{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers",
    "query": {
      "condition": "Biological Markers"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 3223,
    "total_pages": 323,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-22T14:09:21.288Z",
  "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": "NCT04993742",
      "title": "Effects of Pregnancy-Specific Anxiety on Placental Inflammatory and Oxidative Stress Response and Birth Outcomes",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Placental Dysfunction",
        "Prenatal Stress"
      ],
      "interventions": [
        {
          "name": "MOMS Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Henry M. Jackson Foundation for the Advancement of Military Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 150,
      "start_date": "2019-11-26",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-12",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04993742"
    },
    {
      "nct_id": "NCT06319027",
      "title": "Identifying Findings on Brain Scans That Could Help Make Better Predictions About Brain Cancer Progression, The GABLE Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Glioblastoma, IDH-Wildtype"
      ],
      "interventions": [
        {
          "name": "Dynamic Susceptibility Contrast-Enhanced Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Fluciclovine F18",
          "type": "OTHER"
        },
        {
          "name": "Gadolinium-Chelate",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Spectroscopy",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "ECOG-ACRIN Cancer Research Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2024-04-11",
      "completion_date": "2027-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-18",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 12,
      "location_summary": "Los Angeles, California • Jacksonville, Florida • Tampa, Florida + 8 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06319027"
    },
    {
      "nct_id": "NCT04359186",
      "title": "SCOPE Analytic Treatment Interruption Protocol",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV/AIDS"
      ],
      "interventions": [
        {
          "name": "Treatment Interruption Arm",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2020-10-15",
      "completion_date": "2028-06",
      "has_results": false,
      "last_update_posted_date": "2026-01-23",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04359186"
    },
    {
      "nct_id": "NCT06320717",
      "title": "AI Derived Biomarker to Select Neoadjuvant Treatment for Borderline Resectable Pancreatic Ductal Adenocarcinoma",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pancreatic Ductal Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Blood sample",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Roswell Park 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": 100,
      "start_date": "2024-01-02",
      "completion_date": "2026-07-02",
      "has_results": false,
      "last_update_posted_date": "2026-04-30",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 2,
      "location_summary": "Buffalo, New York • West Islip, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        },
        {
          "city": "West Islip",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06320717"
    },
    {
      "nct_id": "NCT05917522",
      "title": "Assessment of Biomarker-Guided CNI Substitution In Kidney Transplantation",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kidney Transplant"
      ],
      "interventions": [
        {
          "name": "Abatacept",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Standard of Care at US Transplant Centers",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 800,
      "start_date": "2023-12-07",
      "completion_date": "2029-07",
      "has_results": false,
      "last_update_posted_date": "2026-03-23",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 15,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • New Haven, Connecticut + 11 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05917522"
    },
    {
      "nct_id": "NCT04670627",
      "title": "Biomarkers in Nasal Samples of Seasonal Allergic Rhinitics",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Seasonal Allergic Rhinitis",
        "Rhinovirus"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 92,
      "start_date": "2021-03-22",
      "completion_date": "2023-04-27",
      "has_results": false,
      "last_update_posted_date": "2023-05-17",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04670627"
    },
    {
      "nct_id": "NCT07011082",
      "title": "Hair Biomarkers Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Stress preventative measures",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "24 Months",
        "sex": "ALL",
        "summary": "6 Months to 24 Months"
      },
      "enrollment_count": 600,
      "start_date": "2024-11-18",
      "completion_date": "2029-12",
      "has_results": false,
      "last_update_posted_date": "2025-06-24",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07011082"
    },
    {
      "nct_id": "NCT05437588",
      "title": "Neural-Derived Plasma Exosomal MicroRNAs As Promising Novel Biomarkers for Suicidality and Treatment Outcome in Adolescents",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Major Depressive Disorder",
        "Suicidal Ideas",
        "Suicide, Attempted",
        "MDD",
        "Depression",
        "Depression, Teen",
        "Depression and Suicide",
        "Depression in Adolescence",
        "Suicide"
      ],
      "interventions": [
        {
          "name": "Genetic testing",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "24 Years",
        "sex": "ALL",
        "summary": "10 Years to 24 Years"
      },
      "enrollment_count": 240,
      "start_date": "2022-10-01",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 2,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05437588"
    },
    {
      "nct_id": "NCT03122483",
      "title": "Use of Blood Biomarkers and Biomarker Index to Aid in the Diagnosis of Obstructive Sleep Apnea (OSA)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obstructive Sleep Apnea"
      ],
      "interventions": [
        {
          "name": "blood biomarker",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Beckman Coulter, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "MALE",
        "summary": "18 Years to 70 Years · Male only"
      },
      "enrollment_count": 250,
      "start_date": "2016-01",
      "completion_date": "2017-07-14",
      "has_results": false,
      "last_update_posted_date": "2017-08-18",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 3,
      "location_summary": "Irvine, California • Boston, Massachusetts • Columbia, South Carolina",
      "locations": [
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Columbia",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03122483"
    },
    {
      "nct_id": "NCT02071056",
      "title": "Circulating Tumor DNA in Cerebrospinal Fluid as an Early Biomarker of Leptomeningeal Metastasis (LM)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Leptomeningeal Metastasis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Dartmouth-Hitchcock 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": 5,
      "start_date": "2014-05",
      "completion_date": "2015-11-25",
      "has_results": false,
      "last_update_posted_date": "2020-08-18",
      "last_synced_at": "2026-07-22T14:09:21.288Z",
      "location_count": 1,
      "location_summary": "Lebanon, New Hampshire",
      "locations": [
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02071056"
    }
  ]
}