{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention-retrospective+study",
    "query": {
      "intervention": "No intervention-retrospective study"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 113,
    "total_pages": 12,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=No+intervention-retrospective+study&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-13T06:18:17.718Z",
  "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": "NCT01754272",
      "title": "A Non-Interventional Follow-Up to the VELOUR Study - Translational Research",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Metastatic Colorectal Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "KU Leuven",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1226,
      "start_date": "2012-01",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2012-12-21",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01754272"
    },
    {
      "nct_id": "NCT06018753",
      "title": "Umbrella Study for Analysis of Data Related to Patients With Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Tempus AI",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 77,
      "start_date": "2023-12-06",
      "completion_date": "2025-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-06-29",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 10,
      "location_summary": "Fountain Valley, California • Jacksonville, Florida • Honolulu, Hawaii + 7 more",
      "locations": [
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Rolling Meadows",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06018753"
    },
    {
      "nct_id": "NCT04949230",
      "title": "A Retrospective Study of COVID-19 Treatments",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19",
        "COVID-19 Pneumonia",
        "COVID-19 Respiratory Infection",
        "COVID-19 Acute Bronchitis",
        "COVID-19 Acute Respiratory Distress Syndrome",
        "COVID-19 Lower Respiratory Infection",
        "SARS-CoV2 Infection",
        "SARS-CoV-2 Acute Respiratory Disease"
      ],
      "interventions": [
        {
          "name": "No Intervention Used",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "ProgenaBiome",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Months",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Months and older"
      },
      "enrollment_count": 300,
      "start_date": "2021-02-19",
      "completion_date": "2024-02-15",
      "has_results": false,
      "last_update_posted_date": "2024-02-29",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 1,
      "location_summary": "Ventura, California",
      "locations": [
        {
          "city": "Ventura",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04949230"
    },
    {
      "nct_id": "NCT05631821",
      "title": "3-D Correction of Adolescent Idiopathic Scoliosis (AIS) With Differential Metals",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Juvenile and Adolescent Idiopathic Scoliosis"
      ],
      "interventions": [
        {
          "name": "differential rod bending with rod contours (MESA Spinal System)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Rush University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "10 Years to 18 Years"
      },
      "enrollment_count": 20,
      "start_date": "2014-10",
      "completion_date": "2022-11",
      "has_results": false,
      "last_update_posted_date": "2022-12-02",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05631821"
    },
    {
      "nct_id": "NCT03052153",
      "title": "Intraoperative Echocardiographic Evaluation of Pulmonary Vein Velocities and Outcomes in Lung Transplantation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Transplant Failure"
      ],
      "interventions": [
        {
          "name": "No investigational intervention performed for this study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2017-03-17",
      "completion_date": "2021-02-04",
      "has_results": false,
      "last_update_posted_date": "2021-09-09",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03052153"
    },
    {
      "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": "2026-09-13T06:18:17.718Z",
      "location_count": 1,
      "location_summary": "Titusville, New Jersey",
      "locations": [
        {
          "city": "Titusville",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04113551"
    },
    {
      "nct_id": "NCT07282067",
      "title": "Orthofix PhysioStim PEMF Ankle Fusion Retrospective",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ankle Fusion",
        "Hindfoot Arthrodesis",
        "Ankle Arthrodesis",
        "Tibiotalar Arthrodesis"
      ],
      "interventions": [
        {
          "name": "Pulsed electromagnetic field (PEMF) stimulation",
          "type": "DEVICE"
        },
        {
          "name": "Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Orthofix Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "23 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "23 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2025-01-23",
      "completion_date": "2026-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • Scottsdale, Arizona • Pismo Beach, California + 4 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Pismo Beach",
          "state": "California"
        },
        {
          "city": "Des Moines",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07282067"
    },
    {
      "nct_id": "NCT07529366",
      "title": "Pharmacist-Led Continuous Glucose Monitoring for Prediabetes",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prediabetes"
      ],
      "interventions": [
        {
          "name": "Dexcom Stelo CGM",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 40,
      "start_date": "2026-09-01",
      "completion_date": "2027-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-10",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 2,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07529366"
    },
    {
      "nct_id": "NCT04291651",
      "title": "UCSF PANC Cyst Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pancreatic Cyst",
        "Pancreatic Neoplasms",
        "Pancreatic Cancer",
        "Pancreatic Diseases",
        "Pancreatic Intraductal Papillary Mucinous Neoplasm",
        "Intraductal Papillary Mucinous Neoplasm",
        "Pancreatic Ductal Adenocarcinoma",
        "Mucinous Cyst"
      ],
      "interventions": [
        {
          "name": "Survey",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4000,
      "start_date": "2019-10-08",
      "completion_date": "2030-01-01",
      "has_results": false,
      "last_update_posted_date": "2025-09-18",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04291651"
    },
    {
      "nct_id": "NCT05244096",
      "title": "COVID-19 & Psychiatry: A Retrospective Chart Review",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 65000,
      "start_date": "2022-01-12",
      "completion_date": "2025-03-30",
      "has_results": false,
      "last_update_posted_date": "2024-04-05",
      "last_synced_at": "2026-09-13T06:18:17.718Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05244096"
    }
  ]
}