{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=biological+samples",
    "query": {
      "intervention": "biological samples"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 533,
    "total_pages": 54,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=biological+samples&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T03:31:18.575Z",
  "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": "NCT04458922",
      "title": "Testing Atezolizumab in People 2-17 Years Old With Clear Cell Sarcoma or Advanced Chondrosarcoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Central Chondrosarcoma, Grade 2",
        "Central Chondrosarcoma, Grade 3",
        "Dedifferentiated Chondrosarcoma",
        "Metastatic Clear Cell Sarcoma of Soft Tissue",
        "Metastatic Primary Central Chondrosarcoma",
        "Unresectable Primary Central Chondrosarcoma"
      ],
      "interventions": [
        {
          "name": "Atezolizumab",
          "type": "DRUG"
        },
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2020-10-05",
      "completion_date": "2026-12-17",
      "has_results": true,
      "last_update_posted_date": "2026-07-31",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 14,
      "location_summary": "Los Angeles, California • Gainesville, Florida • Atlanta, Georgia + 7 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04458922"
    },
    {
      "nct_id": "NCT07136493",
      "title": "Circulating Tumor DNA Based Minimal Residual Disease Detection for Patients With Early-Stage Breast Cancer",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anatomic Stage I Breast Cancer AJCC v8",
        "Anatomic Stage II Breast Cancer AJCC v8",
        "Anatomic Stage III Breast Cancer AJCC v8",
        "Estrogen Receptor-Positive Breast Carcinoma",
        "HER2-Negative Breast Carcinoma",
        "HER2-Positive Breast Carcinoma",
        "Triple-Negative Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "City of Hope Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2026-05-12",
      "completion_date": "2026-06-16",
      "has_results": false,
      "last_update_posted_date": "2026-06-25",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 5,
      "location_summary": "Goodyear, Arizona • Duarte, California • Irvine, California + 2 more",
      "locations": [
        {
          "city": "Goodyear",
          "state": "Arizona"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Newnan",
          "state": "Georgia"
        },
        {
          "city": "Zion",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07136493"
    },
    {
      "nct_id": "NCT05828082",
      "title": "Testing the Effect of M1774 on Hard-to-Treat Refractory SPOP-mutant Prostate Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration-Resistant Prostate Carcinoma",
        "Metastatic Castration-Resistant Prostate Carcinoma",
        "Refractory Prostate Carcinoma",
        "Stage IVB Prostate Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Tuvusertib",
          "type": "DRUG"
        },
        {
          "name": "Ultrasound Imaging",
          "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": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2023-10-16",
      "completion_date": "2027-01-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-31",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 26,
      "location_summary": "Phoenix, Arizona • Orange, California • Aventura, Florida + 19 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Aventura",
          "state": "Florida"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Deerfield Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05828082"
    },
    {
      "nct_id": "NCT01052207",
      "title": "Pilot Study Assessing Oxidative Stress in Children",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adrenal Insufficiency",
        "Critical Illness"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "1 Day to 18 Years"
      },
      "enrollment_count": 102,
      "start_date": "2010-02",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2015-06-04",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01052207"
    },
    {
      "nct_id": "NCT03278925",
      "title": "Defined Green Tea Catechin Extract in Preventing Liver Cancer in Participants With Cirrhosis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cirrhosis"
      ],
      "interventions": [
        {
          "name": "Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Defined Green Tea Catechin Extract",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Pharmacological Study",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Ultrasound",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "OTHER"
      ],
      "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": 14,
      "start_date": "2018-08-09",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-08-02",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03278925"
    },
    {
      "nct_id": "NCT04652960",
      "title": "Duvelisib and Nivolumab for the Treatment of Stage IIB-IVB Mycosis Fungoides and Sezary Syndrome",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Stage IIB Mycosis Fungoides and Sezary Syndrome AJCC v8",
        "Stage III Mycosis Fungoides and Sezary Syndrome AJCC v8",
