{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational%29&page=12",
    "query": {
      "intervention": "No intervention (observational)",
      "page": 12
    },
    "page_size": 10
  },
  "pagination": {
    "page": 12,
    "page_size": 10,
    "total_count": 1065,
    "total_pages": 107,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational%29&page=13&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational%29&page=11&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-27T16:52:42.964Z",
  "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": "NCT06352060",
      "title": "Dynamic Data-Driven Management of Atrial Fibrillation Using Implantable Cardiac Monitors: The MONITOR-AF Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "No intervention or administration will be performed due to the observational nature of the study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Kansas City Heart Rhythm Research Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 598,
      "start_date": "2018-01-01",
      "completion_date": "2021-12-31",
      "has_results": true,
      "last_update_posted_date": "2025-04-18",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 7,
      "location_summary": "Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Independence",
          "state": "Missouri"
        },
        {
          "city": "Independence",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06352060"
    },
    {
      "nct_id": "NCT06163534",
      "title": "A Longitudinal Multi-Omic Biomarker Profiling Study of Patients With Head & Neck Squamous Cell Carcinoma (HNSCC)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Head and Neck Squamous Cell Carcinoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Tempus AI",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2024-08-01",
      "completion_date": "2028-03-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-03",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 31,
      "location_summary": "Duarte, California • Los Angeles, California • Palo Alto, California + 25 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Santa Rosa",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06163534"
    },
    {
      "nct_id": "NCT00537134",
      "title": "Trial on Endovascular Aneurysm Management",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Brain Aneurysm"
      ],
      "interventions": [
        {
          "name": "Embolization, coiling",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Centre hospitalier de l'Université de Montréal (CHUM)",
      "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": "2006-04",
      "completion_date": "2009-07",
      "has_results": true,
      "last_update_posted_date": "2022-12-30",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 6,
      "location_summary": "Phoenix, Arizona • Boston, Massachusetts • Brooklyn, New York + 3 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Brooklyn",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00537134"
    },
    {
      "nct_id": "NCT05558371",
      "title": "International CDKL5 Clinical Research Network",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "CDKL5",
        "CDKL5 Deficiency Disorder",
        "CDD"
      ],
      "interventions": [
        {
          "name": "No intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "1 Month to 100 Years"
      },
      "enrollment_count": 1000,
      "start_date": "2021-02-15",
      "completion_date": "2027-02-15",
      "has_results": false,
      "last_update_posted_date": "2023-12-06",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 8,
      "location_summary": "Los Angeles, California • Aurora, Colorado • Boston, Massachusetts + 5 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05558371"
    },
    {
      "nct_id": "NCT01997502",
      "title": "Accuracy of Pulse CO-Oximetry Technology in Characterizing Noninvasive SpHb",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Surgery",
        "Hemoglobin"
      ],
      "interventions": [
        {
          "name": "Pulse CO-Oximetry Technology",
          "type": "DEVICE"
        },
        {
          "name": "Blood draw",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 621,
      "start_date": "2013-11-26",
      "completion_date": "2024-10-21",
      "has_results": false,
      "last_update_posted_date": "2025-04-09",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 1,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01997502"
    },
    {
      "nct_id": "NCT00453453",
      "title": "BNP Therapy Observation Unit Outcomes STudy (BOOST)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Nesiritide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 17,
      "start_date": "2007-03",
      "completion_date": "2007-09",
      "has_results": false,
      "last_update_posted_date": "2015-02-09",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00453453"
    },
    {
      "nct_id": "NCT04228107",
      "title": "Treatment Phenotypes for Adolescents With Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma in Children",
        "Adherence, Treatment"
      ],
      "interventions": [
        {
          "name": "Medication monitoring",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "12 Years to 90 Years"
      },
      "enrollment_count": 80,
      "start_date": "2020-11-16",
      "completion_date": "2024-07-14",
      "has_results": true,
      "last_update_posted_date": "2025-11-06",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04228107"
    },
    {
      "nct_id": "NCT05150639",
      "title": "Vaginal Microbiome and IVF Pregnancy Outcome",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vaginal Flora Imbalance"
      ],
      "interventions": [
        {
          "name": "IVF",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Freya Biosciences ApS",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "44 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 44 Years · Female only"
      },
      "enrollment_count": 301,
      "start_date": "2022-03-18",
      "completion_date": "2023-05-26",
      "has_results": false,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 1,
      "location_summary": "Waltham, Massachusetts",
      "locations": [
        {
          "city": "Waltham",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05150639"
    },
    {
      "nct_id": "NCT06388109",
      "title": "Positive Peers Intervention Clinical Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Positive Peers mobile app",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "MetroHealth Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "34 Years",
        "sex": "ALL",
        "summary": "13 Years to 34 Years"
      },
      "enrollment_count": 250,
      "start_date": "2024-06-03",
      "completion_date": "2027-11",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 7,
      "location_summary": "Van Nuys, California • Newark, New Jersey • Cincinnati, Ohio + 4 more",
      "locations": [
        {
          "city": "Van Nuys",
          "state": "California"
        },
        {
          "city": "Newark",
          "state": "New Jersey"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06388109"
    },
    {
      "nct_id": "NCT04606498",
      "title": "Blood Purification With Seraph 100 Microbind Affinity Blood Filter for Treatment of Severe COVID19 Observational Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Henry M. Jackson Foundation for the Advancement of Military Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2020-12-18",
      "completion_date": "2023-01-01",
      "has_results": false,
      "last_update_posted_date": "2022-11-01",
      "last_synced_at": "2026-10-27T16:52:42.964Z",
      "location_count": 14,
      "location_summary": "Los Angeles, California • Aurora, Colorado • Orlando, Florida + 7 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Brunswick",
          "state": "Georgia"
        },
        {
          "city": "Fort Gordon",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04606498"
    }
  ]
}