{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers&page=19",
    "query": {
      "condition": "Biological Markers",
      "page": 19
    },
    "page_size": 10
  },
  "pagination": {
    "page": 19,
    "page_size": 10,
    "total_count": 3308,
    "total_pages": 331,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers&page=20&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Biological+Markers&page=18&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-15T14:11:18.577Z",
  "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": "NCT05019625",
      "title": "Biomarker Development for Muscular Dystrophies",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Myotonic Dystrophy",
        "Duchenne Muscular Dystrophy",
        "Becker Muscular Dystrophy",
        "Facioscapulohumeral Muscular Dystrophy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "5 Years and older"
      },
      "enrollment_count": 465,
      "start_date": "2015-02-20",
      "completion_date": "2028-06",
      "has_results": false,
      "last_update_posted_date": "2026-10-29",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 5,
      "location_summary": "Boston, Massachusetts • Winston-Salem, North Carolina • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05019625"
    },
    {
      "nct_id": "NCT04302025",
      "title": "A Study of Multiple Therapies in Biomarker-selected Participants With Resectable Stages IB-III Non-small Cell Lung Cancer (NSCLC)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Non-small Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "Alectinib",
          "type": "DRUG"
        },
        {
          "name": "Entrectinib",
          "type": "DRUG"
        },
        {
          "name": "Vemurafenib",
          "type": "DRUG"
        },
        {
          "name": "Cobimetinib",
          "type": "DRUG"
        },
        {
          "name": "Pralsetinib",
          "type": "DRUG"
        },
        {
          "name": "Atezolizumab",
          "type": "DRUG"
        },
        {
          "name": "SBRT",
          "type": "DRUG"
        },
        {
          "name": "Resection",
          "type": "PROCEDURE"
        },
        {
          "name": "Chemotherapy",
          "type": "DRUG"
        },
        {
          "name": "Divarasib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Genentech, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 99,
      "start_date": "2020-11-06",
      "completion_date": "2030-05-30",
      "has_results": false,
      "last_update_posted_date": "2026-11-10",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 24,
      "location_summary": "Los Angeles, California • Orange, California • Sacramento, California + 19 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04302025"
    },
    {
      "nct_id": "NCT03968874",
      "title": "Improving Sleep, Sleep-related Outcomes, and Biomarkers in Veterans",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "Light box therapy",
          "type": "DEVICE"
        },
        {
          "name": "Negative Ion Generator",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Portland VA Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "88 Years",
        "sex": "ALL",
        "summary": "18 Years to 88 Years"
      },
      "enrollment_count": 300,
      "start_date": "2019-08-01",
      "completion_date": "2027-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-17",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03968874"
    },
    {
      "nct_id": "NCT04613518",
      "title": "A Study of the Safety, Efficacy, and Biomarker Response of BMS-986165 in Participants With Moderate to Severe Ulcerative Colitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Colitis, Ulcerative"
      ],
      "interventions": [
        {
          "name": "BMS-986165",
          "type": "DRUG"
        },
        {
          "name": "Placebo Comparator",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 38,
      "start_date": "2021-03-15",
      "completion_date": "2023-11-29",
      "has_results": true,
      "last_update_posted_date": "2024-07-12",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 10,
      "location_summary": "San Diego, California • Arlington Heights, Illinois • Shreveport, Louisiana + 7 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Arlington Heights",
          "state": "Illinois"
        },
        {
          "city": "Shreveport",
          "state": "Louisiana"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04613518"
    },
    {
      "nct_id": "NCT01984359",
      "title": "HPV Serum DNA Levels Predicting Outcome in p16+ Squamous Cell Head and Neck Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Subjects With p16 Positive/HPV Positive Squamous Cell Carcinomas of the Oropharynx"
      ],
      "interventions": [
        {
          "name": "Obtaining Human tissue",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2013-05",
      "completion_date": "2018-05-24",
      "has_results": false,
      "last_update_posted_date": "2020-04-10",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01984359"
    },
    {
      "nct_id": "NCT04082468",
      "title": "VALIDATE: Factor VIII Trending for MS Relapse",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Blood sample collection for coagulation profile",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "St. Joseph's Hospital and Medical Center, Phoenix",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 0,
      "start_date": "2019-08-13",
      "completion_date": "2022-03-01",
      "has_results": false,
      "last_update_posted_date": "2021-09-21",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04082468"
    },
    {
      "nct_id": "NCT00761020",
      "title": "Merozoite Surface Protein 1 Antibody Response in Asymptomatic Human Malaria Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Malaria"
      ],
      "interventions": [
        {
          "name": "Mefloquine",
          "type": "DRUG"
        },
        {
          "name": "Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "U.S. Army Medical Research and Development Command",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 31,
      "start_date": "2008-09",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2021-04-19",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 1,
      "location_summary": "Silver Spring, Maryland",
      "locations": [
        {
          "city": "Silver Spring",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00761020"
    },
    {
      "nct_id": "NCT06365723",
      "title": "Effects of Walking in Greenspace and the Built Environment in Adults With Prediabetes: A Randomized Crossover Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PreDiabetes",
        "Heart Rate Variability (HRV)",
        "Stress and Anxiety",
        "Stress Biomarkers"
      ],
      "interventions": [
        {
          "name": "Nature-based Walking",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Built-environment/Commercial Walking",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "25 Years to 64 Years"
      },
      "enrollment_count": 216,
      "start_date": "2024-06-06",
      "completion_date": "2028-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-18",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 3,
      "location_summary": "Lake Forest, Illinois • Winfield, Illinois • Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Lake Forest",
          "state": "Illinois"
        },
        {
          "city": "Winfield",
          "state": "Illinois"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06365723"
    },
    {
      "nct_id": "NCT02298491",
      "title": "Treatment of CNS Sarcoidosis With H.P. Acthar Gel",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "CNS Sarcoidosis"
      ],
      "interventions": [
        {
          "name": "H.P. Acthar Gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 4,
      "start_date": "2016-05",
      "completion_date": "2020-11",
      "has_results": true,
      "last_update_posted_date": "2026-04-17",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02298491"
    },
    {
      "nct_id": "NCT00345813",
      "title": "Soy Supplements in Treating Patients Undergoing Surgery for Localized Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "soy isoflavones",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "soy protein isolate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "MALE",
        "summary": "18 Years to 120 Years · Male only"
      },
      "enrollment_count": 62,
      "start_date": "2003-10",
      "completion_date": "2006-07",
      "has_results": false,
      "last_update_posted_date": "2018-08-10",
      "last_synced_at": "2026-11-15T14:11:18.577Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00345813"
    }
  ]
}