{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study&page=14",
    "query": {
      "intervention": "Observational Study",
      "page": 14
    },
    "page_size": 10
  },
  "pagination": {
    "page": 14,
    "page_size": 10,
    "total_count": 4385,
    "total_pages": 439,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study&page=15&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Study&page=13&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-18T15:55:08.134Z",
  "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": "NCT01625221",
      "title": "Feasibility Study of the Magnetic Anal Sphincter (FENIX System)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fecal Incontinence"
      ],
      "interventions": [
        {
          "name": "Magnetic Anal Sphincter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Torax Medical Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "84 Years",
        "sex": "ALL",
        "summary": "19 Years to 84 Years"
      },
      "enrollment_count": 35,
      "start_date": "2008-12",
      "completion_date": "2016-03",
      "has_results": true,
      "last_update_posted_date": "2018-01-03",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Spokane, Washington",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01625221"
    },
    {
      "nct_id": "NCT04889521",
      "title": "Neuropathy Walks (Cross-sectional)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 75,
      "start_date": "2022-04-22",
      "completion_date": "2024-09-13",
      "has_results": false,
      "last_update_posted_date": "2025-03-07",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 2,
      "location_summary": "Blackwood, New Jersey • Newark, New Jersey",
      "locations": [
        {
          "city": "Blackwood",
          "state": "New Jersey"
        },
        {
          "city": "Newark",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04889521"
    },
    {
      "nct_id": "NCT05889806",
      "title": "AUD Biomarkers Study (Proteomic and Genomic Analysis of Biospecimens)",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Oncology",
        "Hematologic Malignancy",
        "Gastro-Intestinal Disorder",
        "Autoimmune Diseases",
        "Pregnancy Related",
        "Infectious Disease",
        "Cardiovascular Diseases",
        "Genitourinary Disease",
        "Renal Disease"
      ],
      "interventions": [
        {
          "name": "Observational Study Only. NO Intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Audubon Bioscience",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10000,
      "start_date": "2023-05-10",
      "completion_date": "2043-06-10",
      "has_results": false,
      "last_update_posted_date": "2023-06-05",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 1,
      "location_summary": "New Orleans, Louisiana",
      "locations": [
        {
          "city": "New Orleans",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05889806"
    },
    {
      "nct_id": "NCT00699400",
      "title": "Oocyte Cryopreservation Registry (HOPE Registry)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Oocyte Cryopreservation"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "EMD Serono",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 204,
      "start_date": "2008-06",
      "completion_date": "2012-07",
      "has_results": true,
      "last_update_posted_date": "2014-01-24",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 15,
      "location_summary": "Fountain Valley, California • Laguna Hills, California • Newport Beach, California + 11 more",
      "locations": [
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00699400"
    },
    {
      "nct_id": "NCT03535987",
      "title": "Pilot Cohort Study of Rb-82 Myocardial PET Imaging to Evaluate Coronary Microvascular Dysfunction in Men With Prostate Cancer Receiving Androgen-Deprivation Therapy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "myocardial PET imaging",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "51 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "51 Years and older · Male only"
      },
      "enrollment_count": 18,
      "start_date": "2018-01-19",
      "completion_date": "2019-10-19",
      "has_results": false,
      "last_update_posted_date": "2024-11-19",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03535987"
    },
    {
      "nct_id": "NCT07834684",
      "title": "Singula Phase 0.1 Primary Care Pilot",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Depression - Major Depressive Disorder",
        "Anxiety"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Singula Health, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2026-07-13",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 2,
      "location_summary": "Brentwood, New York • Mount Kisco, New York",
      "locations": [
        {
          "city": "Brentwood",
          "state": "New York"
        },
        {
          "city": "Mount Kisco",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07834684"
    },
    {
      "nct_id": "NCT02320292",
      "title": "Rituximab With or Without Yttrium Y-90 Ibritumomab Tiuxetan in Treating Patients With Untreated Follicular Lymphoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Ann Arbor Stage I Grade 1 Follicular Lymphoma",
        "Ann Arbor Stage I Grade 2 Follicular Lymphoma",
        "Ann Arbor Stage II Grade 1 Contiguous Follicular Lymphoma",
        "Ann Arbor Stage II Grade 1 Non-Contiguous Follicular Lymphoma",
        "Ann Arbor Stage II Grade 2 Contiguous Follicular Lymphoma",
        "Ann Arbor Stage II Grade 2 Non-Contiguous Follicular Lymphoma",
        "Ann Arbor Stage III Grade 1 Follicular Lymphoma",
        "Ann Arbor Stage III Grade 2 Follicular Lymphoma",
        "Ann Arbor Stage IV Grade 1 Follicular Lymphoma",
        "Ann Arbor Stage IV Grade 2 Follicular Lymphoma"
      ],
      "interventions": [
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Rituximab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Yttrium Y-90 Ibritumomab Tiuxetan",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BIOLOGICAL",
        "RADIATION"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2015-02-11",
      "completion_date": "2023-11-09",
      "has_results": true,
      "last_update_posted_date": "2025-07-09",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02320292"
    },
    {
      "nct_id": "NCT05675436",
      "title": "Investigating the Mechanistic Effects of Mitapivat in Subjects With Sickle Cell Disease",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Anemia",
        "Sickle Cell Thalassemia",
        "Sickle Cell Pain",
        "Hbss",
        "Hbsc",
        "Sickle Beta Thalassemia",
        "Sickle Beta Zero Thalassemia",
        "Sickle Cell Syndrome Variant"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "16 Years to 80 Years"
      },
      "enrollment_count": 6,
      "start_date": "2024-05-09",
      "completion_date": "2027-10-27",
      "has_results": false,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05675436"
    },
    {
      "nct_id": "NCT01476644",
      "title": "How Has Glaucoma Affected Your Quality of Life?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glaucoma",
        "Quality of Life"
      ],
      "interventions": [
        {
          "name": "Clinical evaluation",
          "type": "OTHER"
        },
        {
          "name": "Performance based measures",
          "type": "OTHER"
        },
        {
          "name": "Subjective measures of vision-related quality of life",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Wills Eye",
      "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": 161,
      "start_date": "2011-10",
      "completion_date": "2017-06",
      "has_results": true,
      "last_update_posted_date": "2019-11-15",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01476644"
    },
    {
      "nct_id": "NCT03389399",
      "title": "Pulmonary Physiology and Systemic Inflammatory in EO Pulmonary Events With Brigatinib Use in NSCLC and Other Diseases",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Non-Small Cell Lung Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 18,
      "start_date": "2018-02-22",
      "completion_date": "2021-10-01",
      "has_results": false,
      "last_update_posted_date": "2025-03-25",
      "last_synced_at": "2026-10-18T15:55:08.134Z",
      "location_count": 4,
      "location_summary": "Aurora, Colorado • Pittsburgh, Pennsylvania • Nashville, Tennessee + 1 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03389399"
    }
  ]
}