{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+with+no+interventions",
    "query": {
      "intervention": "Observational study with no interventions"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 350,
    "total_pages": 35,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+study+with+no+interventions&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-16T15:56:54.055Z",
  "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": "NCT04343898",
      "title": "Study of the Treatment and Outcomes in Critically Ill Patients With COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Coronavirus Infection"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5154,
      "start_date": "2020-04-01",
      "completion_date": "2023-07-01",
      "has_results": false,
      "last_update_posted_date": "2023-08-09",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04343898"
    },
    {
      "nct_id": "NCT04452149",
      "title": "Algorithm Using LINQ Sensors for Evaluation And Treatment of Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III"
      ],
      "interventions": [
        {
          "name": "Reveal LINQ™ Insertable Cardiac Monitor with investigational ALLEVIATE-HF RAMware download",
          "type": "DEVICE"
        },
        {
          "name": "Medication intervention",
          "type": "OTHER"
        },
        {
          "name": "Not Randomized to Device or Medication Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Medtronic Cardiac Rhythm and Heart Failure",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 826,
      "start_date": "2020-09-03",
      "completion_date": "2025-06-02",
      "has_results": true,
      "last_update_posted_date": "2026-08-26",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 53,
      "location_summary": "Mesa, Arizona • Jonesboro, Arkansas • Mission Viejo, California + 47 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        },
        {
          "city": "Stockton",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04452149"
    },
    {
      "nct_id": "NCT06919536",
      "title": "Controlled Feeding With 24 Hour Recall",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Evaluate Accuracy 24 Dietary Recall"
      ],
      "interventions": [
        {
          "name": "No intervention (observational study)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Texas Tech University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 75,
      "start_date": "2025-04-21",
      "completion_date": "2025-09-22",
      "has_results": false,
      "last_update_posted_date": "2025-11-18",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 1,
      "location_summary": "Lubbock, Texas",
      "locations": [
        {
          "city": "Lubbock",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06919536"
    },
    {
      "nct_id": "NCT03750344",
      "title": "ChroniSense Polso Wrist Worn Respiration Rate Validation Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Respiratory Rate"
      ],
      "interventions": [
        {
          "name": "Diagnostic test",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "ChroniSense Medical Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2018-11-06",
      "completion_date": "2018-11-30",
      "has_results": false,
      "last_update_posted_date": "2019-02-05",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 1,
      "location_summary": "Louisville, Colorado",
      "locations": [
        {
          "city": "Louisville",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03750344"
    },
    {
      "nct_id": "NCT06594913",
      "title": "Eating Disorders Genetics Initiative 2",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Anorexia Nervosa",
        "Bulimia Nervosa",
        "Binge-Eating Disorder",
        "Avoidant Restrictive Food Intake Disorder"
      ],
      "interventions": [
        {
          "name": "Eating disorder diagnosis group",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "12 Years to 99 Years"
      },
      "enrollment_count": 20000,
      "start_date": "2024-10-28",
      "completion_date": "2027-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-08",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06594913"
    },
    {
      "nct_id": "NCT07154823",
      "title": "A Longitudinal Multi-Center Molecular Biomarker Discovery Registry for Patients With Hematologic Malignancies",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Acute Myeloid Leukaemia (AML)",
        "Follicular Lymphoma ( FL)"
      ],
      "interventions": [
        {
          "name": "None - Observational Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Tempus AI",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "0 Years and older"
      },
      "enrollment_count": 550,
      "start_date": "2026-01-27",
      "completion_date": "2035-11",
      "has_results": false,
      "last_update_posted_date": "2026-09-02",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 10,
      "location_summary": "Iowa City, Iowa • Bethesda, Maryland • St Louis, Missouri + 7 more",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Reno",
          "state": "Nevada"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07154823"
    },
    {
      "nct_id": "NCT05497518",
      "title": "The KidneyCARE (Community Access to Research Equity) Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Kidney Disease",
        "Dialysis",
        "Kidney Transplant"
      ],
      "interventions": [
        {
          "name": "Observational study - registry",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Tufts Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 50000,
      "start_date": "2021-02-25",
      "completion_date": "2070-02-24",
      "has_results": false,
      "last_update_posted_date": "2025-05-13",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05497518"
    },
    {
      "nct_id": "NCT04708015",
      "title": "Retrospective Study of Glucose Monitoring for Glycemic Control in Patients With GSDIa",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glycogen Storage Disease Type IA"
      ],
      "interventions": [
        {
          "name": "No Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ultragenyx Pharmaceutical Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "8 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2020-11-05",
      "completion_date": "2022-03-04",
      "has_results": false,
      "last_update_posted_date": "2024-05-29",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04708015"
    },
    {
      "nct_id": "NCT07154615",
      "title": "Assessing Immune Dysfunction in Sepsis",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sepsis"
      ],
      "interventions": [
        {
          "name": "Observational Only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 150,
      "start_date": "2026-03-01",
      "completion_date": "2028-11-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-19",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07154615"
    },
    {
      "nct_id": "NCT05300724",
      "title": "An Observational Study of the Progression of Intermediate Age-Related Macular Degeneration",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Age-Related Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Genentech, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "94 Years",
        "sex": "ALL",
        "summary": "50 Years to 94 Years"
      },
      "enrollment_count": 400,
      "start_date": "2022-05-27",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-16",
      "last_synced_at": "2026-09-16T15:56:54.055Z",
      "location_count": 46,
      "location_summary": "Springdale, Arkansas • Encino, California • Fullerton, California + 40 more",
      "locations": [
        {
          "city": "Springdale",
          "state": "Arkansas"
        },
        {
          "city": "Encino",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Mountain View",
          "state": "California"
        },
        {
          "city": "Poway",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05300724"
    }
  ]
}