{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=34", "query": { "intervention": "observational study", "page": 34 }, "page_size": 10 }, "pagination": { "page": 34, "page_size": 10, "total_count": 4385, "total_pages": 439, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=35&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=observational+study&page=33&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-20T09:19:50.303Z", "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": "NCT07645391", "title": "Targeted Early Detection Program in Men at High Genetic Risk for Prostate Cancer", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Prostate Carcinoma" ], "interventions": [ { "name": "Non-Interventional Study", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "University of Michigan Rogel Cancer Center", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "35 Years", "maximum_age": "70 Years", "sex": "MALE", "summary": "35 Years to 70 Years · Male only" }, "enrollment_count": 200, "start_date": "2017-01-01", "completion_date": "2030-01", "has_results": false, "last_update_posted_date": "2026-06-12", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 1, "location_summary": "Ann Arbor, Michigan", "locations": [ { "city": "Ann Arbor", "state": "Michigan" } ], "official_url": "https://clinicaltrials.gov/study/NCT07645391" }, { "nct_id": "NCT03511118", "title": "Pharmacokinetics and Safety of Commonly Used Drugs in Lactating Women and Breastfed Infants", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Lactating Women on Select DOI", "Breastfed Infants of Mothers on Select DOI" ], "interventions": [ { "name": "Tranexamic acid (TXA)", "type": "DRUG" }, { "name": "labetalol", "type": "DRUG" }, { "name": "metformin", "type": "DRUG" }, { "name": "nifedipine", "type": "DRUG" }, { "name": "clindamycin", "type": "DRUG" }, { "name": "oxycodone", "type": "DRUG" }, { "name": "azithromycin", "type": "DRUG" }, { "name": "escitalopram", "type": "DRUG" }, { "name": "sertraline", "type": "DRUG" }, { "name": "ondansetron", "type": "DRUG" }, { "name": "Ciprofloxacin", "type": "DRUG" }, { "name": "Doxycycline", "type": "DRUG" }, { "name": "Levofloxacin", "type": "DRUG" }, { "name": "Methylphenidate", "type": "DRUG" }, { "name": "Sumatriptan", "type": "DRUG" }, { "name": "Citalopram", "type": "DRUG" }, { "name": "Cyclobenzaprine", "type": "DRUG" }, { "name": "Furosemide", "type": "DRUG" }, { "name": "Gabapentin", "type": "DRUG" }, { "name": "Hydrochlorothiazide", "type": "DRUG" }, { "name": "Hydroxyurea", "type": "DRUG" }, { "name": "Rosuvastatin", "type": "DRUG" }, { "name": "Topiramate", "type": "DRUG" }, { "name": "Trazodone", "type": "DRUG" }, { "name": "Valganciclovir", "type": "DRUG" }, { "name": "Venlafaxine", "type": "DRUG" }, { "name": "Verapamil", "type": "DRUG" }, { "name": "Remdesivir", "type": "DRUG" }, { "name": "Anakinra", "type": "DRUG" }, { "name": "Tocilizumab", "type": "DRUG" }, { "name": "Fluvoxamine", "type": "DRUG" }, { "name": "Amoxicillin", "type": "DRUG" }, { "name": "Bupropion", "type": "DRUG" }, { "name": "Duloxetine", "type": "DRUG" }, { "name": "Hydrocodone", "type": "DRUG" }, { "name": "Levetiracetam", "type": "DRUG" }, { "name": "Paroxetine", "type": "DRUG" }, { "name": "Buprenorphine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Duke University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": null, "maximum_age": null, "sex": "ALL", "summary": "Not listed" }, "enrollment_count": 1600, "start_date": "2018-10-04", "completion_date": "2028-07-31", "has_results": false, "last_update_posted_date": "2026-07-29", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 20, "location_summary": "La Jolla, California • Loma Linda, California • Chicago, Illinois + 15 more", "locations": [ { "city": "La Jolla", "state": "California" }, { "city": "Loma