{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=3",
    "query": {
      "intervention": "Retrospective study",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 1213,
    "total_pages": 122,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-26T18:10:02.557Z",
  "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": "NCT03797495",
      "title": "Study of Individuals Affected With Hypoplasminogenemia",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Plasminogen Deficiency"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Indiana Hemophilia &Thrombosis Center, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "2018-12-18",
      "completion_date": "2029-11-26",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 13,
      "location_summary": "Birmingham, Alabama • Chicago, Illinois • Indianapolis, Indiana + 10 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "East Setauket",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03797495"
    },
    {
      "nct_id": "NCT07118306",
      "title": "COPD Exacerbation Follow Up",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COPD (Chronic Obstructive Pulmonary Disease)"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Viz.ai, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 485,
      "start_date": "2026-02-27",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-09-02",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 5,
      "location_summary": "Park Ridge, Illinois • Cherry Hill, New Jersey • Philadelphia, Pennsylvania + 2 more",
      "locations": [
        {
          "city": "Park Ridge",
          "state": "Illinois"
        },
        {
          "city": "Cherry Hill",
          "state": "New Jersey"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Falls Church",
          "state": "Virginia"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07118306"
    },
    {
      "nct_id": "NCT05912751",
      "title": "Acute Responses of Postural Alignment, Kinematic Synergy, and Intermuscular Coherence to Postural Muscle Facilitation (Retrospective)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Posture",
        "Musculoskeletal Equilibrium"
      ],
      "interventions": [
        {
          "name": "Exercise Then Foam Roll",
          "type": "OTHER"
        },
        {
          "name": "Foam Roll Then Exercise",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Radford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 10,
      "start_date": "2021-08-10",
      "completion_date": "2022-04-14",
      "has_results": false,
      "last_update_posted_date": "2023-06-22",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05912751"
    },
    {
      "nct_id": "NCT04275557",
      "title": "Using Radiogenomics to Predict Malignant Potential of Intraductal Papillary Mucinous Neoplasms of the Pancreas",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pancreatic Cancer",
        "Pancreatic Cyst"
      ],
      "interventions": [
        {
          "name": "Blood Sample collection",
          "type": "OTHER"
        },
        {
          "name": "Tissue sample collection",
          "type": "OTHER"
        },
        {
          "name": "Data collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1274,
      "start_date": "2020-02-18",
      "completion_date": "2026-11",
      "has_results": false,
      "last_update_posted_date": "2026-09-23",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 3,
      "location_summary": "Lakewood Rch, Florida • Miami, Florida • Tampa, Florida",
      "locations": [
        {
          "city": "Lakewood Rch",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04275557"
    },
    {
      "nct_id": "NCT00270712",
      "title": "A Study of Factors That Affect Long-Term Kidney Transplant Function",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kidney Transplant"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 3175,
      "start_date": "2005-10",
      "completion_date": "2018-12-31",
      "has_results": false,
      "last_update_posted_date": "2019-11-01",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 5,
      "location_summary": "Birmingham, Alabama • Iowa City, Iowa • Minneapolis, Minnesota + 1 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00270712"
    },
    {
      "nct_id": "NCT06019481",
      "title": "A Natural History Study in Pediatric Participants With Hearing Loss Due to OTOF, GJB2, or GJB2/GJB6 Mutations",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Congenital Hearing Loss Secondary to Biallelic Mutations in the Otoferlin Gene (OTOF)",
        "Biallelic Mutations in the Gap Junction Beta 2 (GJB2) Gene",
        "Digenic Mutations in GJB2/Gap Junction Beta 6 (GJB6) Genes"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Regeneron Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "7 Years",
        "sex": "ALL",
        "summary": "Up to 7 Years"
      },
      "enrollment_count": 0,
      "start_date": "2025-06-30",
      "completion_date": "2030-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-05-15",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 2,
      "location_summary": "Phoenix, Arizona • Columbus, Ohio",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06019481"
    },
    {
      "nct_id": "NCT00352209",
      "title": "Cardiomyopathy Following Stem Cell Transplantation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiomyopathy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institutes of Health Clinical Center (CC)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": null,
      "start_date": "2006-05-02",
      "completion_date": "2007-05-16",
      "has_results": false,
      "last_update_posted_date": "2017-07-02",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 2,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00352209"
    },
    {
      "nct_id": "NCT03327883",
      "title": "Retrospective Review of FDG PET MRI Management of Patients With Muscle Invasive Bladder Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Bladder Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2017-10-26",
      "completion_date": "2018-10-16",
      "has_results": false,
      "last_update_posted_date": "2021-07-09",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03327883"
    },
    {
      "nct_id": "NCT03111745",
      "title": "Retrospective Study of Viral Reactivation Across All Bone Marrow Transplant Protocols Since 2010",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Viral Infections"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "4 Years to 85 Years"
      },
      "enrollment_count": 730,
      "start_date": "2017-04-13",
      "completion_date": "2020-02-18",
      "has_results": false,
      "last_update_posted_date": "2026-10-08",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03111745"
    },
    {
      "nct_id": "NCT05278442",
      "title": "Evaluation of the Accuracy & Safety of the LaserArcs Nomogram",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cataract",
        "Astigmatism"
      ],
      "interventions": [
        {
          "name": "LaserArc",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Research Insight LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2022-04-01",
      "completion_date": "2022-08-08",
      "has_results": false,
      "last_update_posted_date": "2022-11-01",
      "last_synced_at": "2026-10-26T18:10:02.557Z",
      "location_count": 1,
      "location_summary": "Belleville, Illinois",
      "locations": [
        {
          "city": "Belleville",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05278442"
    }
  ]
}