{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=36",
    "query": {
      "intervention": "No intervention (observational study)",
      "page": 36
    },
    "page_size": 10
  },
  "pagination": {
    "page": 36,
    "page_size": 10,
    "total_count": 919,
    "total_pages": 92,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=37&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention+%28observational+study%29&page=35&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-23T17:44:05.257Z",
  "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": "NCT04001413",
      "title": "Therapy for High-Risk HPV 16-Positive Oropharynx Cancer Patients",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HPV Positive Oropharyngeal Squamous Cell Carcinoma",
        "Oropharynx Cancer",
        "HPV-Related Carcinoma"
      ],
      "interventions": [
        {
          "name": "MEDI0457",
          "type": "DRUG"
        },
        {
          "name": "Durvalumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2019-09-17",
      "completion_date": "2021-03-25",
      "has_results": false,
      "last_update_posted_date": "2022-07-29",
      "last_synced_at": "2026-10-23T17:44:05.257Z",
      "location_count": 4,
      "location_summary": "Baltimore, Maryland • New York, New York • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04001413"
    },
    {
      "nct_id": "NCT03248310",
      "title": "A Study Comparing Quality of Life in Patients With Lymphedema Who Undergo Surgical Treatment Versus Non-Surgical Management",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lymphedema"
      ],
      "interventions": [
        {
          "name": "Quality of Life Assessments",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 600,
      "start_date": "2017-08-09",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-09-24",
      "last_synced_at": "2026-10-23T17:44:05.257Z",
      "location_count": 3,
      "location_summary": "Harrison, New York • New York, New York • Rockville Centre, New York",
      "locations": [
        {
          "city": "Harrison",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rockville Centre",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03248310"
    },
    {
      "nct_id": "NCT04608617",
      "title": "SYNCHRONISE: LVO Triage Timing and Outcome Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stroke, Ischemic"
      ],
      "interventions": [
        {
          "name": "Viz LVO (De Novo Number DEN170073)",
          "type": "DEVICE"
        },
        {
          "name": "Baseline Effectiveness Cohort",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Viz.ai, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 600,
      "start_date": "2021-03-09",
      "completion_date": "2023-04-26",
      "has_results": false,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-10-23T17:44:05.257Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Memphis, Tennessee • Harlingen, Texas",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        },
        {
          "city": "Harlingen",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04608617"
    },
    {
      "nct_id": "NCT04806620",
      "title": "Unhide® Project: A Digital Health Platform to Collect Lifestyle Data for Brain Inflammation Research",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Post-Acute COVID-19 Syndrome",
        "ME/CFS",
        "Rheumatic Arthritis",
        "Juvenile Rheumatoid Arthritis (JRA)",
        "Psoriatic Arthritis (PsA)",
        "Ankylosing Spondylitis (AS)",
        "Autoimmune Encephalitis",
        "Celiac Disease",
        "Celiac Disease in Children",
        "Chronic Lyme Disease",
        "Post-treatment Lyme Disease Syndrome",
        "Crohn's Disease",
        "Dysautonomia",
        "Anorexia Nervosa",
        "Bulimia Nervosa",
        "ARFID",
        "Avoidant / Restrictive Food Intake Disorder",
        "Ehlers Danlos Syndrome",
        "Endometriosis",
        "Fibromyalgia (FM)",
        "Long COVID",
        "Lupus",
        "Migraines",
        "Mast Cell Activation Syndrome",
        "Multiple Sclerosis",
        "Myalgic Encephalomyelitis (ME)",
        "Myasthenia Gravis, Generalized",
        "Myasthenia Gravis in Children",
        "Narcolepsy",
        "Obsessive Compulsive Disorder (OCD)",
        "PANDAS",
        "Pediatric Acute-onset Neuropsychiatric Syndrome (PANS)",
        "POTS - Postural Orthostatic Tachycardia Syndrome",
        "General Anxiety Disorder, Social Anxiety Disorder",
        "PTSD - Post Traumatic Stress Disorder",
        "Psoriasis",
        "Traumatic Brain Injury",
        "Tourette's Syndrome",
        "Inflammatory Bowel Disease (IBD)",
        "Autoimmune Diseases",
        "Neurological Diseases or Conditions",
        "Psychiatric Disorder",
        "Sjogren's Syndrome",
        "Ulcerative Colitis and Crohn's Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Brain Inflammation Collaborative",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 10000,
      "start_date": "2023-07-05",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-22",
      "last_synced_at": "2026-10-23T17:44:05.257Z",
      "location_count": 1,
      "location_summary": "Delafield, Wisconsin",
      "locations": [
        {
          "city": "Delafield",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04806620"
    },
    {
      "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": "2026-10-23T17:44:05.257Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04343898"
    },
    {
      "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": "2026-10-23T17:44:05.257Z",
      "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": "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": "2026-10-23T17:44:05.257Z",
      "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": "NCT01931839",
      "title": "A Phase 3 Rollover Study of Lumacaftor in Combination With Ivacaftor in Subjects 12 Years and Older With Cystic Fibrosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Cystic Fibrosis, Homozygous or Heterozygous for the F508del-CFTR Mutation"
      ],
      "interventions": [
        {
          "name": "Lumacaftor Plus Ivacaftor Combination",
          "type": "DRUG"
        },
        {
          "name": "Ivacaftor",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vertex Pharmaceuticals Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 1164,
      "start_date": "2013-10",
      "completion_date": "2016-04",
      "has_results": true,
      "last_update_posted_date": "2017-05-12",
      "last_synced_at": "2026-10-23T17:44:05.257Z",
      "location_count": 91,
      "location_summary": "Birmingham, Alabama • Anchorage, Alaska • Tucson, Arizona + 88 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01931839"
    },
    {
      "nct_id": "NCT01809132",
      "title": "Efficacy Study of Anakinra, Pentoxifylline, and Zinc Compared to Methylprednisolone in Severe Acute Alcoholic Hepatitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Acute Alcoholic Hepatitis"
      ],
      "interventions": [
        {
          "name": "Anakinra",
          "type": "DRUG"
        },
        {
          "name": "Pentoxifylline",
          "type": "DRUG"
        },
        {
          "name": "Zinc Sulfate",
          "type": "DRUG"
        },
        {
          "name": "Methylprednisolone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mack Mitchell",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "21 Years to 70 Years"
      },
      "enrollment_count": 104,
      "start_date": "2013-09",
      "completion_date": "2018-10",
      "has_results": true,
      "last_update_posted_date": "2021-11-01",
      "last_synced_at": "2026-10-23T17:44:05.257Z",
      "location_count": 4,
      "location_summary": "Louisville, Kentucky • Worcester, Massachusetts • Cleveland, Ohio + 1 more",
      "locations": [
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Worcester",
          "state": "Massachusetts"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01809132"
    },
    {
      "nct_id": "NCT01972516",
      "title": "Tivozanib As Maintenance Therapy In GYN",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ovarian Cancer",
        "Fallopian Tube Cancer",
        "Primary Peritoneal Carcinoma"
      ],
      "interventions": [
        {
          "name": "Tivozanib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Dana-Farber Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 4,
      "start_date": "2013-11",
      "completion_date": "2016-01",
      "has_results": true,
      "last_update_posted_date": "2017-06-05",
      "last_synced_at": "2026-10-23T17:44:05.257Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01972516"
    }
  ]
}