{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+data+collection",
    "query": {
      "intervention": "Retrospective data collection"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 150,
    "total_pages": 15,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+data+collection&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T17:40:15.725Z",
  "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": "NCT04881448",
      "title": "A Study to Examine Past Estimated Glomerular Filtration Rate (eGFR) Slope as a Risk Marker for Rapid Kidney Function Decline in People With Chronic Kidney Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "collection of serum/capillary creatinine values",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 223,
      "start_date": "2021-09-16",
      "completion_date": "2022-07-15",
      "has_results": true,
      "last_update_posted_date": "2023-08-04",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 19,
      "location_summary": "Huntsville, Alabama • Victorville, California • Bloomfield, Connecticut + 14 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Victorville",
          "state": "California"
        },
        {
          "city": "Victorville",
          "state": "California"
        },
        {
          "city": "Bloomfield",
          "state": "Connecticut"
        },
        {
          "city": "Middlebury",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04881448"
    },
    {
      "nct_id": "NCT07147517",
      "title": "Preparedness Through Respiratory Virus Epidemiology and Community Engagement",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Infection Virus",
        "COVID -19",
        "RSV",
        "FLU"
      ],
      "interventions": [
        {
          "name": "Component A0",
          "type": "OTHER"
        },
        {
          "name": "Component A1",
          "type": "OTHER"
        },
        {
          "name": "Component A2",
          "type": "OTHER"
        },
        {
          "name": "Component B",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 25000,
      "start_date": "2025-10-08",
      "completion_date": "2030-10-30",
      "has_results": false,
      "last_update_posted_date": "2025-11-04",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 2,
      "location_summary": "La Jolla, California • San Ysidro, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "San Ysidro",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07147517"
    },
    {
      "nct_id": "NCT05653102",
      "title": "A Post-Market Domestic (US) and International Data Collection to Assess the Truliant Knee System",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Knee Arthroplasty, Total"
      ],
      "interventions": [
        {
          "name": "Truliant Total Knee System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Exactech",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1000,
      "start_date": "2019-01-23",
      "completion_date": "2035-07-31",
      "has_results": false,
      "last_update_posted_date": "2024-06-18",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 5,
      "location_summary": "Aurora, Colorado • DeLand, Florida • Las Vegas, Nevada + 2 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        },
        {
          "city": "Akron",
          "state": "Ohio"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05653102"
    },
    {
      "nct_id": "NCT03132428",
      "title": "Registry to Evaluate INOmax in Newborn Babies With Pulmonary Hypertension",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pulmonary Hypertension of Newborn"
      ],
      "interventions": [
        {
          "name": "INOmax",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mallinckrodt",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "27 Weeks",
        "maximum_age": "40 Weeks",
        "sex": "ALL",
        "summary": "27 Weeks to 40 Weeks"
      },
      "enrollment_count": 140,
      "start_date": "2017-07-27",
      "completion_date": "2020-02-11",
      "has_results": false,
      "last_update_posted_date": "2020-06-18",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 30,
      "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Loma Linda, California + 27 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03132428"
    },
    {
      "nct_id": "NCT05865301",
      "title": "Outcomes in Pediatric and Young Adult B-Cell Malignancies After Commercially Available Immunotherapy",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lymphoid Leukemia"
      ],
      "interventions": [
        {
          "name": "Questionnaire for patients receiving therapy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "26 Years",
        "sex": "ALL",
        "summary": "Up to 26 Years"
      },
      "enrollment_count": 500,
      "start_date": "2023-06-29",
      "completion_date": "2038-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 22,
      "location_summary": "Tucson, Arizona • Duarte, California • Palo Alto, California + 19 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "New Castle",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05865301"
    },
    {
      "nct_id": "NCT04857528",
      "title": "Detecting HPV DNA in Anal and Cervical Cancers",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cervical Cancer",
        "Anal Cancer",
        "HPV-Related Anal Squamous Cell Carcinoma",
        "HPV-Related Cervical Carcinoma",
        "HPV-Related Carcinoma",
        "Uterine Cervical Cancer"
      ],
      "interventions": [
        {
          "name": "Radiation Treatment With or Without Chemotherapy",
          "type": "RADIATION"
        },
        {
          "name": "Blood Sample Collection",
          "type": "OTHER"
        },
        {
          "name": "HPV Genotyping (HPV DNA Test)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Testing Archival Tumor Tissue",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Physical Exam",
          "type": "OTHER"
        },
        {
          "name": "Positron Emission Tomography Scan (PET Scan)/ Computed Tomography Scan (CT Scan)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2020-10-06",
      "completion_date": "2027-11-15",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 2,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04857528"
    },
    {
      "nct_id": "NCT05505136",
      "title": "Mobile Cardiac Telemetry and Advanced Multi-Parameter Monitoring in PatientS Wearing a Novel Device With Biometric Based Medications Changes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiac Arrhythmia"
      ],
      "interventions": [
        {
          "name": "Arrhythmia Management System (AMS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Zoll Medical Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 62,
      "start_date": "2022-08-30",
      "completion_date": "2023-05-15",
      "has_results": false,
      "last_update_posted_date": "2023-06-18",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 8,
      "location_summary": "Ocala, Florida • Saint Augustine, Florida • Jackson, Mississippi + 5 more",
      "locations": [
        {
          "city": "Ocala",
          "state": "Florida"
        },
        {
          "city": "Saint Augustine",
          "state": "Florida"
        },
        {
          "city": "Jackson",
          "state": "Mississippi"
        },
        {
          "city": "Amarillo",
          "state": "Texas"
        },
        {
          "city": "Kingwood",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05505136"
    },
    {
      "nct_id": "NCT04182607",
      "title": "Donor Outcomes Following Hand-Assisted and Robotic Living Donor Nephrectomy: a Retrospective Review",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Transplant",
        "Kidney Diseases"
      ],
      "interventions": [
        {
          "name": "kidney transplant",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Methodist Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 240,
      "start_date": "2019-11-06",
      "completion_date": "2025-11",
      "has_results": false,
      "last_update_posted_date": "2024-11-20",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04182607"
    },
    {
      "nct_id": "NCT02159742",
      "title": "Prospective Follow-up of Outcomes in Patients Receiving Photodynamic Therapy for Neoplastic Diseases",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Neoplastic Disease"
      ],
      "interventions": [
        {
          "name": "Data Collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 400,
      "start_date": "2011-07",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-08",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02159742"
    },
    {
      "nct_id": "NCT05256316",
      "title": "Risks of Bacterial and Fungal Superinfection in Patients With COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Previously admitted COVID-19 patients in intensive care units",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The University of Queensland",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 790,
      "start_date": "2022-02-14",
      "completion_date": "2022-12-04",
      "has_results": false,
      "last_update_posted_date": "2023-05-22",
      "last_synced_at": "2026-09-06T17:40:15.725Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05256316"
    }
  ]
}