{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Control&page=4", "query": { "intervention": "Observational Control", "page": 4 }, "page_size": 10 }, "pagination": { "page": 4, "page_size": 10, "total_count": 643, "total_pages": 65, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Control&page=5&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Observational+Control&page=3&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-22T09:13:43.854Z", "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": "NCT04557059", "title": "A Study of Adding Apalutamide to Radiotherapy and LHRH Agonist in High-Risk Patients With Hormone-Sensitive Prostate Cancer", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Prostatic Neoplasms" ], "interventions": [ { "name": "Radiotherapy", "type": "RADIATION" }, { "name": "LHRHa", "type": "DRUG" }, { "name": "Apalutamide", "type": "DRUG" } ], "intervention_types": [ "RADIATION", "DRUG" ], "sponsor": "Janssen Pharmaceutica N.V., Belgium", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "MALE", "summary": "18 Years and older · Male only" }, "enrollment_count": 691, "start_date": "2020-11-12", "completion_date": "2031-09-15", "has_results": false, "last_update_posted_date": "2026-09-25", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 13, "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Lakewood, Colorado + 10 more", "locations": [ { "city": "Tucson", "state": "Arizona" }, { "city": "Little Rock", "state": "Arkansas" }, { "city": "Lakewood", "state": "Colorado" }, { "city": "Hialeah", "state": "Florida" }, { "city": "Jeffersonville", "state": "Indiana" } ], "official_url": "https://clinicaltrials.gov/study/NCT04557059" }, { "nct_id": "NCT05985642", "title": "Observational PIC Destination Cohort", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "HIV-1-infection" ], "interventions": [], "intervention_types": [], "sponsor": "Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections", "sponsor_class": "NETWORK", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 30, "start_date": "2024-03-19", "completion_date": "2029-09-03", "has_results": false, "last_update_posted_date": "2024-12-13", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 4, "location_summary": "San Francisco, California • St Louis, Missouri • New York, New York + 1 more", "locations": [ { "city": "San Francisco", "state": "California" }, { "city": "St Louis", "state": "Missouri" }, { "city": "New York", "state": "New York" }, { "city": "Cleveland", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT05985642" }, { "nct_id": "NCT04028479", "title": "The Registry of Oncology Outcomes Associated With Testing and Treatment", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Adenocarcinoma", "Adenocystic Carcinoma", "Anal Cancer", "Appendix Cancer", "Brain Tumor", "Glioblastoma", "Astrocytoma", "Bile Duct Cancer", "Cholangiocarcinoma", "Bladder Cancer", "Bone Cancer", "Synovial Sarcoma", "Chondrosarcoma", "Liposarcoma", "Sarcoma, Kaposi", "Sarcoma,Soft Tissue", "Sarcoma", "Osteosarcoma", "CNS Cancer", "Brain Stem Neoplasms", "Breast Cancer", "Cervical Cancer", "Colorectal Cancer", "Rectal Cancer", "Colon Cancer", "Esophageal Cancer", "Esophagus Cancer", "Cancer of Colon", "Pancreatic Cancer", "Cancer of Pancreas", "Testis Cancer", "Testicular Cancer", "Ureter Cancer", "Renal Cell Carcinoma", "Kidney Cancer", "Gestational Trophoblastic Tumor", "Head and Neck Neoplasms", "Parotid Tumor", "Larynx Cancer", "Tongue Cancer", "Pharynx Cancer", "Salivary Gland Cancer", "Acute Myeloid Leukemia", "Chronic Myeloid Leukemia", "Acute Lymphoblastic Leukemia", "Multiple Myeloma", "Non Hodgkin Lymphoma", "Carcinoid Tumor", "Lung Cancer", "Neuroendocrine Tumors", "Mesothelioma", "Thyroid Cancer", "Parathyroid Neoplasms", "Adrenal Cancer", "Small Bowel Cancer", "Stomach Cancer", "Liver Cancer", "Hepatic Cancer", "Melanoma", "Skin Cancer", "Unknown Primary Tumors", "Uterine