{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+sample+collection+for+biomarkers",
    "query": {
      "intervention": "Blood sample collection for biomarkers"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 437,
    "total_pages": 44,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+sample+collection+for+biomarkers&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T16:13:24.536Z",
  "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": "NCT01271283",
      "title": "Lenalidomide in Treating Patients With High-Risk Chronic Lymphocytic Leukemia",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Lymphocytic Leukemia",
        "Stage III Chronic Lymphocytic Leukemia",
        "Stage IV Chronic Lymphocytic Leukemia"
      ],
      "interventions": [
        {
          "name": "Diagnostic Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Lenalidomide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "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": 0,
      "start_date": "2010-12",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2015-06-04",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01271283"
    },
    {
      "nct_id": "NCT00460356",
      "title": "Glycoprotein and Glycan in Tissue and Blood Samples of Patients With Stage IB-IVA Cervical Cancer Undergoing Surgery to Remove Pelvic and Abdominal Lymph Nodes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cervical Adenocarcinoma",
        "Cervical Adenosquamous Carcinoma",
        "Cervical Small Cell Carcinoma",
        "Cervical Squamous Cell Carcinoma, Not Otherwise Specified",
        "Stage IB Cervical Cancer",
        "Stage IIA Cervical Cancer",
        "Stage IIB Cervical Cancer",
        "Stage III Cervical Cancer",
        "Stage IVA Cervical Cancer"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Lymphadenectomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Gynecologic Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 159,
      "start_date": "2007-04-02",
      "completion_date": "2016-07-16",
      "has_results": false,
      "last_update_posted_date": "2017-08-24",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 18,
      "location_summary": "Orange, California • Sylmar, California • Augusta, Georgia + 12 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Sylmar",
          "state": "California"
        },
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00460356"
    },
    {
      "nct_id": "NCT03281902",
      "title": "Genetic Analysis in Blood and Tumor Samples From Patients With Advanced or Metastatic Estrogen Receptor Positive and HER2 Negative Breast Cancer Receiving Palbociclib and Endocrine Therapy",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Advanced Breast Carcinoma",
        "Locally Advanced Breast Carcinoma",
        "Metastatic Breast Carcinoma",
        "Recurrent Breast Carcinoma",
        "Stage III Breast Cancer AJCC v7",
        "Stage IIIA Breast Cancer AJCC v7",
        "Stage IIIB Breast Cancer AJCC v7",
        "Stage IIIC Breast Cancer AJCC v7",
        "Stage IV Breast Cancer AJCC v6 and v7"
      ],
      "interventions": [
        {
          "name": "Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "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": 68,
      "start_date": "2017-11-13",
      "completion_date": "2028-03-04",
      "has_results": false,
      "last_update_posted_date": "2026-06-09",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 3,
      "location_summary": "Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03281902"
    },
    {
      "nct_id": "NCT06330805",
      "title": "Effects of Relugolix vs Leuprolide on Cardiac Function in Patients With Prostate Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Adenocarcinoma",
        "Stage IIB Prostate Cancer AJCC v8",
        "Stage IIC Prostate Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Contrast Agent",
          "type": "OTHER"
        },
        {
          "name": "Leuprolide",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Physical Performance Testing",
          "type": "OTHER"
        },
        {
          "name": "Relugolix",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Ohio State University Comprehensive Cancer 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": 70,
      "start_date": "2024-08-12",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-09",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06330805"
    },
    {
      "nct_id": "NCT00482352",
      "title": "Risk-Group Classification of Patients With Newly Diagnosed Acute Lymphoblastic Leukemia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Untreated Adult Acute Lymphoblastic Leukemia",
        "Untreated Childhood Acute Lymphoblastic Leukemia"
      ],
      "interventions": [
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "1 Year to 30 Years"
      },
      "enrollment_count": 11196,
      "start_date": "2003-12",
      "completion_date": "2023-06-30",
      "has_results": false,
      "last_update_posted_date": "2023-08-03",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 176,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 141 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00482352"
    },
    {
      "nct_id": "NCT04165564",
      "title": "DECAMP 1 PLUS: Prediction of Lung Cancer Using Noninvasive Biomarkers",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Disease"
      ],
      "interventions": [
        {
          "name": "Institutional standard of care",
          "type": "OTHER"
        },
        {
          "name": "Biosamples of airway and blood",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Boston University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "46 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "46 Years and older"
      },
      "enrollment_count": 85,
      "start_date": "2020-08-24",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-04-01",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 19,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Diego, California + 13 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04165564"
    },
    {
      "nct_id": "NCT01227018",
      "title": "PhII Study STA-9090 as Second or Third-Line Therapy for Metastatic Pancreas Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adenocarcinoma of the Pancreas",
        "Recurrent Pancreatic Cancer",
        "Stage IV Pancreatic Cancer"
      ],
      "interventions": [
        {
          "name": "STA-9090",
          "type": "DRUG"
        },
        {
          "name": "Radiologic imaging",
          "type": "RADIATION"
        },
        {
          "name": "blood draw",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Vanderbilt-Ingram 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": 15,
      "start_date": "2010-12",
      "completion_date": "2013-05",
      "has_results": true,
      "last_update_posted_date": "2014-07-23",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 2,
      "location_summary": "Memphis, Tennessee • Nashville, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01227018"
    },
    {
      "nct_id": "NCT00507702",
      "title": "Identification of Key Blood Molecular Markers for Immunotherapy",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Squamous Cell Carcinoma",
        "Adenocarcinoma",
        "Neoplasms"
      ],
      "interventions": [
        {
          "name": "phlebotomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 191,
      "start_date": "2006-07-06",
      "completion_date": "2015-02-25",
      "has_results": false,
      "last_update_posted_date": "2019-04-18",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00507702"
    },
    {
      "nct_id": "NCT00516698",
      "title": "Changes in Breast Density and Blood Hormone Levels in Postmenopausal Women Receiving Anastrozole or Exemestane for Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "polymorphism analysis",
          "type": "GENETIC"
        },
        {
          "name": "high performance liquid chromatography",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "radiomammography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "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": 140,
      "start_date": "2007-09",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2016-07-13",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 180,
      "location_summary": "Augusta, Georgia • Aurora, Illinois • Bloomington, Illinois + 111 more",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Aurora",
          "state": "Illinois"
        },
        {
          "city": "Bloomington",
          "state": "Illinois"
        },
        {
          "city": "Canton",
          "state": "Illinois"
        },
        {
          "city": "Carthage",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00516698"
    },
    {
      "nct_id": "NCT04803084",
      "title": "Multiparametric MRI as a Non-Invasive Biomarker of the Tumor Microenviroment",
      "overall_status": "SUSPENDED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Triple-negative Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Tempus assay",
          "type": "OTHER"
        },
        {
          "name": "Advanced pathology 1",
          "type": "OTHER"
        },
        {
          "name": "Advanced pathology 2",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Laura Kennedy",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2021-08-09",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-08-19",
      "last_synced_at": "2026-09-29T16:13:24.536Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04803084"
    }
  ]
}