{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%3A+observation+only&page=4",
    "query": {
      "intervention": "No intervention: observation only",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 154,
    "total_pages": 16,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%3A+observation+only&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention%3A+observation+only&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-10T17:40:49.258Z",
  "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": "NCT00352534",
      "title": "Vincristine, Dactinomycin, and Doxorubicin With or Without Radiation Therapy or Observation Only in Treating Younger Patients Who Are Undergoing Surgery for Newly Diagnosed Stage I, Stage II, or Stage III Wilms' Tumor",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Stage I Kidney Wilms Tumor",
        "Stage II Kidney Wilms Tumor",
        "Stage III Kidney Wilms Tumor"
      ],
      "interventions": [
        {
          "name": "3-Dimensional Conformal Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Chest Radiography",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Dactinomycin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Doxorubicin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Therapeutic Conventional Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Ultrasound Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Vincristine Sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE",
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "29 Years",
        "sex": "ALL",
        "summary": "Up to 29 Years"
      },
      "enrollment_count": 808,
      "start_date": "2006-11-06",
      "completion_date": "2026-03-31",
      "has_results": true,
      "last_update_posted_date": "2026-06-03",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 210,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 150 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00352534"
    },
    {
      "nct_id": "NCT02103699",
      "title": "A Study to Examine Patient Characteristics, Health Care Management and Health Outcomes of Hepatitis C Virus (HCV) Patients Treated With Simeprevir",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hepatitis C Virus"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Scientific Affairs, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 315,
      "start_date": "2014-02",
      "completion_date": "2016-01",
      "has_results": false,
      "last_update_posted_date": "2016-02-22",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 32,
      "location_summary": "Phoenix, Arizona • Bakersfield, California • Beverly Hills, California + 29 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Daytona Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02103699"
    },
    {
      "nct_id": "NCT05804175",
      "title": "Advanced Prediction of Respiratory Depression Episode With the Linshom Continuous Predictive Respiratory Sensor",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Post Surgical Respiratory Failure",
        "Respiratory Complication"
      ],
      "interventions": [
        {
          "name": "Linshom Continuous Predictive Respiratory Monitoring",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Linshom Medical, 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": "2023-03-14",
      "completion_date": "2025-09-28",
      "has_results": false,
      "last_update_posted_date": "2024-03-01",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 2,
      "location_summary": "Ellicott City, Maryland • Columbus, Ohio",
      "locations": [
        {
          "city": "Ellicott City",
          "state": "Maryland"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05804175"
    },
    {
      "nct_id": "NCT03378336",
      "title": "Psoriatic Arthritis Research Collaborative: Biologic Sub-Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Psoriatic Arthritis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 171,
      "start_date": "2017-12-31",
      "completion_date": "2023-08-16",
      "has_results": true,
      "last_update_posted_date": "2025-05-09",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 4,
      "location_summary": "New York, New York • Cleveland, Ohio • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03378336"
    },
    {
      "nct_id": "NCT01398748",
      "title": "Intranasal Glutathione in Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Parkinson's Disease (PD)"
      ],
      "interventions": [
        {
          "name": "Intranasal glutathione - (in)GSH",
          "type": "DRUG"
        },
        {
          "name": "Saline Intranasal Delivery",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bastyr University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "21 Years to 100 Years"
      },
      "enrollment_count": 34,
      "start_date": "2012-07",
      "completion_date": "2016-01",
      "has_results": false,
      "last_update_posted_date": "2017-07-31",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 1,
      "location_summary": "Kenmore, Washington",
      "locations": [
        {
          "city": "Kenmore",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01398748"
    },
    {
      "nct_id": "NCT01957085",
      "title": "Undiagnosed Hepatitis C Infection in an Urban Hospital",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "observation only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Temple University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 366,
      "start_date": "2014-06",
      "completion_date": "2016-01",
      "has_results": true,
      "last_update_posted_date": "2020-04-24",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01957085"
    },
    {
      "nct_id": "NCT06464341",
      "title": "Nodal Burden and Nodal Recurrence in Patients With Isolated Tumor Cells After Neoadjuvant Chemotherapy Treated With Axillary Dissection or Nodal Radiation: the OPBC-05/EUBREAST-14R/ICARO Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Observational study no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University Hospital, Basel, Switzerland",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 100 Years · Female only"
      },
      "enrollment_count": 583,
      "start_date": "2023-05-04",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-01-20",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 20,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Miami, Florida + 11 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06464341"
    },
    {
      "nct_id": "NCT06293352",
      "title": "Real-component vs All-cement Articulating Spacers for Periprosthetic Knee Infection",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prosthetic-joint Infection",
        "Knee Infection",
        "Arthroplasty Complications",
        "Joint Infection",
        "Arthroplasty, Replacement, Knee"
      ],
      "interventions": [
        {
          "name": "All-cement articulating spacer",
          "type": "DEVICE"
        },
        {
          "name": "Durable, real-component articulating spacer",
          "type": "DEVICE"
        },
        {
          "name": "Rigid Spacer",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 153,
      "start_date": "2024-08-08",
      "completion_date": "2028-08",
      "has_results": false,
      "last_update_posted_date": "2026-08-24",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06293352"
    },
    {
      "nct_id": "NCT02264327",
      "title": "Phase II Motivational Interviewing: An Experiential Online Training Tool",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Use Disorders",
        "Chronic Mental Disorder",
        "HIV/AIDS"
      ],
      "interventions": [
        {
          "name": "Motivational Interviewing Simulator (SIM)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Motivational Interviewing eBook (eBook)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Motivational Interviewing Training (MI Training)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Center for Social Innovation, Massachusetts",
      "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": 3816,
      "start_date": "2016-08",
      "completion_date": "2017-10-01",
      "has_results": false,
      "last_update_posted_date": "2017-10-16",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 1,
      "location_summary": "Needham, Massachusetts",
      "locations": [
        {
          "city": "Needham",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02264327"
    },
    {
      "nct_id": "NCT01669720",
      "title": "Adjuvant Aflibercept for Metastatic Colorectal Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Aflibercept",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2012-12",
      "completion_date": "2016-01",
      "has_results": true,
      "last_update_posted_date": "2020-02-17",
      "last_synced_at": "2026-10-10T17:40:49.258Z",
      "location_count": 2,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01669720"
    }
  ]
}