{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=17",
    "query": {
      "intervention": "Retrospective study",
      "page": 17
    },
    "page_size": 10
  },
  "pagination": {
    "page": 17,
    "page_size": 10,
    "total_count": 1214,
    "total_pages": 122,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=18&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=16&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-30T17:24:26.007Z",
  "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": "NCT04847531",
      "title": "REVEAL-CKD: Prevalence and Consequences of Undiagnosed Chronic Kidney Disease",
      "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": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1006361,
      "start_date": "2020-12-15",
      "completion_date": "2023-11-13",
      "has_results": false,
      "last_update_posted_date": "2024-12-16",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 3,
      "location_summary": "Louisville, Kentucky • Cambridge, Massachusetts • Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04847531"
    },
    {
      "nct_id": "NCT06355934",
      "title": "OverTTuRe: Characteristics, Treatment Patterns and Outcomes of Patients With ATTR Amyloidosis",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "ATTR Amyloidosis"
      ],
      "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": 52121,
      "start_date": "2023-08-21",
      "completion_date": "2026-11-02",
      "has_results": false,
      "last_update_posted_date": "2026-09-09",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 1,
      "location_summary": "Eden Prairie, Minnesota",
      "locations": [
        {
          "city": "Eden Prairie",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06355934"
    },
    {
      "nct_id": "NCT03999281",
      "title": "Clinical Trial to Examine Effectiveness of a Human Allograft for Treatment of DFU and VLU",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Determine Effectiveness of Theraskin in the Treatment of DFU and VLU"
      ],
      "interventions": [
        {
          "name": "Human Allograft (Theraskin)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Solsys Medical LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 188,
      "start_date": "2003-03-20",
      "completion_date": "2009-09-20",
      "has_results": false,
      "last_update_posted_date": "2019-06-28",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 1,
      "location_summary": "Fairfax, Virginia",
      "locations": [
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03999281"
    },
    {
      "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": "2026-10-30T17:24:26.007Z",
      "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": "NCT05419102",
      "title": "Retrospective Study of Implants With Peri-implantitis Surgically Treated Using Enamel Matrix Derivative (EMD)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Determination of Beneficial Effect of Using Enamel Matrix Derivative During Implant Treatment"
      ],
      "interventions": [
        {
          "name": "peri-implantitis surgery with enamel matrix derivative",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "North Dallas Dental Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 34,
      "start_date": "2022-04-01",
      "completion_date": "2022-06-06",
      "has_results": false,
      "last_update_posted_date": "2022-06-15",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05419102"
    },
    {
      "nct_id": "NCT05826639",
      "title": "A Study of Endobiliary Radiofrequency Ablation in Malignant Biliary Obstructions",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Biliary Stricture"
      ],
      "interventions": [
        {
          "name": "Temperature-sensitive radiofrequency ablation",
          "type": "PROCEDURE"
        },
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 176,
      "start_date": "2023-04-13",
      "completion_date": "2024-11-18",
      "has_results": false,
      "last_update_posted_date": "2025-02-27",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05826639"
    },
    {
      "nct_id": "NCT02589847",
      "title": "Microbiota Restoration Therapy for Recurrent Clostridium Difficile Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Clostridium Difficile Infection"
      ],
      "interventions": [
        {
          "name": "RBX2660",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Standard of Care Antibiotics",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Rebiotix Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 272,
      "start_date": "2015-10",
      "completion_date": "2019-03",
      "has_results": true,
      "last_update_posted_date": "2021-03-26",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 28,
      "location_summary": "Phoenix, Arizona • North Little Rock, Arkansas • Sacramento, California + 25 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "North Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Bay Pines",
          "state": "Florida"
        },
        {
          "city": "Coral Springs",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02589847"
    },
    {
      "nct_id": "NCT07210125",
      "title": "Implementation and Deliver of Lenacapavir for PrEP in a Community Pharmacy Setting",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "Lenacapavir long-acting",
          "type": "DRUG"
        },
        {
          "name": "Standard of Care (SOC)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Kelley-Ross & Associates, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 75,
      "start_date": "2025-09-16",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-02",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07210125"
    },
    {
      "nct_id": "NCT04406467",
      "title": "Retrospective Review of Xen Gel Stent Implantation With Open vs. Closed Conjunctiva Approach",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glaucoma, Open-Angle"
      ],
      "interventions": [
        {
          "name": "Xen Gel Stent",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 137,
      "start_date": "2017-11-19",
      "completion_date": "2020-08-26",
      "has_results": false,
      "last_update_posted_date": "2023-05-25",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04406467"
    },
    {
      "nct_id": "NCT02443571",
      "title": "Retrospective Observational Study Investigating Fluciclovine (18F) (FACBC)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostatic Neoplasms"
      ],
      "interventions": [
        {
          "name": "Fluciclovine (18F)",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Blue Earth Diagnostics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 714,
      "start_date": "2015-01",
      "completion_date": "2015-06",
      "has_results": true,
      "last_update_posted_date": "2018-12-19",
      "last_synced_at": "2026-10-30T17:24:26.007Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02443571"
    }
  ]
}