Linda", "state": "California" }, { "city": "Chicago", "state": "Illinois" }, { "city": "Chicago", "state": "Illinois" }, { "city": "Indianapolis", "state": "Indiana" } ], "official_url": "https://clinicaltrials.gov/study/NCT03511118" }, { "nct_id": "NCT06363110", "title": "An Observational Study to Learn More About Vericiguat Treatment Patterns and Its Safety in People With Chronic Heart Failure With Reduced Ejection Fraction in Routine Medical Care in the United States", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Chronic Heart Failure With Reduced Ejection Fraction" ], "interventions": [ { "name": "Vericiguat (Verquvo, BAY1021189)", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Bayer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 1400, "start_date": "2024-04-10", "completion_date": "2024-06-24", "has_results": false, "last_update_posted_date": "2024-07-03", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 1, "location_summary": "Whippany, New Jersey", "locations": [ { "city": "Whippany", "state": "New Jersey" } ], "official_url": "https://clinicaltrials.gov/study/NCT06363110" }, { "nct_id": "NCT01362179", "title": "National Marrow Donor Program Long-Term Donor Follow-Up", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Hematologic Neoplasms" ], "interventions": [], "intervention_types": [], "sponsor": "Center for International Blood and Marrow Transplant Research", "sponsor_class": "NETWORK", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "60 Years", "sex": "ALL", "summary": "18 Years to 60 Years" }, "enrollment_count": 21974, "start_date": "2010-10", "completion_date": "2020-10-15", "has_results": false, "last_update_posted_date": "2020-10-20", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 28, "location_summary": "Duarte, California • Oakland, California • Santa Ana, California + 25 more", "locations": [ { "city": "Duarte", "state": "California" }, { "city": "Oakland", "state": "California" }, { "city": "Santa Ana", "state": "California" }, { "city": "Denver", "state": "Colorado" }, { "city": "Fort Lauderdale", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01362179" }, { "nct_id": "NCT06273748", "title": "RChildUV:Study on Non-infectious Chronic Uveitis in Pediatric Age", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Uveitis" ], "interventions": [], "intervention_types": [], "sponsor": "Meyer Children's Hospital IRCCS", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "1 Year", "maximum_age": "16 Years", "sex": "ALL", "summary": "1 Year to 16 Years" }, "enrollment_count": 290, "start_date": "2022-02-10", "completion_date": "2032-05-02", "has_results": false, "last_update_posted_date": "2026-03-27", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 3, "location_summary": "Kansas City, Kansas • Boston, Massachusetts • Cincinnati, Ohio", "locations": [ { "city": "Kansas City", "state": "Kansas" }, { "city": "Boston", "state": "Massachusetts" }, { "city": "Cincinnati", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT06273748" }, { "nct_id": "NCT07449715", "title": "Respiration From Pleth Validation", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Respiratory Rate Monitoring" ], "interventions": [ { "name": "Physiological Monitoring with SpO₂ Sensors and Capnography", "type": "DEVICE" } ], "intervention_types": [ "DEVICE" ], "sponsor": "Philips Clinical & Medical Affairs Global", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "4 Years", "maximum_age": null, "sex": "ALL", "summary": "4 Years and older" }, "enrollment_count": 113, "start_date": "2026-02-06", "completion_date": "2026-05-25", "has_results": false, "last_update_posted_date": "2026-03-04", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 1, "location_summary": "Durham, North Carolina", "locations": [ { "city": "Durham", "state": "North Carolina" } ], "official_url": "https://clinicaltrials.gov/study/NCT07449715" }, { "nct_id": "NCT05729048", "title": "Starling/CRRT Observational Study", "overall_status": "WITHDRAWN", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Hemodynamic