Cancer", "Fallopian Tube Cancer", "Ovarian Cancer", "Prostate Cancer", "Vaginal Cancer", "Penile Cancer", "Vulvar Cancer", "Waldenstrom Macroglobulinemia", "Cancer, Advanced", "Thymus Cancer", "Nasopharyngeal Carcinoma", "Multiple Endocrine Neoplasia", "Pheochromocytoma", "Small Cell Carcinoma", "Pulmonary Carcinoma" ], "interventions": [ { "name": "Biomarker Testing (L)", "type": "DIAGNOSTIC_TEST" }, { "name": "Systemic Treatment (T)", "type": "DRUG" }, { "name": "Patient Reported Outcomes (P)", "type": "OTHER" } ], "intervention_types": [ "DIAGNOSTIC_TEST", "DRUG", "OTHER" ], "sponsor": "Taproot Health", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 167, "start_date": "2021-05-05", "completion_date": "2024-10-31", "has_results": false, "last_update_posted_date": "2024-12-18", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 2, "location_summary": "Idaho Falls, Idaho • Laredo, Texas", "locations": [ { "city": "Idaho Falls", "state": "Idaho" }, { "city": "Laredo", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT04028479" }, { "nct_id": "NCT01008527", "title": "Phase I Oncovir Poly IC:LC and NY-ESO-1/gp100", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Melanoma" ], "interventions": [ { "name": "CP 870,893", "type": "DRUG" }, { "name": "Peptides", "type": "BIOLOGICAL" }, { "name": "Oncovir poly IC:LC", "type": "BIOLOGICAL" } ], "intervention_types": [ "DRUG", "BIOLOGICAL" ], "sponsor": "H. Lee Moffitt Cancer Center and Research Institute", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 22, "start_date": "2009-10", "completion_date": "2015-09", "has_results": false, "last_update_posted_date": "2015-09-24", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 1, "location_summary": "Tampa, Florida", "locations": [ { "city": "Tampa", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01008527" }, { "nct_id": "NCT05879159", "title": "Accelerated Recovery After MIS Hepatectomy (ARAMIS Hep) to Support Early Discharge for Patients Undergoing Minimally Invasive Liver Resection", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Liver" ], "interventions": [ { "name": "Questionnaires", "type": "BEHAVIORAL" } ], "intervention_types": [ "BEHAVIORAL" ], "sponsor": "M.D. Anderson Cancer Center", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 39, "start_date": "2023-10-05", "completion_date": "2027-02-01", "has_results": false, "last_update_posted_date": "2026-10-15", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 1, "location_summary": "Houston, Texas", "locations": [ { "city": "Houston", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT05879159" }, { "nct_id": "NCT03008382", "title": "Interstitial Cystitis: Examination of the Central Autonomic Network", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Interstitial Cystitis/Painful Bladder Syndrome", "Myofascial Pelvic Pain" ], "interventions": [ { "name": "Metoprolol Tartrate Oral Tablet", "type": "DRUG" }, { "name": "Placebo Oral Tablet", "type": "DRUG" }, { "name": "No intervention- observational sub-study", "type": "OTHER" } ], "intervention_types": [ "DRUG", "OTHER" ], "sponsor": "Virginia Commonwealth University", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "80 Years", "sex": "FEMALE", "summary": "18 Years to 80 Years · Female only" }, "enrollment_count": 72, "start_date": "2017-03-01", "completion_date": "2022-03-16", "has_results": true, "last_update_posted_date": "2025-02-17", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 2, "location_summary": "Evanston, Illinois • Richmond, Virginia", "locations": [ { "city": "Evanston", "state": "Illinois" }, { "city": "Richmond", "state": "Virginia" } ], "official_url": "https://clinicaltrials.gov/study/NCT03008382" }, { "nct_id": "NCT03806296", "title": "Delayed Sleep Timing in Teens Study", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Delayed Sleep Phase" ], "interventions": [ { "name": "Increase morning bright