{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+-+there+is+no+intervention&page=3",
    "query": {
      "intervention": "Observational study - there is no intervention",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 104,
    "total_pages": 11,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+-+there+is+no+intervention&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+-+there+is+no+intervention&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T21:28:51.808Z",
  "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": "NCT06463704",
      "title": "General Pre-Trial Screening Protocol for Infectious Diseases Research",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "There is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Beth Israel Deaconess Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 250,
      "start_date": "2024-06-21",
      "completion_date": "2034-06",
      "has_results": false,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06463704"
    },
    {
      "nct_id": "NCT04491552",
      "title": "TruGraf® Long-term Clinical Outcomes Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kidney Transplant Rejection"
      ],
      "interventions": [
        {
          "name": "Patients monitored with TruGraf and TRAC testing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Transplant Genomics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2000,
      "start_date": "2020-09-09",
      "completion_date": "2023-11",
      "has_results": false,
      "last_update_posted_date": "2022-11-14",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 36,
      "location_summary": "Tucson, Arizona • Fresno, California • La Jolla, California + 28 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04491552"
    },
    {
      "nct_id": "NCT03534076",
      "title": "Predicting Sleep, Smoking, and Lung Health Disparities in African American Adults",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep",
        "Lung Diseases",
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Cohort Observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Temple University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "67 Years",
        "sex": "ALL",
        "summary": "40 Years to 67 Years"
      },
      "enrollment_count": 303,
      "start_date": "2018-06-01",
      "completion_date": "2023-11-30",
      "has_results": false,
      "last_update_posted_date": "2023-09-21",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03534076"
    },
    {
      "nct_id": "NCT04580589",
      "title": "DOAC ADRs Retrospective Study on Genetic Variations",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Drug-Related Side Effects and Adverse Reactions",
        "Treatment Failure"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Cipherome, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 210,
      "start_date": "2021-02-01",
      "completion_date": "2022-10-31",
      "has_results": false,
      "last_update_posted_date": "2023-02-16",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "Santa Clara, California",
      "locations": [
        {
          "city": "Santa Clara",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04580589"
    },
    {
      "nct_id": "NCT06034509",
      "title": "Cognitive and Vascular Functioning Following TBI",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Traumatic Brain Injury",
        "Cognitive Decline",
        "Vascular Dementia"
      ],
      "interventions": [
        {
          "name": "No intervention. This is an observational study.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Walter Reed National Military Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "74 Years",
        "sex": "ALL",
        "summary": "18 Years to 74 Years"
      },
      "enrollment_count": 300,
      "start_date": "2023-11-27",
      "completion_date": "2027-05",
      "has_results": false,
      "last_update_posted_date": "2025-09-26",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06034509"
    },
    {
      "nct_id": "NCT04892797",
      "title": "Understanding Immunology and Patient Outcomes of COVID-19 in Hospitalized Patients",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Covid-19+ observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2021-02-03",
      "completion_date": "2023-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-05-14",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04892797"
    },
    {
      "nct_id": "NCT01612936",
      "title": "T Cell Effector and Regulatory Mechanisms in Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Asthma",
        "Allergies"
      ],
      "interventions": [
        {
          "name": "Bronchoscopy, Segmental Allergen Challenge and Broncheoalveolar Lavage",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PET-CT imaging(13NN perfusion/ventilation, 18FDG inflammation, and CT imaging)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Andrew D. Luster, M.D.,Ph.D.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 168,
      "start_date": "2012-09",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2017-09-15",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01612936"
    },
    {
      "nct_id": "NCT03694093",
      "title": "Assessing the Effect of Patient Characteristics on Treatment Response in Primary Hyperhidrosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hyperhidrosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "St. Louis University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 41,
      "start_date": "2018-08-20",
      "completion_date": "2019-12-01",
      "has_results": false,
      "last_update_posted_date": "2020-02-05",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03694093"
    },
    {
      "nct_id": "NCT02684422",
      "title": "Initial and Chronic Methicillin Resistant Staphylococcus Aureus (MRSA) Infection in Cystic Fibrosis (CF)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Methicillin-Resistant Staphylococcus Aureus",
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "Intervention N/A. Observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "4 Years to 99 Years"
      },
      "enrollment_count": 48,
      "start_date": "2015-07",
      "completion_date": "2021-12",
      "has_results": false,
      "last_update_posted_date": "2022-01-20",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 3,
      "location_summary": "Birmingham, Alabama • Chapel Hill, North Carolina • Seattle, Washington",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02684422"
    },
    {
      "nct_id": "NCT04436055",
      "title": "Intergenerational Effects of Paternal Periconceptional Cannabis and Other Drug Use (EPIC)",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cannabis Use",
        "Drug Use",
        "Development, Infant"
      ],
      "interventions": [
        {
          "name": "No Intervention will be used",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 92,
      "start_date": "2020-10-26",
      "completion_date": "2022-07-01",
      "has_results": false,
      "last_update_posted_date": "2023-03-03",
      "last_synced_at": "2026-10-05T21:28:51.808Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04436055"
    }
  ]
}