{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=12",
    "query": {
      "intervention": "Observation Only",
      "page": 12
    },
    "page_size": 10
  },
  "pagination": {
    "page": 12,
    "page_size": 10,
    "total_count": 874,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=13&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+Only&page=11&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T09:26:04.981Z",
  "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": "NCT04055051",
      "title": "ATHN 11: Liver Transplantation Outcomes Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemophilia A and B",
        "Liver Transplantation"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "American Thrombosis and Hemostasis Network",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 86,
      "start_date": "2020-06-18",
      "completion_date": "2022-12-01",
      "has_results": false,
      "last_update_posted_date": "2023-05-10",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 15,
      "location_summary": "Los Angeles, California • San Francisco, California • Peoria, Illinois + 12 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Scarborough",
          "state": "Maine"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04055051"
    },
    {
      "nct_id": "NCT01665677",
      "title": "Atorvastatin as GVHD Prophylaxis for Allogeneic Hematopoietic Cell Transplantation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Graft vs Host Disease"
      ],
      "interventions": [
        {
          "name": "Atorvastatin calcium",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mehdi Hamadani",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 69,
      "start_date": "2014-01-20",
      "completion_date": "2021-07-09",
      "has_results": true,
      "last_update_posted_date": "2023-05-15",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 2,
      "location_summary": "Morgantown, West Virginia • Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Morgantown",
          "state": "West Virginia"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01665677"
    },
    {
      "nct_id": "NCT05489822",
      "title": "PMCF Study to Evaluate the VERTICALE® Cervical System in Spine Surgery According to Its Intended Use.",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Degenerative Disc Disease (DDD)",
        "Instabilities",
        "Trauma",
        "Deformity"
      ],
      "interventions": [
        {
          "name": "VERTICALE® Cervical System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Silony Medical GmbH",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4,
      "start_date": "2023-01-13",
      "completion_date": "2024-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-11",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05489822"
    },
    {
      "nct_id": "NCT06916728",
      "title": "A Post Approval Multicenter 10 Year Follow-up Observational Trial of Marketed Product - MP01 vs. Surgical Standard of Care (SSOC) Used for the Treatment of Joint Surface Lesions of the Knee",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Knee Injuries",
        "Joint Surface Knee Lesions"
      ],
      "interventions": [
        {
          "name": "Marketed Product - MP01",
          "type": "DEVICE"
        },
        {
          "name": "Surgical Standard of Care",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Smith & Nephew, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 170,
      "start_date": "2025-05-05",
      "completion_date": "2030-02-04",
      "has_results": false,
      "last_update_posted_date": "2026-07-16",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 1,
      "location_summary": "La Mesa, California",
      "locations": [
        {
          "city": "La Mesa",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06916728"
    },
    {
      "nct_id": "NCT01035775",
      "title": "Does Inspection During Insertion Improve Adenoma Yields During Colonoscopy?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colorectal Cancer",
        "Colorectal Polyps"
      ],
      "interventions": [
        {
          "name": "Inspection during insertion",
          "type": "PROCEDURE"
        },
        {
          "name": "Inspection during withdrawal",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 340,
      "start_date": "2009-12",
      "completion_date": "2011-01",
      "has_results": false,
      "last_update_posted_date": "2018-11-16",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 2,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01035775"
    },
    {
      "nct_id": "NCT02124798",
      "title": "A Phase 2B Open-Label, Single-Arm, Repeat-Dose Study to Evaluate the Reliability of an Autoinjector",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Systemic Lupus Erythematosus"
      ],
      "interventions": [
        {
          "name": "Belimumab autoinjector",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 95,
      "start_date": "2014-05-20",
      "completion_date": "2015-04-13",
      "has_results": true,
      "last_update_posted_date": "2018-04-11",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 27,
      "location_summary": "Birmingham, Alabama • Tuscaloosa, Alabama • Gilbert, Arizona + 22 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tuscaloosa",
          "state": "Alabama"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02124798"
    },
    {
      "nct_id": "NCT06745999",
      "title": "Cryotherapy in Combination With Red Light PDT for Actinic Keratosis of Full Face",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Actinic Keratoses"
      ],
      "interventions": [
        {
          "name": "Ameluz 10% Topical Gel",
          "type": "DRUG"
        },
        {
          "name": "Red Light PDT",
          "type": "DEVICE"
        },
        {
          "name": "Cryotherapy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Psoriasis Treatment Center of Central New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2023-05-03",
      "completion_date": "2026-11",
      "has_results": false,
      "last_update_posted_date": "2026-10-14",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 1,
      "location_summary": "East Windsor, New Jersey",
      "locations": [
        {
          "city": "East Windsor",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06745999"
    },
    {
      "nct_id": "NCT04212143",
      "title": "Central Blood Pressure and Pulse Wave Velocity in Kidney Transplant Recipients",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "there is no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's National Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "3 Years to 21 Years"
      },
      "enrollment_count": 150,
      "start_date": "2021-07-01",
      "completion_date": "2026-07-01",
      "has_results": false,
      "last_update_posted_date": "2025-07-03",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04212143"
    },
    {
      "nct_id": "NCT02718417",
      "title": "Avelumab in Previously Untreated Patients With Epithelial Ovarian Cancer (JAVELIN OVARIAN 100)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Ovarian Cancer"
      ],
      "interventions": [
        {
          "name": "carboplatin",
          "type": "DRUG"
        },
        {
          "name": "paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "Avelumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 998,
      "start_date": "2016-05-19",
      "completion_date": "2019-05-16",
      "has_results": true,
      "last_update_posted_date": "2020-07-14",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 146,
      "location_summary": "Alabaster, Alabama • Bessemer, Alabama • Birmingham, Alabama + 70 more",
      "locations": [
        {
          "city": "Alabaster",
          "state": "Alabama"
        },
        {
          "city": "Bessemer",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02718417"
    },
    {
      "nct_id": "NCT01109459",
      "title": "Multimodal Physician Intervention to Detect Amblyopia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Amblyopia",
        "Strabismus"
      ],
      "interventions": [
        {
          "name": "Pediatric blood pressure screening",
          "type": "OTHER"
        },
        {
          "name": "Pediatric vision screening",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 136,
      "start_date": "2004-09",
      "completion_date": "2008-10",
      "has_results": false,
      "last_update_posted_date": "2010-04-23",
      "last_synced_at": "2026-10-20T09:26:04.981Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01109459"
    }
  ]
}