{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Prospective+Observational+Study&page=12",
    "query": {
      "condition": "Prospective Observational Study",
      "page": 12
    },
    "page_size": 10
  },
  "pagination": {
    "page": 12,
    "page_size": 10,
    "total_count": 694,
    "total_pages": 70,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Prospective+Observational+Study&page=13&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Prospective+Observational+Study&page=11&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-19T11:39:00.512Z",
  "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": "NCT04277208",
      "title": "Opioid-Free Study in Arthroscopic Rotator Cuff Repair",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Rotator Cuff Tears"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Rothman Institute Orthopaedics",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 36,
      "start_date": "2018-06-13",
      "completion_date": "2019-07-01",
      "has_results": false,
      "last_update_posted_date": "2020-02-20",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04277208"
    },
    {
      "nct_id": "NCT04495699",
      "title": "Asymptomatic Renal Calculi in Recurrent Urinary Tract Infections",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Urinary Tract Infections",
        "Kidney Stone"
      ],
      "interventions": [
        {
          "name": "None - observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 94,
      "start_date": "2020-09-09",
      "completion_date": "2025-09-01",
      "has_results": false,
      "last_update_posted_date": "2025-10-21",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 5,
      "location_summary": "Phoenix, Arizona • San Diego, California • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04495699"
    },
    {
      "nct_id": "NCT01857427",
      "title": "A Prospective Observational Cohort to Study the Genetics of Obstructive Sleep Apnea and Associated Co-Morbidities",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Obstructive Sleep Apnea"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Ulysses Magalang MD",
      "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": 5000,
      "start_date": "2012-08",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-27",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01857427"
    },
    {
      "nct_id": "NCT04378777",
      "title": "Immunophenotyping Assessment in a COVID-19 Cohort",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Coronavirus Disease 2019 (COVID-19)",
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "Biological sample collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Data Collection: Clinical Care Assessments",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1227,
      "start_date": "2020-05-01",
      "completion_date": "2022-04-21",
      "has_results": false,
      "last_update_posted_date": "2022-05-19",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 17,
      "location_summary": "Tucson, Arizona • Los Angeles, California • San Francisco, California + 14 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04378777"
    },
    {
      "nct_id": "NCT06878131",
      "title": "Precision-MRD: Prospective Observational Study of Biomarker-directed Systemic Therapy for Colorectal Cancer Patients With Minimal Residual Disease",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "Colorectal Cancer",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2025-04-18",
      "completion_date": "2028-12-22",
      "has_results": false,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06878131"
    },
    {
      "nct_id": "NCT05455931",
      "title": "Real World Observational Study of Poteligeo in Adult Patients With MF and SS (PROSPER)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mycosis Fungoides and Sézary Syndrome"
      ],
      "interventions": [
        {
          "name": "Poteligeo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kyowa Kirin Pharmaceutical Development Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 73,
      "start_date": "2022-11-09",
      "completion_date": "2025-08-07",
      "has_results": false,
      "last_update_posted_date": "2026-06-26",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 5,
      "location_summary": "Baltimore, Maryland • St Louis, Missouri • New York, New York + 2 more",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Fairfax",
          "state": "Virginia"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05455931"
    },
    {
      "nct_id": "NCT04084288",
      "title": "Acupuncture for Low-Dose Opioid for TKA Replacement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Knee Osteoarthritis",
        "Pain, Postoperative",
        "Acupuncture"
      ],
      "interventions": [
        {
          "name": "Acupuncture",
          "type": "OTHER"
        },
        {
          "name": "Peripheral Nerve Stimulator",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "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": 41,
      "start_date": "2019-08-21",
      "completion_date": "2020-10-02",
      "has_results": true,
      "last_update_posted_date": "2024-12-27",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04084288"
    },
    {
      "nct_id": "NCT01213641",
      "title": "Clinical Outcomes and Safety: A Registry Study of Ilaris (Canakinumab) Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cryopyrin-associated Periodic Syndromes (CAPS)",
        "Familial Cold Autoinflam Syn (FCAS)",
        "Muckle-wells Syn (MWS)",
        "Neonatal Onset Multisystem Inflam Disease (NOMID)"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 288,
      "start_date": "2009-11",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2016-03-28",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 3,
      "location_summary": "Little Rock, Arizona • Columbus, Georgia • Chicago, Illinois",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arizona"
        },
        {
          "city": "Columbus",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01213641"
    },
    {
      "nct_id": "NCT03428646",
      "title": "Study of Patients Receiving DUPIXENT® for Atopic Dermatitis (AD)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Dermatitis, Atopic"
      ],
      "interventions": [
        {
          "name": "Dupilumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Regeneron Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 858,
      "start_date": "2018-04-06",
      "completion_date": "2027-07-28",
      "has_results": false,
      "last_update_posted_date": "2026-10-09",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 93,
      "location_summary": "Birmingham, Alabama • Gilbert, Arizona • Fountain Valley, California + 83 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03428646"
    },
    {
      "nct_id": "NCT05157191",
      "title": "Safety of Pediatric COVID-19 Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pain",
        "Injection Site Reaction",
        "Adverse Drug Event"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "5 Years to 15 Years"
      },
      "enrollment_count": 299,
      "start_date": "2022-04-06",
      "completion_date": "2023-10-27",
      "has_results": false,
      "last_update_posted_date": "2026-07-01",
      "last_synced_at": "2026-10-19T11:39:00.512Z",
      "location_count": 5,
      "location_summary": "Oakland, California • Atlanta, Georgia • New York, New York + 2 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05157191"
    }
  ]
}