        "Stage IV Mycosis Fungoides and Sezary Syndrome AJCC v8"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Duvelisib",
          "type": "DRUG"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Punch Biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "BIOLOGICAL"
      ],
      "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": 38,
      "start_date": "2021-10-21",
      "completion_date": "2026-12-03",
      "has_results": false,
      "last_update_posted_date": "2026-07-31",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 17,
      "location_summary": "Phoenix, Arizona • Aurora, Colorado • Coral Gables, Florida + 12 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Deerfield Beach",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04652960"
    },
    {
      "nct_id": "NCT05625594",
      "title": "Intracerebroventricular Administration of CD19-CAR T Cells (CD19CAR-CD28-CD3zeta-EGFRt-expressing Tn/Mem T-lymphocytes) for the Treatment of Central Nervous System Lymphoma",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Central Nervous System Lymphoma"
      ],
      "interventions": [
        {
          "name": "Aspiration",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Catheterization",
          "type": "PROCEDURE"
        },
        {
          "name": "CD19CAR-CD28-CD3zeta-EGFRt-expressing Tn/mem T-lymphocytes",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Leukapheresis",
          "type": "PROCEDURE"
        },
        {
          "name": "Lumbar Puncture",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "City of Hope Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2023-06-29",
      "completion_date": "2028-05-22",
      "has_results": false,
      "last_update_posted_date": "2026-06-03",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 1,
      "location_summary": "Duarte, California",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05625594"
    },
    {
      "nct_id": "NCT04068194",
      "title": "Testing the Combination of New Anti-cancer Drug Peposertib With Avelumab and Radiation Therapy for Advanced/Metastatic Solid Tumors and Hepatobiliary Malignancies",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Locally Advanced Malignant Solid Neoplasm",
        "Locally Advanced Unresectable Cholangiocarcinoma",
        "Locally Advanced Unresectable Gallbladder Carcinoma",
        "Locally Advanced Unresectable Malignant Solid Neoplasm",
        "Metastatic Cholangiocarcinoma",
        "Metastatic Gallbladder Carcinoma",
        "Metastatic Malignant Solid Neoplasm",
        "Stage III Gallbladder Cancer AJCC v8",
        "Stage IV Gallbladder Cancer AJCC v8",
        "Unresectable Malignant Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Avelumab",
          "type": "DRUG"
        },
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Hypofractionated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Peposertib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "RADIATION"
      ],
      "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": 103,
      "start_date": "2020-04-07",
      "completion_date": "2027-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-21",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 46,
      "location_summary": "Duarte, California • Irvine, California • La Jolla, California + 34 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04068194"
    },
    {
      "nct_id": "NCT05941520",
      "title": "Acolbifene Versus Low Dose Tamoxifen for the Prevention of Breast Cancer in Premenopausal Women at High Risk for Development of Breast Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Atypical Hyperplasia",
        "Breast Carcinoma",
        "Breast Ductal Carcinoma In Situ",
        "Breast Lobular Carcinoma In Situ"
      ],
      "interventions": [
        {
          "name": "Acolbifene Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Mammography",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Random Periareolar Fine-Needle Aspiration",
          "type": "PROCEDURE"
        },
        {
          "name": "Tamoxifen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "35 Years and older · Female only"
      },
      "enrollment_count": 80,
      "start_date": "2024-10-10",
      "completion_date": "2028-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 4,
      "location_summary": "Duarte, California • Chicago, Illinois • Kansas City, Kansas + 1 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05941520"
    },
    {
      "nct_id": "NCT05045027",
      "title": "Simultaneous Multinuclear Metabolic MRI in Newly Diagnosed or Recurrent Glioma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Glioma",
        "Malignant Glioma",
        "Recurrent Glioma",
        "Recurrent Malignant Glioma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Diagnostic Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Jonsson Comprehensive 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": 36,
      "start_date": "2021-09-01",
      "completion_date": "2027-09-10",
      "has_results": false,
      "last_update_posted_date": "2025-11-14",
      "last_synced_at": "2026-09-06T03:31:18.575Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05045027"
    }
  ]
}