{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=N%2FA+%28Observational+Study%29",
    "query": {
      "intervention": "N/A (Observational Study)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 99,
    "total_pages": 10,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=N%2FA+%28Observational+Study%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-15T00:07:17.973Z",
  "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": "NCT02306135",
      "title": "Identifying Mechanisms of Resistance to mTOR Inhibitors in Cancer",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "n/a- this is an observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Dartmouth-Hitchcock Medical Center",
      "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": 2,
      "start_date": "2015-03",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2016-04-27",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Lebanon, New Hampshire",
      "locations": [
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02306135"
    },
    {
      "nct_id": "NCT05084417",
      "title": "A Prospective, Observational Study of Clinician and Patient-reported Outcomes in Patients With Dermatological Conditions",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atopic Dermatitis",
        "Dermatology",
        "Vitiligo",
        "Alopecia Areata",
        "Hidradenitis Suppurativa",
        "Psoriasis"
      ],
      "interventions": [
        {
          "name": "N/A This is an observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "OM1, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10000,
      "start_date": "2023-06-09",
      "completion_date": "2026-01-15",
      "has_results": false,
      "last_update_posted_date": "2023-11-01",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05084417"
    },
    {
      "nct_id": "NCT04631237",
      "title": "Developing a Down Syndrome Health Instrument",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Down Syndrome",
        "Health, Subjective"
      ],
      "interventions": [
        {
          "name": "Observational, no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 758,
      "start_date": "2020-04-03",
      "completion_date": "2025-03-31",
      "has_results": true,
      "last_update_posted_date": "2026-04-27",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04631237"
    },
    {
      "nct_id": "NCT04128475",
      "title": "Observational Study of Cardiovascular Disease.",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Diseases",
        "Cardiovascular Morbidity",
        "Coronary Heart Disease",
        "Low-density-lipoprotein-type"
      ],
      "interventions": [
        {
          "name": "N/A - observational study.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Sydney",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1137,
      "start_date": "2020-02-05",
      "completion_date": "2021-04-26",
      "has_results": false,
      "last_update_posted_date": "2024-04-08",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04128475"
    },
    {
      "nct_id": "NCT07462234",
      "title": "Continuous N-of-1 Computational Feasibility Study of a Whole Genome Sequence",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Computational Modeling of Individual Metabolic Pathways"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Bioactify LLC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 1,
      "start_date": "2026-03-05",
      "completion_date": "2027-03",
      "has_results": false,
      "last_update_posted_date": "2026-03-10",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Wappingers Falls, New York",
      "locations": [
        {
          "city": "Wappingers Falls",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07462234"
    },
    {
      "nct_id": "NCT06080646",
      "title": "Reward Processing and Depressive Subtypes: Identifying Neural Biotypes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Depression",
        "Depressive Disorder",
        "Major Depressive Disorder",
        "Major Depressive Episode",
        "Depressive Symptoms",
        "Anhedonia"
      ],
      "interventions": [
        {
          "name": "cross-sectional MRI and EEG assessments (NO INTERVENTION)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "San Francisco Veterans Affairs Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 158,
      "start_date": "2021-06-01",
      "completion_date": "2025-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-08",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06080646"
    },
    {
      "nct_id": "NCT03908632",
      "title": "An Observational Study to Assess the Prevalence and Outcomes of Primary Pulmonary Coccidioidomycosis in Persons Aged > / = 14 Years Presenting With Community Acquired Pneumonia (CAP) in Endemic Areas (SAnds-PPC)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Coccidioidomycosis",
        "Pneumonia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "14 Years to 99 Years"
      },
      "enrollment_count": 651,
      "start_date": "2019-02-14",
      "completion_date": "2023-12-05",
      "has_results": false,
      "last_update_posted_date": "2024-01-19",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 6,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • Bakersfield, California + 2 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Fresno",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03908632"
    },
    {
      "nct_id": "NCT05124119",
      "title": "Strategies to Enhance Recruitment and Retention of Black Individuals Into Clinical Trials for Substance Use Disorders",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Substance Use Disorders"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 63,
      "start_date": "2022-04-01",
      "completion_date": "2024-07-31",
      "has_results": true,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05124119"
    },
    {
      "nct_id": "NCT03349515",
      "title": "The Effect of Povidone-iodine Ophthalmic Surgical Prep Solution on Respiration in Children Undergoing Strabismus Surgery With General Anesthesia.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Strabismus"
      ],
      "interventions": [
        {
          "name": "Provodine-Iodine Solution",
          "type": "DRUG"
        },
        {
          "name": "Group B will receive three drops in each eye of ophthalmic balanced salt solution.",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "1 Year to 17 Years"
      },
      "enrollment_count": 106,
      "start_date": "2017-11-02",
      "completion_date": "2018-09-19",
      "has_results": true,
      "last_update_posted_date": "2019-09-16",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03349515"
    },
    {
      "nct_id": "NCT06395662",
      "title": "Stratification of Risks of Conversion of Radiologically Isolated Syndromes (RIS) by Identifying Biomarkers in Serum and Cerebrospinal Fluid.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Radiologically Isolated Syndrome",
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Centre Hospitalier Universitaire de Nīmes",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 320,
      "start_date": "2024-04-15",
      "completion_date": "2025-07-25",
      "has_results": false,
      "last_update_posted_date": "2026-06-01",
      "last_synced_at": "2026-09-15T00:07:17.973Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06395662"
    }
  ]
}