{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+data+analysis&page=4",
    "query": {
      "intervention": "Retrospective data analysis",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 79,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+data+analysis&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+data+analysis&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-22T03:06:26.215Z",
  "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": "NCT05224687",
      "title": "Utility Assessment of a Pharmacy-to-Dose Daptomycin",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Antibiotics Causing Adverse Effects in Therapeutic Use"
      ],
      "interventions": [
        {
          "name": "Retroactive review of patient data of those receiving a dose of daptomycin",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Methodist Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": null,
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "2021-12-15",
      "completion_date": "2022-12-15",
      "has_results": false,
      "last_update_posted_date": "2022-02-04",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05224687"
    },
    {
      "nct_id": "NCT06283238",
      "title": "Biobanking Upper Gastrointestinal Tumors to Evaluate Response (BURGER With BACON)",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "GastroEsophageal Cancer"
      ],
      "interventions": [
        {
          "name": "Immune checkpoint inhibitor (ICI) or chemotherapy alone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Duke University",
      "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": "2025-04-16",
      "completion_date": "2027-03-25",
      "has_results": false,
      "last_update_posted_date": "2026-01-29",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06283238"
    },
    {
      "nct_id": "NCT04113551",
      "title": "A Study of Label Compliance for Attention Deficit/Hyperactivity Disorder (ADHD) Medications in Japan",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Attention Deficit Disorder With Hyperactivity"
      ],
      "interventions": [
        {
          "name": "MPH (Concerta)",
          "type": "DRUG"
        },
        {
          "name": "MPH (Ritalin)",
          "type": "DRUG"
        },
        {
          "name": "Atomoxetine (ATO)",
          "type": "DRUG"
        },
        {
          "name": "Guanfacine (GFC)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 17418,
      "start_date": "2019-10-01",
      "completion_date": "2020-01-10",
      "has_results": false,
      "last_update_posted_date": "2025-04-27",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "Titusville, New Jersey",
      "locations": [
        {
          "city": "Titusville",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04113551"
    },
    {
      "nct_id": "NCT05477056",
      "title": "Quality Improvement PrecivityAD Clinician Survey (QUIP I)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alzheimer Disease",
        "Mild Cognitive Impairment",
        "Dementia",
        "Cognitive Decline"
      ],
      "interventions": [
        {
          "name": "PrecivityAD blood test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "C2N Diagnostics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 366,
      "start_date": "2021-03-01",
      "completion_date": "2022-10-06",
      "has_results": false,
      "last_update_posted_date": "2025-02-20",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05477056"
    },
    {
      "nct_id": "NCT04930328",
      "title": "Retrospective Real World Oxbryta® Data Collection and Analysis Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Oxbryta® (voxelotor) 500-mg Tablets",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "0 Years and older"
      },
      "enrollment_count": 216,
      "start_date": "2021-03-20",
      "completion_date": "2022-02-25",
      "has_results": false,
      "last_update_posted_date": "2024-03-06",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 12,
      "location_summary": "Farmington, Connecticut • Boston, Massachusetts • Detroit, Michigan + 6 more",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04930328"
    },
    {
      "nct_id": "NCT05385718",
      "title": "Ezra Faster Scan Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Medical Oncology",
        "Cancer",
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Magnetic Resonance Imaging",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ezra AI, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 694,
      "start_date": "2022-06-01",
      "completion_date": "2025-02-24",
      "has_results": false,
      "last_update_posted_date": "2025-03-03",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 5,
      "location_summary": "Beverly Hills, California • Chino Hills, California • Irvine, California + 2 more",
      "locations": [
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Chino Hills",
          "state": "California"
        },
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Los Gatos",
          "state": "California"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05385718"
    },
    {
      "nct_id": "NCT04979780",
      "title": "Observational Studies in Cancer Associated Thrombosis for Rivaroxaban - United States Cohort",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Treatment of Venous Thromboembolism in Cancer Patients",
        "Prophylaxis of Recurrent Venous Thromboembolism in Cancer Patients"
      ],
      "interventions": [
        {
          "name": "Rivaroxaban (Xarelto, BAY59-7939)",
          "type": "DRUG"
        },
        {
          "name": "Low molecular weight heparin (LMWH)",
          "type": "DRUG"
        },
        {
          "name": "Direct Oral Anticoagulants (DOAC)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3708,
      "start_date": "2021-07-20",
      "completion_date": "2022-03-31",
      "has_results": false,
      "last_update_posted_date": "2024-10-31",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "Multiple Locations, Connecticut",
      "locations": [
        {
          "city": "Multiple Locations",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04979780"
    },
    {
      "nct_id": "NCT06495164",
      "title": "A Real-life Study to Understand the Use and Effects of Palbociclib in US Patients With Breast Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Malignant Neoplasm of Breast"
      ],
      "interventions": [
        {
          "name": "Palbociclib",
          "type": "DRUG"
        },
        {
          "name": "Aromatase inhibitor",
          "type": "DRUG"
        },
        {
          "name": "Ribociclib",
          "type": "DRUG"
        },
        {
          "name": "Abemaciclib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1,
      "start_date": "2024-06-24",
      "completion_date": "2026-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-11-25",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06495164"
    },
    {
      "nct_id": "NCT01536457",
      "title": "Reflux Disease Therapy in the Management of Childhood Asthma-data Entry and Analysis Only",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma",
        "Gastroesophageal Reflux Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Children's Center for Digestive Health Care",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "4 Years to 11 Years"
      },
      "enrollment_count": 59,
      "start_date": "2011-07",
      "completion_date": "2013-01",
      "has_results": false,
      "last_update_posted_date": "2015-02-11",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01536457"
    },
    {
      "nct_id": "NCT03529825",
      "title": "Rifaximin for Infection Prophylaxis in Hematopoietic Stem Cell Transplantation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Microbial Colonization"
      ],
      "interventions": [
        {
          "name": "Rifaximin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "2 Years to 21 Years"
      },
      "enrollment_count": 26,
      "start_date": "2018-07-18",
      "completion_date": "2021-09-10",
      "has_results": false,
      "last_update_posted_date": "2021-10-12",
      "last_synced_at": "2026-10-22T03:06:26.215Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03529825"
    }
  ]
}