light", "type": "OTHER" }, { "name": "Decrease evening blue light", "type": "OTHER" }, { "name": "Sleep scheduling", "type": "BEHAVIORAL" }, { "name": "Monitor sleep, mood, and substance use", "type": "BEHAVIORAL" } ], "intervention_types": [ "OTHER", "BEHAVIORAL" ], "sponsor": "University of Pittsburgh", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "16 Years", "maximum_age": "19 Years", "sex": "ALL", "summary": "16 Years to 19 Years" }, "enrollment_count": 142, "start_date": "2018-12-03", "completion_date": "2024-11-30", "has_results": true, "last_update_posted_date": "2025-08-26", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 1, "location_summary": "Pittsburgh, Pennsylvania", "locations": [ { "city": "Pittsburgh", "state": "Pennsylvania" } ], "official_url": "https://clinicaltrials.gov/study/NCT03806296" }, { "nct_id": "NCT04239391", "title": "Hemoglobin Maintenance in Pediatric ESRD (End-stage Renal Disease) Patients by Ferric Pyrophosphate Citrate (FPC)", "overall_status": "UNKNOWN", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "End Stage Renal Disease" ], "interventions": [ { "name": "Triferic", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Rockwell Medical Technologies, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "6 Months", "maximum_age": "17 Years", "sex": "ALL", "summary": "6 Months to 17 Years" }, "enrollment_count": 150, "start_date": "2020-09-01", "completion_date": "2023-11-01", "has_results": false, "last_update_posted_date": "2021-04-21", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 8, "location_summary": "Loma Linda, California • Washington D.C., District of Columbia • Indianapolis, Indiana + 5 more", "locations": [ { "city": "Loma Linda", "state": "California" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "Indianapolis", "state": "Indiana" }, { "city": "Kansas City", "state": "Missouri" }, { "city": "Charlotte", "state": "North Carolina" } ], "official_url": "https://clinicaltrials.gov/study/NCT04239391" }, { "nct_id": "NCT00617019", "title": "Impulse Control Disorders in Parkinson's Patients Treated With Pramipexole and Other Agents (DOMINION Study)", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Parkinson Disease" ], "interventions": [], "intervention_types": [], "sponsor": "Boehringer Ingelheim", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "30 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "30 Years to 75 Years" }, "enrollment_count": 3234, "start_date": "2006-09", "completion_date": null, "has_results": false, "last_update_posted_date": "2013-11-13", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 36, "location_summary": "Gilbert, Arizona • Scottsdale, Arizona • Sun City, Arizona + 31 more", "locations": [ { "city": "Gilbert", "state": "Arizona" }, { "city": "Scottsdale", "state": "Arizona" }, { "city": "Sun City", "state": "Arizona" }, { "city": "Fresno", "state": "California" }, { "city": "Oxnard", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00617019" }, { "nct_id": "NCT05349019", "title": "A Natural History Study of Patients With G2019S LRRK2 Parkinson's Disease", "overall_status": "TERMINATED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Patients With Parkinson's Disease (PD) Caused by the p.Gly2019Ser (G2019S) Pathogenic Mutation of the Leucine-Rich Repeat Kinase 2 (LRRK2) Gene" ], "interventions": [ { "name": "Observational", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "Escape Bio, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "80 Years", "sex": "ALL", "summary": "18 Years to 80 Years" }, "enrollment_count": 22, "start_date": "2022-05-02", "completion_date": "2022-08-05", "has_results": false, "last_update_posted_date": "2023-01-18", "last_synced_at": "2026-10-22T09:13:43.854Z", "location_count": 1, "location_summary": "Culver City, California", "locations": [ { "city": "Culver City", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT05349019" } ] }