{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=42",
    "query": {
      "intervention": "observational study",
      "page": 42
    },
    "page_size": 10
  },
  "pagination": {
    "page": 42,
    "page_size": 10,
    "total_count": 4386,
    "total_pages": 439,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=43&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=41&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-21T05:51:56.002Z",
  "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": "NCT03930641",
      "title": "Study of the Safety of Brolucizumab 6 mg in Prefilled Syringe in Patients With Neovascular Age Related Macular Degeneration",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Neovascular Age Related Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "RTH258",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 34,
      "start_date": "2019-05-23",
      "completion_date": "2019-07-02",
      "has_results": true,
      "last_update_posted_date": "2021-01-05",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 3,
      "location_summary": "Altamonte Springs, Florida • Pensacola, Florida • Richmond, Virginia",
      "locations": [
        {
          "city": "Altamonte Springs",
          "state": "Florida"
        },
        {
          "city": "Pensacola",
          "state": "Florida"
        },
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03930641"
    },
    {
      "nct_id": "NCT05526157",
      "title": "An Observational Study, Called FINEGUST, to Learn More About How People With Chronic Kidney Disease and Type 2 Diabetes Are Treated and How the Introduction of New Treatment Options, Like Finerenone, Impacts Clinical Practice",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Kidney Disease",
        "Type 2 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Finerenone (Kerendia, BAY 948862)",
          "type": "DRUG"
        },
        {
          "name": "Sodium-glucose cotransporter 2 inhibitors (SGLT2i)",
          "type": "DRUG"
        },
        {
          "name": "Glucagon-like peptide-1 receptor agonists (GLP 1 RA)",
          "type": "DRUG"
        },
        {
          "name": "Steroidal mineral corticoid receptor antagonists (sMRA)",
          "type": "DRUG"
        },
        {
          "name": "Non-steroidal mineral corticoid receptor antagonists (nsMRA)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50000,
      "start_date": "2022-10-01",
      "completion_date": "2024-09-05",
      "has_results": false,
      "last_update_posted_date": "2024-10-15",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 1,
      "location_summary": "Eden Prairie, Minnesota",
      "locations": [
        {
          "city": "Eden Prairie",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05526157"
    },
    {
      "nct_id": "NCT05820100",
      "title": "Observational Study to Assess the Reliability and Validity of the MLYMT and MLSDT",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Retinitis Pigmentosa",
        "Retinal Dystrophy"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Nanoscope Therapeutics Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 35,
      "start_date": "2023-04-25",
      "completion_date": "2023-10-17",
      "has_results": false,
      "last_update_posted_date": "2024-01-05",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 7,
      "location_summary": "Phoenix, Arizona • Beverly Hills, California • Miami, Florida + 4 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Fargo",
          "state": "North Dakota"
        },
        {
          "city": "Bellaire",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05820100"
    },
    {
      "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": "2026-10-21T05:51:56.002Z",
      "location_count": 1,
      "location_summary": "Louisville, Colorado",
      "locations": [
        {
          "city": "Louisville",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03750344"
    },
    {
      "nct_id": "NCT05717101",
      "title": "Patient Registry in Patients Undergoing Contrast-Enhanced Harmonic Endoscopic Ultrasound Imaging",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hematopoietic and Lymphoid System Neoplasm",
        "Malignant Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 4,
      "start_date": "2018-12-17",
      "completion_date": "2020-10-29",
      "has_results": false,
      "last_update_posted_date": "2024-09-24",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05717101"
    },
    {
      "nct_id": "NCT05139992",
      "title": "COVID-19 Vaccine Response in Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ASH Research Collaborative",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 59,
      "start_date": "2021-12-01",
      "completion_date": "2023-12-31",
      "has_results": true,
      "last_update_posted_date": "2025-02-14",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 8,
      "location_summary": "Oakland, California • Washington D.C., District of Columbia • Baltimore, Maryland + 5 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05139992"
    },
    {
      "nct_id": "NCT07409636",
      "title": "A Study to Assess the Real-World Effectiveness of Inclisiran and PCSK9 mAbs in Chinese Hypercholesterolemia Adult Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypercholesterolemia",
        "Mixed Dyslipidemia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 11991,
      "start_date": "2025-01-23",
      "completion_date": "2025-12-22",
      "has_results": false,
      "last_update_posted_date": "2026-02-17",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07409636"
    },
    {
      "nct_id": "NCT02118636",
      "title": "Observational Study to Evaluate Mechanisms of Aromatase Inhibitor Associated Musculoskeletal Symptoms",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Arthralgia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Lynn Henry",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "21 Years and older · Female only"
      },
      "enrollment_count": 75,
      "start_date": "2009-10",
      "completion_date": "2015-09",
      "has_results": false,
      "last_update_posted_date": "2016-03-07",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02118636"
    },
    {
      "nct_id": "NCT02402244",
      "title": "Project: Every Child for Younger Patients With Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adrenal Gland Pheochromocytoma",
        "Carcinoma In Situ",
        "Central Nervous System Neoplasm",
        "Childhood Immature Teratoma",
        "Childhood Kidney Neoplasm",
        "Childhood Langerhans Cell Histiocytosis",
        "Childhood Mature Teratoma",
        "Congenital Mesoblastic Nephroma",
        "Desmoid Fibromatosis",
        "Ganglioneuroma",
        "Lymphoproliferative Disorder",
        "Malignant Neoplasm",
        "Malignant Solid Neoplasm",
        "Melanocytic Neoplasm",
        "Myeloproliferative Neoplasm",
        "Neoplasm of Uncertain Malignant Potential",
        "Neuroendocrine Neoplasm",
        "Stromal Neoplasm"
      ],
      "interventions": [
        {
          "name": "Cytology Specimen Collection Procedure",
          "type": "OTHER"
        },
        {
          "name": "Medical Chart Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "Up to 25 Years"
      },
      "enrollment_count": 75000,
      "start_date": "2015-11-03",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-25",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 246,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 177 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Kingman",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02402244"
    },
    {
      "nct_id": "NCT07596030",
      "title": "Self-applied taVNS for CIPN",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chemotherapy Induced Peripheral Neuropathy"
      ],
      "interventions": [
        {
          "name": "Transcutaneous Auricular Vagus Nerve Stimulation (taVNS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 36,
      "start_date": "2026-06-02",
      "completion_date": "2027-07",
      "has_results": false,
      "last_update_posted_date": "2026-06-26",
      "last_synced_at": "2026-10-21T05:51:56.002Z",
      "location_count": 1,
      "location_summary": "Coral Gables, Florida",
      "locations": [
        {
          "city": "Coral Gables",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07596030"
    }
  ]
}