{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers&page=15",
    "query": {
      "condition": "Biological Markers",
      "page": 15
    },
    "page_size": 10
  },
  "pagination": {
    "page": 15,
    "page_size": 10,
    "total_count": 3308,
    "total_pages": 331,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers&page=16&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers&page=14&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-15T13:03:22.792Z",
  "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": "NCT00501280",
      "title": "Genetic Susceptibility in Migrant Farmworker Children",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Epidemiology"
      ],
      "interventions": [
        {
          "name": "Interview",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "5 Years to 18 Years"
      },
      "enrollment_count": 768,
      "start_date": "2004-06",
      "completion_date": "2013-02",
      "has_results": false,
      "last_update_posted_date": "2013-04-04",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00501280"
    },
    {
      "nct_id": "NCT03142321",
      "title": "Defining Predictors of RT Response to Vedolizumab in IBD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Crohn Disease of Small Intestine"
      ],
      "interventions": [
        {
          "name": "Vedolizumab 300 MG Injection [Entyvio]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2018-06-08",
      "completion_date": "2024-10-28",
      "has_results": true,
      "last_update_posted_date": "2025-09-17",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03142321"
    },
    {
      "nct_id": "NCT02780414",
      "title": "Collection of Samples From Pregnant Women for the Evaluation of Preeclampsia (Pre-E) Biomarkers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Preeclampsia",
        "Hypertension",
        "Proteinuria",
        "Thrombocytopenia",
        "Renal Insufficiency",
        "Impaired Liver Function",
        "Pulmonary Edema"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Progenity, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 1730,
      "start_date": "2016-01",
      "completion_date": "2020-10-23",
      "has_results": false,
      "last_update_posted_date": "2022-03-11",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 20,
      "location_summary": "Birmingham, Alabama • Aurora, Colorado • New Haven, Connecticut + 17 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02780414"
    },
    {
      "nct_id": "NCT03727087",
      "title": "Blood Sample Collection to Evaluate Biomarkers in Subjects With Untreated Melanoma",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Melanoma"
      ],
      "interventions": [
        {
          "name": "Blood Sample Collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Exact Sciences Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 348,
      "start_date": "2019-01-10",
      "completion_date": "2020-03-24",
      "has_results": false,
      "last_update_posted_date": "2021-02-10",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 36,
      "location_summary": "Little Rock, Arkansas • Laguna Hills, California • Palm Springs, California + 32 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Palm Springs",
          "state": "California"
        },
        {
          "city": "Van Nuys",
          "state": "California"
        },
        {
          "city": "Middletown",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03727087"
    },
    {
      "nct_id": "NCT01237093",
      "title": "Developing Biomarkers of Dietary Intake",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Diet Therapy",
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "1. Meat, no fish or soda",
          "type": "OTHER"
        },
        {
          "name": "2. Meat and soda, no fish",
          "type": "OTHER"
        },
        {
          "name": "3. Meat and fish, no soda",
          "type": "OTHER"
        },
        {
          "name": "4. Meat and fish and soda",
          "type": "OTHER"
        },
        {
          "name": "5. Fish, no meat or soda",
          "type": "OTHER"
        },
        {
          "name": "6. Fish and soda, no meat",
          "type": "OTHER"
        },
        {
          "name": "7. No meat, fish or soda",
          "type": "OTHER"
        },
        {
          "name": "8. Soda, no meat or fish",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 59,
      "start_date": "2010-10-24",
      "completion_date": "2020-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-10-08",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01237093"
    },
    {
      "nct_id": "NCT04841525",
      "title": "Autism Biomarker Consortium for Clinical Trials (ABC-CT): Follow-up Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Autism Spectrum Disorder"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Years to 11 Years"
      },
      "enrollment_count": 265,
      "start_date": "2021-04-09",
      "completion_date": "2022-08-11",
      "has_results": false,
      "last_update_posted_date": "2023-04-05",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04841525"
    },
    {
      "nct_id": "NCT03633318",
      "title": "Establishing Muscle Impedance Parameters With Electrical Impedance Myography",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "IBM",
        "Inclusion Body Myositis"
      ],
      "interventions": [
        {
          "name": "electrical impedance myography (EIM)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "46 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "46 Years and older"
      },
      "enrollment_count": 31,
      "start_date": "2018-06-19",
      "completion_date": "2019-06-30",
      "has_results": false,
      "last_update_posted_date": "2020-08-11",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03633318"
    },
    {
      "nct_id": "NCT03762915",
      "title": "Scaling and Root Planing (SRP) With and Without Minocycline HCl Microspheres, 1 mg",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "SRP",
        "Minocycline HCl Microspheres",
        "Biomarkers"
      ],
      "interventions": [
        {
          "name": "minocycline HCl microspheres",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 70,
      "start_date": "2019-05-20",
      "completion_date": "2022-04-01",
      "has_results": true,
      "last_update_posted_date": "2025-01-28",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03762915"
    },
    {
      "nct_id": "NCT03616717",
      "title": "Modafinil Effects on EEG Biomarkers of Reward and Motivation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Healthy Adults"
      ],
      "interventions": [
        {
          "name": "Modafinil",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 23,
      "start_date": "2018-10-16",
      "completion_date": "2021-09-30",
      "has_results": false,
      "last_update_posted_date": "2022-04-06",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03616717"
    },
    {
      "nct_id": "NCT01873976",
      "title": "Cardiac Biomarkers in Pediatric Cardiomyopathy (PCM Biomarkers)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Dilated Cardiomyopathy",
        "Hypertrophic Cardiomyopathy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Wayne State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "Up to 20 Years"
      },
      "enrollment_count": 288,
      "start_date": "2013-06",
      "completion_date": "2019-06",
      "has_results": false,
      "last_update_posted_date": "2026-08-19",
      "last_synced_at": "2026-11-15T13:03:22.792Z",
      "location_count": 12,
      "location_summary": "Aurora, Colorado • Chicago, Illinois • Boston, Massachusetts + 9 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01873976"
    }
  ]
}