Monitoring" ], "interventions": [ { "name": "Starling", "type": "DEVICE" } ], "intervention_types": [ "DEVICE" ], "sponsor": "Baxter Healthcare Corporation", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "95 Years", "sex": "ALL", "summary": "18 Years to 95 Years" }, "enrollment_count": 0, "start_date": "2023-07-15", "completion_date": "2025-03-14", "has_results": false, "last_update_posted_date": "2023-07-14", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 1, "location_summary": "Lexington, Kentucky", "locations": [ { "city": "Lexington", "state": "Kentucky" } ], "official_url": "https://clinicaltrials.gov/study/NCT05729048" }, { "nct_id": "NCT06256458", "title": "Prospective Registry to Evaluate Outcomes of NanoBone® Bone Graft in Acute Trauma", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Fractures, Bone" ], "interventions": [ { "name": "NanoBone® Bone Graft", "type": "DEVICE" } ], "intervention_types": [ "DEVICE" ], "sponsor": "Artoss Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 200, "start_date": "2023-12-01", "completion_date": "2026-12-01", "has_results": false, "last_update_posted_date": "2025-02-12", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 1, "location_summary": "Madison, Wisconsin", "locations": [ { "city": "Madison", "state": "Wisconsin" } ], "official_url": "https://clinicaltrials.gov/study/NCT06256458" }, { "nct_id": "NCT00016276", "title": "Combination Chemotherapy, Surgery, and Radiation Therapy With or Without Dexrazoxane and Trastuzumab in Treating Women With Stage III or Stage IV Breast Cancer", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Cardiac Toxicity", "Inflammatory Breast Cancer", "Stage IIIA Breast Cancer", "Stage IIIB Breast Cancer", "Stage IV Breast Cancer" ], "interventions": [ { "name": "dexrazoxane hydrochloride", "type": "DRUG" }, { "name": "doxorubicin hydrochloride", "type": "DRUG" }, { "name": "cyclophosphamide", "type": "DRUG" }, { "name": "paclitaxel", "type": "DRUG" }, { "name": "trastuzumab", "type": "BIOLOGICAL" }, { "name": "therapeutic conventional surgery", "type": "PROCEDURE" }, { "name": "radiation therapy", "type": "RADIATION" }, { "name": "tamoxifen citrate", "type": "DRUG" }, { "name": "laboratory biomarker analysis", "type": "OTHER" } ], "intervention_types": [ "DRUG", "BIOLOGICAL", "PROCEDURE", "RADIATION", "OTHER" ], "sponsor": "National Cancer Institute (NCI)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "FEMALE", "summary": "18 Years and older · Female only" }, "enrollment_count": 396, "start_date": "2001-05", "completion_date": null, "has_results": false, "last_update_posted_date": "2013-01-16", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 1, "location_summary": "Chicago, Illinois", "locations": [ { "city": "Chicago", "state": "Illinois" } ], "official_url": "https://clinicaltrials.gov/study/NCT00016276" }, { "nct_id": "NCT01987921", "title": "Observational Study of Pediatric Acute Kidney Injury, Risk Factors and Outcomes", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Acute Kidney Injury" ], "interventions": [], "intervention_types": [], "sponsor": "Children's Hospital Medical Center, Cincinnati", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "3 Months", "maximum_age": "25 Years", "sex": "ALL", "summary": "3 Months to 25 Years" }, "enrollment_count": 5237, "start_date": "2014-01", "completion_date": "2014-12", "has_results": false, "last_update_posted_date": "2026-03-24", "last_synced_at": "2026-10-20T09:19:50.303Z", "location_count": 18, "location_summary": "Birmingham, Alabama • Palo Alto, California • Aurora, Colorado + 14 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Palo Alto", "state": "California" }, { "city": "Aurora", "state": "Colorado" }, { "city": "New Haven", "state": "Connecticut" }, { "city": "Wilmington", "state": "Delaware" } ], "official_url": "https://clinicaltrials.gov/study/NCT01987921" } ] }