{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%3B+Observational+study",
    "query": {
      "intervention": "No intervention; Observational study"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 640,
    "total_pages": 64,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%3B+Observational+study&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-08T06:10:05.475Z",
  "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": "NCT01120847",
      "title": "Post Traumatic Stress Disorder (PTSD), Sleep Disordered Breathing And Genetics: Effects On Cognition",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stress Disorders, Post-Traumatic"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "55 Years to 90 Years"
      },
      "enrollment_count": 324,
      "start_date": "2004-09",
      "completion_date": "2017-03-10",
      "has_results": false,
      "last_update_posted_date": "2020-02-28",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01120847"
    },
    {
      "nct_id": "NCT05375617",
      "title": "European Prospective Investigation Into Childhood Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Acute Lymphoblastic Leukemia",
        "Brain Tumor"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "3 Years to 21 Years"
      },
      "enrollment_count": 1400,
      "start_date": "2023-07-07",
      "completion_date": "2031-03-01",
      "has_results": false,
      "last_update_posted_date": "2026-06-02",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05375617"
    },
    {
      "nct_id": "NCT04537676",
      "title": "Patient Empowerment Study",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetic Foot",
        "Quality of Life",
        "Mental Health Wellness 1",
        "Ulcer Foot",
        "Diabetes Complications"
      ],
      "interventions": [
        {
          "name": "No intervention, this is an observational study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Podimetrics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2020-09-15",
      "completion_date": "2022-03-01",
      "has_results": false,
      "last_update_posted_date": "2020-09-03",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 1,
      "location_summary": "Somerville, Massachusetts",
      "locations": [
        {
          "city": "Somerville",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04537676"
    },
    {
      "nct_id": "NCT07660640",
      "title": "Long-Term Follow Up of VOY-101 Non-nAMD Extension Study",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Age-Related Macular Degeneration (AMD)",
        "Non-Neovascular Age-Related Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "observational study",
          "type": "OTHER"
        },
        {
          "name": "VOY-101",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BIOLOGICAL"
      ],
      "sponsor": "Perceive Biotherapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 88,
      "start_date": "2026-03-03",
      "completion_date": "2031-08-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-22",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts • Bellaire, Texas • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Bellaire",
          "state": "Texas"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07660640"
    },
    {
      "nct_id": "NCT05537259",
      "title": "BUMPP: A Study to Better Understand Mood During the Perinatal Period",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy",
        "Postpartum",
        "Mental Health Issue"
      ],
      "interventions": [
        {
          "name": "Observation Group",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 168,
      "start_date": "2022-06-27",
      "completion_date": "2024-02-20",
      "has_results": false,
      "last_update_posted_date": "2025-01-13",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05537259"
    },
    {
      "nct_id": "NCT05086263",
      "title": "Effects of Virtual Reality MRI Preparedness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anxiety",
        "Educational Problems"
      ],
      "interventions": [
        {
          "name": "Pico G2 4k",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Children's Hospital Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "9 Years",
        "sex": "ALL",
        "summary": "8 Years to 9 Years"
      },
      "enrollment_count": 21,
      "start_date": "2022-02-23",
      "completion_date": "2023-08-01",
      "has_results": false,
      "last_update_posted_date": "2023-10-31",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05086263"
    },
    {
      "nct_id": "NCT00656916",
      "title": "Inhaled Corticosteroids Versus Observation for Patients With Decreased Lung Function Status",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Bronchiolitis"
      ],
      "interventions": [
        {
          "name": "Fluticasone Propionate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1,
      "start_date": "2008-03",
      "completion_date": "2010-12",
      "has_results": true,
      "last_update_posted_date": "2012-04-23",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00656916"
    },
    {
      "nct_id": "NCT07223684",
      "title": "TDAP in Burn Patients (Group 2)",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sepsis",
        "Burn Injury",
        "Wound Healing",
        "Critical Illness",
        "Multiple Organ Dysfunction Syndrome"
      ],
      "interventions": [
        {
          "name": "Observational Cohort (No Intervention)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Henry M. Jackson Foundation for the Advancement of Military Medicine",
      "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": 80,
      "start_date": "2026-05-15",
      "completion_date": "2027-12-15",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 3,
      "location_summary": "Tampa, Florida • Atlanta, Georgia • Houston, Texas",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07223684"
    },
    {
      "nct_id": "NCT07211178",
      "title": "Evaluating Minimal Residual Disease (MRD) Through Longitudinal Circulating Tumor DNA (ctDNA) Profiling in Breast Malignancies",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "TNBC - Triple-Negative Breast Cancer",
        "HR Positive/HER-2 Negative Breast Cancer",
        "HER2 + Breast Cancer",
        "Early Stage Breast Cancer"
      ],
      "interventions": [
        {
          "name": "There are no interventions in this observational study.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Tempus AI",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 900,
      "start_date": "2025-10-27",
      "completion_date": "2033-12",
      "has_results": false,
      "last_update_posted_date": "2026-09-03",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 16,
      "location_summary": "Birmingham, Alabama • Whittier, California • Weston, Florida + 13 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Whittier",
          "state": "California"
        },
        {
          "city": "Weston",
          "state": "Florida"
        },
        {
          "city": "Carbondale",
          "state": "Illinois"
        },
        {
          "city": "O'Fallon",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07211178"
    },
    {
      "nct_id": "NCT00053352",
      "title": "Surgery and Combination Chemotherapy in Treating Children With Extracranial Germ Cell Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Childhood Embryonal Tumor",
        "Childhood Extracranial Germ Cell Tumor",
        "Childhood Extragonadal Germ Cell Tumor",
        "Childhood Malignant Ovarian Germ Cell Tumor",
        "Childhood Malignant Testicular Germ Cell Tumor",
        "Childhood Teratoma",
        "Ovarian Embryonal Carcinoma",
        "Ovarian Yolk Sac Tumor",
        "Stage II Malignant Testicular Germ Cell Tumor",
        "Stage IIA Ovarian Germ Cell Tumor",
        "Stage IIB Ovarian Germ Cell Tumor",
        "Stage IIC Ovarian Germ Cell Tumor",
        "Stage III Malignant Testicular Germ Cell Tumor",
        "Stage IIIA Ovarian Germ Cell Tumor",
        "Stage IIIB Ovarian Germ Cell Tumor",
        "Stage IIIC Ovarian Germ Cell Tumor",
        "Testicular Choriocarcinoma and Yolk Sac Tumor",
        "Testicular Embryonal Carcinoma"
      ],
      "interventions": [
        {
          "name": "conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "cisplatin",
          "type": "DRUG"
        },
        {
          "name": "etoposide",
          "type": "DRUG"
        },
        {
          "name": "bleomycin sulfate",
          "type": "BIOLOGICAL"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 302,
      "start_date": "2003-11-03",
      "completion_date": "2021-06-30",
      "has_results": true,
      "last_update_posted_date": "2021-07-13",
      "last_synced_at": "2026-09-08T06:10:05.475Z",
      "location_count": 112,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 98 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Downey",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00053352"
    }
  ]
}