{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+retrospective+data&page=2",
    "query": {
      "intervention": "Observational retrospective data",
      "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+retrospective+data&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T00:46:47.611Z",
  "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": "NCT07590973",
      "title": "Online Evaluation of the Diagnostic Accuracy of BlinkLab's Digital Assessments for Autism",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Autism",
        "Autism Spectrum Disorder",
        "Autism Spectrum Disorder (ASD)",
        "Neurodevelopmental Conditions"
      ],
      "interventions": [
        {
          "name": "BlinkLab Dx1",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Retrospective Neurodevelopmental Diagnostic Assessment",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "BEHAVIORAL"
      ],
      "sponsor": "Blinklab Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "2 Years to 11 Years"
      },
      "enrollment_count": 1000,
      "start_date": "2025-02-15",
      "completion_date": "2026-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-05-15",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 1,
      "location_summary": "Princeton, New Jersey",
      "locations": [
        {
          "city": "Princeton",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07590973"
    },
    {
      "nct_id": "NCT05650619",
      "title": "Recurrence Post-transplant Observational Study in Focal Segmental Glomerulosclerosis and Minimal Change Disease",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Focal Segmental Glomerulosclerosis",
        "Minimal Change Disease",
        "FSGS",
        "MCD"
      ],
      "interventions": [
        {
          "name": "Biospecimen collection",
          "type": "OTHER"
        },
        {
          "name": "Data collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 300,
      "start_date": "2022-12-08",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05650619"
    },
    {
      "nct_id": "NCT04079829",
      "title": "Postoperative Respiratory Abnormalities",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Failure",
        "Respiratory Arrest",
        "Respiratory Distress Syndrome",
        "Acute Respiratory Failure",
        "Acute Respiratory Failure With Hypoxia",
        "Acute Respiratory Failure With Hypercapnia",
        "Acute Respiratory Failure Post Surgical",
        "Acute Respiratory Failure Postprocedural",
        "Acute Respiratory Failure Following Trauma and Surgery",
        "Acute Respiratory Failure Requiring Reintubation",
        "Acute Respiratory Failure Post Traumatic",
        "Acute Respiratory Decompensation",
        "Shock",
        "Shock, Septic",
        "Shock, Cardiogenic",
        "Acute Cardiac Failure",
        "Multi Organ Failure",
        "Acute Kidney Failure"
      ],
      "interventions": [
        {
          "name": "Observational retrospective cohort to describe data validity; and Data reliability; and Completeness of the data",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Efficacy Care R&D Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 50000,
      "start_date": "2019-09-01",
      "completion_date": "2020-10",
      "has_results": false,
      "last_update_posted_date": "2020-06-24",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04079829"
    },
    {
      "nct_id": "NCT04034992",
      "title": "A Study on Patients With Chronic Kidney Disease (CKD) to Assess Treatment Experience and Patterns, Effect of the Treatment, Patient Outcomes and Patient Quality of Life",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "ALL",
        "summary": "18 Years to 130 Years"
      },
      "enrollment_count": 1052,
      "start_date": "2019-09-11",
      "completion_date": "2023-06-30",
      "has_results": false,
      "last_update_posted_date": "2024-03-06",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 11,
      "location_summary": "Riverside, California • San Francisco, California • Sanford, Florida + 8 more",
      "locations": [
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Sanford",
          "state": "Florida"
        },
        {
          "city": "Sebring",
          "state": "Florida"
        },
        {
          "city": "Plymouth",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04034992"
    },
    {
      "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": "2026-09-24T00:46:47.611Z",
      "location_count": 1,
      "location_summary": "Titusville, New Jersey",
      "locations": [
        {
          "city": "Titusville",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04113551"
    },
    {
      "nct_id": "NCT05180357",
      "title": "RANS. Study in Patients With Severe Eosinophilic Asthma and Nasal Polyps.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Severe Eosinophilic Asthma",
        "Nasal Polyps"
      ],
      "interventions": [
        {
          "name": "FASENRA(benralizumab)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 273,
      "start_date": "2021-11-23",
      "completion_date": "2022-10-28",
      "has_results": false,
      "last_update_posted_date": "2023-04-19",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 8,
      "location_summary": "Centennial, Colorado • Denver, Colorado • Glendale, New York + 5 more",
      "locations": [
        {
          "city": "Centennial",
          "state": "Colorado"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Glendale",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05180357"
    },
    {
      "nct_id": "NCT06172751",
      "title": "TrinetX Study of Hypereosinophilic Syndrome (HES) Without an Identifiable Non-haematological Secondary Cause",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypereosinophilic Syndrome (HES)"
      ],
      "interventions": [
        {
          "name": "no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 250,
      "start_date": "2023-12-15",
      "completion_date": "2024-04-26",
      "has_results": false,
      "last_update_posted_date": "2025-02-12",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 1,
      "location_summary": "Cambridge, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06172751"
    },
    {
      "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": "2026-09-24T00:46:47.611Z",
      "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": "NCT05224635",
      "title": "The PROspective Observational Vascular Injury Trial (PROOVIT)",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vascular Injury"
      ],
      "interventions": [
        {
          "name": "Vascular Injury",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Methodist Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 5718,
      "start_date": "2021-12-30",
      "completion_date": "2028-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-10",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05224635"
    },
    {
      "nct_id": "NCT04091984",
      "title": "The PROspera Kidney Transplant ACTIVE Rejection Assessment Registry (ProActive)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kidney Transplant Rejection"
      ],
      "interventions": [
        {
          "name": "Prospera",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Natera, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5000,
      "start_date": "2019-11-06",
      "completion_date": "2027-10-01",
      "has_results": false,
      "last_update_posted_date": "2024-08-06",
      "last_synced_at": "2026-09-24T00:46:47.611Z",
      "location_count": 55,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 45 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04091984"
    }
  ]
}