{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=24",
    "query": {
      "intervention": "Retrospective study",
      "page": 24
    },
    "page_size": 10
  },
  "pagination": {
    "page": 24,
    "page_size": 10,
    "total_count": 1214,
    "total_pages": 122,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=25&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Retrospective+study&page=23&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-31T05:11:39.889Z",
  "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": "NCT07103486",
      "title": "A Study to Evaluate the Therapeutic Benefit of Tisagenlecleucel Compared to Existing Standard of Care in German Adult Patients With Relapsed or Refractory Diffuse Large B-cell Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diffuse Large B-Cell Lymphoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 264,
      "start_date": "2021-04-01",
      "completion_date": "2023-01-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-05",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07103486"
    },
    {
      "nct_id": "NCT01770951",
      "title": "A Retrospective, Observational, Non-interventional Trial to Assess Eculizumab Treatment Effect in Patients With Atypical Hemolytic Uremic Syndrome (aHUS)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atypical Hemolytic Uremic Syndrome (aHUS)"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Alexion Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 30,
      "start_date": "2009-08-31",
      "completion_date": "2010-11-30",
      "has_results": false,
      "last_update_posted_date": "2023-08-18",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 12,
      "location_summary": "Dunwoody, Georgia • Chicago, Illinois • Portland, Maine + 9 more",
      "locations": [
        {
          "city": "Dunwoody",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Portland",
          "state": "Maine"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01770951"
    },
    {
      "nct_id": "NCT01792583",
      "title": "The Nuvigil and Provigil Pregnancy Registry",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Narcolepsy",
        "Obstructive Sleep Apnea",
        "Shift Work Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "Modafinil/armodafinil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cephalon, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 191,
      "start_date": "2009-06-30",
      "completion_date": "2023-11-30",
      "has_results": false,
      "last_update_posted_date": "2024-02-05",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 1,
      "location_summary": "West Chester, Pennsylvania",
      "locations": [
        {
          "city": "West Chester",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01792583"
    },
    {
      "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": "2026-10-31T05:11:39.889Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05912751"
    },
    {
      "nct_id": "NCT06105242",
      "title": "Biological Sex and CTEPH-related RV Dysfunction and Recovery (BIOSPHeRe)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "CTEPH"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Intermountain Health Care, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2022-05-30",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2023-10-27",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 1,
      "location_summary": "Murray, Utah",
      "locations": [
        {
          "city": "Murray",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06105242"
    },
    {
      "nct_id": "NCT06854341",
      "title": "A Canadian Study of Persistence on Ofatumumab Using Patient Support Program Data",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis, Relapsing-Remitting"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5448,
      "start_date": "2024-02-09",
      "completion_date": "2024-08-27",
      "has_results": false,
      "last_update_posted_date": "2025-03-25",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06854341"
    },
    {
      "nct_id": "NCT05572073",
      "title": "Otoferlin Gene-mediated Hearing Loss Natural History Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sensorineural Hearing Loss, Bilateral"
      ],
      "interventions": [
        {
          "name": "Natural History Study",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Akouos, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "44 Years",
        "sex": "ALL",
        "summary": "Up to 44 Years"
      },
      "enrollment_count": 150,
      "start_date": "2022-07-14",
      "completion_date": "2029-02",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 4,
      "location_summary": "Iowa City, Iowa • Cincinnati, Ohio • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05572073"
    },
    {
      "nct_id": "NCT07532369",
      "title": "Occlutech AFR Fontan Study",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Failure of Fontan Type Circulation",
        "Fenestration",
        "Univentricular Heart",
        "Congenital Anomaly"
      ],
      "interventions": [
        {
          "name": "Occlutech Atrial Flow Regulator Retrospective Data Collection",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Occlutech International AB",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 25,
      "start_date": "2026-05-01",
      "completion_date": "2026-09",
      "has_results": false,
      "last_update_posted_date": "2026-04-15",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 7,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Diego, California + 4 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07532369"
    },
    {
      "nct_id": "NCT01519934",
      "title": "A Retrospective Study to Evaluate the Effectiveness of the Ulthera System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Skin Laxity",
        "Wrinkles"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Ulthera, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "25 Years to 85 Years"
      },
      "enrollment_count": 48,
      "start_date": "2011-10",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2017-12-18",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01519934"
    },
    {
      "nct_id": "NCT03798847",
      "title": "Safety and Performance of Journey II XR Total Knee System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Journey II XR Total Knee System"
      ],
      "interventions": [
        {
          "name": "Journey II XR TKA",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Smith & Nephew, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 683,
      "start_date": "2018-11-01",
      "completion_date": "2020-09-10",
      "has_results": false,
      "last_update_posted_date": "2023-07-14",
      "last_synced_at": "2026-10-31T05:11:39.889Z",
      "location_count": 12,
      "location_summary": "Phoenix, Arizona • Aurora, Illinois • Port Huron, Michigan + 9 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Aurora",
          "state": "Illinois"
        },
        {
          "city": "Port Huron",
          "state": "Michigan"
        },
        {
          "city": "Reno",
          "state": "Nevada"
        },
        {
          "city": "Somerset",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03798847"
    }
  ]
}