{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention-retrospective+study&page=2",
    "query": {
      "intervention": "No intervention-retrospective study",
      "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=No+intervention-retrospective+study&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T22:21:05.580Z",
  "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": "NCT04971694",
      "title": "Impact of Steroid, Diuretic, and Fluid Use on BPD Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "BPD - Bronchopulmonary Dysplasia"
      ],
      "interventions": [
        {
          "name": "No interventions or procedures",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Pediatrix",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 175,
      "start_date": "2021-08-30",
      "completion_date": "2024-07-06",
      "has_results": false,
      "last_update_posted_date": "2024-11-19",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04971694"
    },
    {
      "nct_id": "NCT00321945",
      "title": "A Retrospective Analysis of the Use of ACE-inhibitors and Angiotensin Receptor Blockers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation",
        "Atrial Flutter"
      ],
      "interventions": [
        {
          "name": "ACE-Inhibitors and Angiotensin Receptor Blockers",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 546,
      "start_date": "2005-12",
      "completion_date": "2009-10",
      "has_results": false,
      "last_update_posted_date": "2013-09-27",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Decatur, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00321945"
    },
    {
      "nct_id": "NCT02181257",
      "title": "Extracorporeal Photopheresis for Medicare Recipients of Lung Allografts",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Bronchiolitis Obliterans Syndrome (BOS)"
      ],
      "interventions": [
        {
          "name": "Extracorporeal Photopheresis (ECP)",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "No intervention in the SOC / Retrospective Chart review.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT",
        "OTHER"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 280,
      "start_date": "2015-01",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-04-06",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 22,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • La Jolla, California + 18 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Gainsville",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02181257"
    },
    {
      "nct_id": "NCT05482737",
      "title": "Clinical Impact of Red Cell Storage Age",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "RBC Transfusions"
      ],
      "interventions": [
        {
          "name": "no intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 33000,
      "start_date": "2019-07-01",
      "completion_date": "2024-08-30",
      "has_results": false,
      "last_update_posted_date": "2024-10-03",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05482737"
    },
    {
      "nct_id": "NCT03424213",
      "title": "Race-related Alternative Splicing: Novel Targets in Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "No interventions - retrospective data collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 169,
      "start_date": "2018-01-30",
      "completion_date": "2021-07-14",
      "has_results": false,
      "last_update_posted_date": "2022-02-02",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03424213"
    },
    {
      "nct_id": "NCT02266251",
      "title": "Optimizing Health Outcomes in Patients With Symptomatic Aortic Valve Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Aortic Valve Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 273365,
      "start_date": "2014-05",
      "completion_date": "2017-05-30",
      "has_results": false,
      "last_update_posted_date": "2017-10-13",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02266251"
    },
    {
      "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": "2026-09-29T22:21:05.580Z",
      "location_count": 1,
      "location_summary": "Cambridge, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06172751"
    },
    {
      "nct_id": "NCT07793994",
      "title": "Pedi-STAR: Surface Target Antibody-drug Conjugate (ADC) Antigen Expression in Relapsed/Refractory Pediatric Solid and CNS Tumors",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "CNS Tumor",
        "Solid Tumor",
        "Relapsed Cancer",
        "Refractory Cancer",
        "Pediatric Cancer"
      ],
      "interventions": [
        {
          "name": "Bulk RNA Sequencing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Immunohistochemistry (IHC)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Dana-Farber Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "Up to 30 Years"
      },
      "enrollment_count": 130,
      "start_date": "2026-09",
      "completion_date": "2030-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-31",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07793994"
    },
    {
      "nct_id": "NCT06741514",
      "title": "A Study of Precice Intramedullary Limb Lengthening System (IMLL) Limb Lengthening Procedures",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Limb Length Discrepancy"
      ],
      "interventions": [
        {
          "name": "Precice IMLL",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "NuVasive",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "2024-03-25",
      "completion_date": "2026-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-12-18",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 2,
      "location_summary": "West Palm Beach, Florida • Columbus, Ohio",
      "locations": [
        {
          "city": "West Palm Beach",
          "state": "Florida"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06741514"
    },
    {
      "nct_id": "NCT03473249",
      "title": "Effectiveness of Contrast-Enhanced Ultrasound",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Abdominal Injuries",
        "Physical Abuse",
        "Accidental Fall",
        "Motor Vehicle Injury"
      ],
      "interventions": [
        {
          "name": "Contrast-Enhanced Ultrasound using Lumason",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "7 Years",
        "sex": "ALL",
        "summary": "0 Years to 7 Years"
      },
      "enrollment_count": 120,
      "start_date": "2018-05-09",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2025-12-24",
      "last_synced_at": "2026-09-29T22:21:05.580Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03473249"
    }
  ]
}