{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Trial&page=2",
    "query": {
      "intervention": "Observational Trial",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Trial&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T07:47:44.687Z",
  "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": "NCT00916474",
      "title": "Virology Follow up Study in Subjects Previously Treated With Telaprevir",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "telaprevir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vertex Pharmaceuticals Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 408,
      "start_date": "2009-06",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2014-02-27",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 25,
      "location_summary": "Birmingham, Alabama • Coronado, California • Los Angeles, California + 22 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Coronado",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00916474"
    },
    {
      "nct_id": "NCT06014541",
      "title": "Observational Study to Characterize Biomarkers and Disease Progression in Participants With Methyl CpG Binding Protein 2 (MECP2) Duplication Syndrome",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Methyl CpG Binding Protein 2 (MECP2) Duplication Syndrome"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Ionis Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "1 Month to 65 Years · Male only"
      },
      "enrollment_count": 29,
      "start_date": "2023-10-03",
      "completion_date": "2025-10-07",
      "has_results": false,
      "last_update_posted_date": "2026-04-09",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 5,
      "location_summary": "San Diego, California • Saint Paul, Minnesota • Philadelphia, Pennsylvania + 2 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06014541"
    },
    {
      "nct_id": "NCT07717866",
      "title": "Trifecta Research Study",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "PTSD - Post Traumatic Stress Disorder",
        "Cognitive Dysfunction",
        "Brain Injury",
        "Depression - Major Depressive Disorder",
        "Suicidal Ideation"
      ],
      "interventions": [
        {
          "name": "Magnetic e-Resonance Therapy (MeRT)",
          "type": "DEVICE"
        },
        {
          "name": "Ibogaine Hydrochloride with Magnesium Sulfate",
          "type": "DRUG"
        },
        {
          "name": "5-methoxy-N,N-dimethyltryptamine",
          "type": "DRUG"
        },
        {
          "name": "Physiological Supplementation",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "Axial Therapeutic Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 52,
      "start_date": "2022-08-01",
      "completion_date": "2026-11",
      "has_results": false,
      "last_update_posted_date": "2026-07-21",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 1,
      "location_summary": "Northridge, California",
      "locations": [
        {
          "city": "Northridge",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07717866"
    },
    {
      "nct_id": "NCT05255445",
      "title": "Red Blood Cell - IMProving trAnsfusions for Chronically Transfused Recipients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease",
        "Thalassemia",
        "Pediatric Cancer"
      ],
      "interventions": [
        {
          "name": "Red Blood Cell (RBC) Transfusion",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Westat",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 157,
      "start_date": "2022-03-16",
      "completion_date": "2024-03-31",
      "has_results": false,
      "last_update_posted_date": "2024-05-17",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 9,
      "location_summary": "Oakland, California • San Francisco, California • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05255445"
    },
    {
      "nct_id": "NCT04370002",
      "title": "Sensor-based Characterization of Depression",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Unipolar Depression"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Massachusetts General Hospital",
      "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": 100,
      "start_date": "2020-01-28",
      "completion_date": "2024-11-30",
      "has_results": false,
      "last_update_posted_date": "2023-11-03",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04370002"
    },
    {
      "nct_id": "NCT01200602",
      "title": "Megestrol Acetate in Treating Weight Loss or Anorexia in Young Patients With Malignancies Who Are Undergoing Radiation Therapy and/or Chemotherapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Anorexia",
        "Weight Changes"
      ],
      "interventions": [
        {
          "name": "megestrol acetate",
          "type": "DRUG"
        },
        {
          "name": "clinical observation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 1,
      "start_date": "2011-03",
      "completion_date": "2012-01",
      "has_results": true,
      "last_update_posted_date": "2015-11-25",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01200602"
    },
    {
      "nct_id": "NCT05978531",
      "title": "Observational Study of Persistence on Bafiertam Treatment in Routine Clinical Practice",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Relapsing Remitting Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Monomethyl Fumarate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Banner Life Sciences LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2023-08-17",
      "completion_date": "2025-02-24",
      "has_results": false,
      "last_update_posted_date": "2025-03-06",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 9,
      "location_summary": "Gilbert, Arizona • Phoenix, Arizona • Scottsdale, Arizona + 5 more",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "West Hollywood",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05978531"
    },
    {
      "nct_id": "NCT01137721",
      "title": "State Of The Art Functional Imaging In Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Anemia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "5 Years to 19 Years"
      },
      "enrollment_count": 38,
      "start_date": "2010-09",
      "completion_date": "2016-06",
      "has_results": false,
      "last_update_posted_date": "2018-08-23",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01137721"
    },
    {
      "nct_id": "NCT05045963",
      "title": "Impact of Aminoglycosides in Hypotensive Septic Oncology Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hematopoietic and Lymphoid Cell Neoplasm",
        "Malignant Solid Neoplasm",
        "Septicemia"
      ],
      "interventions": [
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 232,
      "start_date": "2021-01-04",
      "completion_date": "2026-02-13",
      "has_results": false,
      "last_update_posted_date": "2026-02-20",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05045963"
    },
    {
      "nct_id": "NCT01625221",
      "title": "Feasibility Study of the Magnetic Anal Sphincter (FENIX System)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fecal Incontinence"
      ],
      "interventions": [
        {
          "name": "Magnetic Anal Sphincter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Torax Medical Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "84 Years",
        "sex": "ALL",
        "summary": "19 Years to 84 Years"
      },
      "enrollment_count": 35,
      "start_date": "2008-12",
      "completion_date": "2016-03",
      "has_results": true,
      "last_update_posted_date": "2018-01-03",
      "last_synced_at": "2026-09-24T07:47:44.687Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Spokane, Washington",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01625221"
    }
  ]
}