_id": "NCT02867592",
      "title": "Cabozantinib-S-Malate in Treating Younger Patients With Recurrent, Refractory, or Newly Diagnosed Sarcomas, Wilms Tumor, or Other Rare Tumors",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adrenal Cortical Carcinoma",
        "Alveolar Soft Part Sarcoma",
        "Central Nervous System Neoplasm",
        "Childhood Clear Cell Sarcoma of Soft Tissue",
        "Clear Cell Sarcoma of Soft Tissue",
        "Ewing Sarcoma",
        "Hepatoblastoma",
        "Hepatocellular Carcinoma",
        "Osteosarcoma",
        "Recurrent Adrenal Cortical Carcinoma",
        "Recurrent Alveolar Soft Part Sarcoma",
        "Recurrent Clear Cell Sarcoma of Soft Tissue",
        "Recurrent Ewing Sarcoma",
        "Recurrent Hepatoblastoma",
        "Recurrent Hepatocellular Carcinoma",
        "Recurrent Kidney Wilms Tumor",
        "Recurrent Malignant Solid Neoplasm",
        "Recurrent Osteosarcoma",
        "Recurrent Primary Malignant Central Nervous System Neoplasm",
        "Recurrent Renal Cell Carcinoma",
        "Recurrent Rhabdomyosarcoma",
        "Recurrent Soft Tissue Sarcoma",
        "Recurrent Thyroid Gland Medullary Carcinoma",
        "Refractory Adrenal Cortical Carcinoma",
        "Refractory Alveolar Soft Part Sarcoma",
        "Refractory Clear Cell Sarcoma of Soft Tissue",
        "Refractory Ewing Sarcoma",
        "Refractory Hepatoblastoma",
        "Refractory Hepatocellular Carcinoma",
        "Refractory Malignant Solid Neoplasm",
        "Refractory Osteosarcoma",
        "Refractory Primary Central Nervous System Neoplasm",
        "Refractory Primary Malignant Central Nervous System Neoplasm",
        "Refractory Renal Cell Carcinoma",
        "Refractory Rhabdomyosarcoma",
        "Refractory Soft Tissue Sarcoma",
        "Refractory Thyroid Gland Medullary Carcinoma",
        "Refractory Wilms Tumor",
        "Renal Cell Carcinoma",
        "Rhabdomyosarcoma",
        "Soft Tissue Sarcoma",
        "Solid Neoplasm",
        "Thyroid Gland Medullary Carcinoma",
        "Wilms Tumor"
      ],
      "interventions": [
        {
          "name": "Cabozantinib",
          "type": "DRUG"
        },
        {
          "name": "Cabozantinib S-malate",
          "type": "DRUG"
        },
        {
          "name": "Pharmacological Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "2 Years to 30 Years"
      },
      "enrollment_count": 109,
      "start_date": "2017-05-18",
      "completion_date": "2026-06-27",
      "has_results": true,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-05-22T08:45:19.625Z",
      "location_count": 142,
      "location_summary": "Birmingham, Alabama • Anchorage, Alaska • Little Rock, Arkansas + 104 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Bellflower",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02867592"
    },
    {
      "nct_id": "NCT06303167",
      "title": "Testing AZD9291 as Potentially Targeted Treatment in Cancers With EGFR Genetic Changes (MATCH-Subprotocol E)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Advanced Lymphoma",
        "Advanced Malignant Solid Neoplasm",
        "Hematopoietic and Lymphoid Cell Neoplasm",
        "Refractory Lymphoma",
        "Refractory Malignant Solid Neoplasm",
        "Refractory Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Multigated Acquisition Scan",
          "type": "PROCEDURE"
        },
        {
          "name": "Osimertinib",
          "type": "DRUG"
        },
        {
          "name": "Radiologic Examination",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "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": 19,
      "start_date": "2016-01-08",
      "completion_date": "2027-01-15",
      "has_results": true,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-05-22T08:45:19.625Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06303167"
    }
  ]
}