{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=28",
    "query": {
      "intervention": "observational study",
      "page": 28
    },
    "page_size": 10
  },
  "pagination": {
    "page": 28,
    "page_size": 10,
    "total_count": 4385,
    "total_pages": 439,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=29&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=27&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T03:37:50.243Z",
  "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": "NCT02725684",
      "title": "Using Genomic Analysis to Guide Individual Treatment in Glioblastoma",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glioblastoma"
      ],
      "interventions": [
        {
          "name": "Observational study, no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rockefeller University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "3 Years to 100 Years"
      },
      "enrollment_count": 36,
      "start_date": "2015-03-12",
      "completion_date": "2017-07-07",
      "has_results": false,
      "last_update_posted_date": "2017-10-25",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 7,
      "location_summary": "New York, New York • The Bronx, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02725684"
    },
    {
      "nct_id": "NCT03064906",
      "title": "Insulet Artificial Pancreas Evaluating Meal Performance and Moderate Exercise (IDE2)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 1 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Insulet AP (artificial pancreas) System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Insulet Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 24,
      "start_date": "2017-03-18",
      "completion_date": "2017-04-07",
      "has_results": false,
      "last_update_posted_date": "2018-06-12",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 3,
      "location_summary": "Palo Alto, California • Walnut Creek, California • Denver, Colorado",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03064906"
    },
    {
      "nct_id": "NCT03116633",
      "title": "Concordance of Inivata Liquid Biopsy With Standard Tissue Biopsy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Non-Small Cell Lung Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Inivata",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 34,
      "start_date": "2017-06-30",
      "completion_date": "2018-12-31",
      "has_results": false,
      "last_update_posted_date": "2019-05-16",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 6,
      "location_summary": "Fort Smith, Arkansas • Joplin, Missouri • Springfield, Missouri + 3 more",
      "locations": [
        {
          "city": "Fort Smith",
          "state": "Arkansas"
        },
        {
          "city": "Joplin",
          "state": "Missouri"
        },
        {
          "city": "Springfield",
          "state": "Missouri"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Allentown",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03116633"
    },
    {
      "nct_id": "NCT07199764",
      "title": "Maintenance Combinatorial Myeloid Immunotherapy for Unresectable Pancreatic Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pancreatic Ductal Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Odetiglucan",
          "type": "DRUG"
        },
        {
          "name": "Mitazalimab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-11-25",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-06-10",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07199764"
    },
    {
      "nct_id": "NCT00554099",
      "title": "Asacol Acute Diverticulitis(DIVA)Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Diverticulitis"
      ],
      "interventions": [
        {
          "name": "Mesalamine",
          "type": "DRUG"
        },
        {
          "name": "Probiotic",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Dietary Advice",
          "type": "OTHER"
        },
        {
          "name": "Antibiotic for Diverticulitis",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Warner Chilcott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "35 Years to 85 Years"
      },
      "enrollment_count": 117,
      "start_date": "2007-11",
      "completion_date": "2010-03",
      "has_results": true,
      "last_update_posted_date": "2013-04-22",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 36,
      "location_summary": "Tucson, Arizona • Los Angeles, California • Merced, California + 33 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Merced",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00554099"
    },
    {
      "nct_id": "NCT03122106",
      "title": "Neoantigen DNA Vaccine in Pancreatic Cancer Patients Following Surgical Resection and Adjuvant Chemotherapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pancreatic Cancer",
        "Pancreas Cancer",
        "Cancer of the Pancreas"
      ],
      "interventions": [
        {
          "name": "Personalized neoantigen DNA vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "TDS-IM Electrode Array System",
          "type": "DEVICE"
        },
        {
          "name": "Peripheral blood draws",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2018-01-05",
      "completion_date": "2022-08-13",
      "has_results": true,
      "last_update_posted_date": "2023-10-10",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • St Louis, Missouri",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03122106"
    },
    {
      "nct_id": "NCT07553234",
      "title": "Study to Understand Relationship Between Gut Health and Toxicities of Hormonal Breast Cancer Treatment",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Stool Sampling",
          "type": "OTHER"
        },
        {
          "name": "Chia Seeds",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Chicago",
      "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": "2026-09-21",
      "completion_date": "2030-05-03",
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07553234"
    },
    {
      "nct_id": "NCT06645652",
      "title": "Visual Arts Interventions With Older Adults",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Feasibility Study"
      ],
      "interventions": [
        {
          "name": "Training in observational drawing",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Arts engagement through digital galleries",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Northeastern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "55 Years to 85 Years"
      },
      "enrollment_count": 40,
      "start_date": "2025-10-01",
      "completion_date": "2026-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-07",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06645652"
    },
    {
      "nct_id": "NCT02337452",
      "title": "Web-Based Family Outreach Program for Cancer Prevention in High-Risk Families",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Malignant Neoplasm"
      ],
      "interventions": [
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Web Site",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2015-04-10",
      "completion_date": "2048-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-06",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02337452"
    },
    {
      "nct_id": "NCT07521371",
      "title": "Intranasal Insulin for Autism Spectrum Disorder in Children and Young Adults Aged 4 to 21 Years",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Autism Spectrum Disorder",
        "Autism Spectrum Disorder (ASD)",
        "Autism Spectrum Disorder High-Functioning",
        "Autism Spectrum Disorder With Absence of Functional Language",
        "Autism Spectrum Disorder With Impaired Functional Language",
        "Autistic Disorder of Childhood Onset With Full Syndrome",
        "Autistic Disorders Spectrum",
        "Autistic Disorder",
        "Autistic Disorder in Children and Adolescents",
        "Neurodevelopmental Disorders",
        "Neurodevelopmental Disorders (NDD)",
        "Neurodevelopmental Disorders and Developmental Abnormalities"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Healing Hope International",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "4 Years to 21 Years"
      },
      "enrollment_count": 12,
      "start_date": "2026-06-01",
      "completion_date": "2030-01-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-09",
      "last_synced_at": "2026-10-20T03:37:50.243Z",
      "location_count": 1,
      "location_summary": "Spring, Texas",
      "locations": [
        {
          "city": "Spring",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07521371"
    }
  ]
}