{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=33",
    "query": {
      "intervention": "Observation only",
      "page": 33
    },
    "page_size": 10
  },
  "pagination": {
    "page": 33,
    "page_size": 10,
    "total_count": 879,
    "total_pages": 88,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=34&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observation+only&page=32&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-02T20:25:58.717Z",
  "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": "NCT02187861",
      "title": "A Study Evaluating the Safety and Efficacy of Venetoclax (GDC-0199) Plus Bendamustine + Rituximab (BR) in Comparison With BR or Venetoclax Plus Rituximab in Participants With Relapsed and Refractory Follicular Non-Hodgkin's Lymphoma (fNHL)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Follicular Lymphoma"
      ],
      "interventions": [
        {
          "name": "Venetoclax",
          "type": "DRUG"
        },
        {
          "name": "Bendamustine",
          "type": "DRUG"
        },
        {
          "name": "Rituximab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 163,
      "start_date": "2014-12-01",
      "completion_date": "2018-03-16",
      "has_results": true,
      "last_update_posted_date": "2019-06-05",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 17,
      "location_summary": "Mobile, Alabama • Tucson, Arizona • Los Angeles, California + 12 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Austell",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02187861"
    },
    {
      "nct_id": "NCT07706140",
      "title": "Observational Data Collection for Blood Hemoglobin Algorithm Validation in Pediatrics",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hemoglobin",
        "Cerebral Oxygenation",
        "Congenital Heart Disease"
      ],
      "interventions": [
        {
          "name": "Noninvasive hemoglobin monitoring",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Days",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "0 Days to 21 Years"
      },
      "enrollment_count": 100,
      "start_date": "2026-08",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-27",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07706140"
    },
    {
      "nct_id": "NCT01881191",
      "title": "Th Effects of Aubagio on Brain Pathology in Multiple Sclerosis Studied Over 12 Months",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "MRI",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 50,
      "start_date": "2013-06",
      "completion_date": "2015-10",
      "has_results": false,
      "last_update_posted_date": "2016-02-12",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01881191"
    },
    {
      "nct_id": "NCT04331535",
      "title": "The Genomic Medicine at VA Study",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronary Artery Disease",
        "Atrial Fibrillation",
        "Type 2 Diabetes",
        "Colorectal Cancer",
        "Breast Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Polygenic risk score (PRS)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Boston VA Research Institute, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "50 Years to 70 Years"
      },
      "enrollment_count": 1071,
      "start_date": "2020-07-17",
      "completion_date": "2027-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-02",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04331535"
    },
    {
      "nct_id": "NCT07400926",
      "title": "Observational Trial of the Updated Inserter for the Travoprost Intracameral Implant 75mcg",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Open Angle Glaucoma (OAG)",
        "Ocular Hypertension (OH)"
      ],
      "interventions": [
        {
          "name": "Travoprost",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "Glaukos Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2025-12-17",
      "completion_date": "2026-07",
      "has_results": false,
      "last_update_posted_date": "2026-02-27",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "Kenosha, Wisconsin",
      "locations": [
        {
          "city": "Kenosha",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07400926"
    },
    {
      "nct_id": "NCT04788004",
      "title": "Long-term Recovery: Longitudinal Study of Neuro-behavioral Markers of Recovery and Precipitants of Relapse",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Online survey",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Virginia Polytechnic Institute and State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 733,
      "start_date": "2022-09-08",
      "completion_date": "2026-07-14",
      "has_results": false,
      "last_update_posted_date": "2026-08-21",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04788004"
    },
    {
      "nct_id": "NCT07355491",
      "title": "Performance Evaluation of Dream OCT: AP Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glaucoma Patients",
        "Retina Patients",
        "Eyes With Corneal Abnormality",
        "Normal Healthy Eyes"
      ],
      "interventions": [
        {
          "name": "This is an observational study only, all patients are imaged on the investigational device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Intalight, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2025-12-16",
      "completion_date": "2026-05-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-29",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07355491"
    },
    {
      "nct_id": "NCT02840591",
      "title": "Ramelteon and Citicoline for Delirium",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Delirium"
      ],
      "interventions": [
        {
          "name": "Ramelteon",
          "type": "DRUG"
        },
        {
          "name": "Citicoline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "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": "2016-07",
      "completion_date": "2017-11",
      "has_results": false,
      "last_update_posted_date": "2017-11-09",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02840591"
    },
    {
      "nct_id": "NCT00810888",
      "title": "The Spot Sign for Predicting and Treating ICH Growth Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Intracerebral Hemorrhage"
      ],
      "interventions": [
        {
          "name": "recombinant activated factor VII",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Cincinnati",
      "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": 92,
      "start_date": "2010-11",
      "completion_date": "2016-04",
      "has_results": true,
      "last_update_posted_date": "2018-03-16",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • San Diego, California • Boston, Massachusetts + 5 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00810888"
    },
    {
      "nct_id": "NCT01262040",
      "title": "Narrow Band Imaging (NBI): A Novel Imaging Modality in Minimally Invasive",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Endometrial Cancer",
        "Fallopian Tube Cancer",
        "Ovarian Cancer",
        "Peritoneal Cancer",
        "Gastrointestinal Carcinoma",
        "Pancreatic Carcinoma",
        "Lung Cancer",
        "Esophageal Carcinoma"
      ],
      "interventions": [
        {
          "name": "Narrow Band Imaging (NBI)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 154,
      "start_date": "2010-12-14",
      "completion_date": "2018-10-29",
      "has_results": false,
      "last_update_posted_date": "2018-11-07",
      "last_synced_at": "2026-11-02T20:25:58.717Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01262040"
    }
  ]
}