{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=allopurinol&page=2", "query": { "intervention": "allopurinol", "page": 2 }, "page_size": 10 }, "pagination": { "page": 2, "page_size": 10, "total_count": 114, "total_pages": 12, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=allopurinol&page=3&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=allopurinol&page=1&page_size=10" }, "source": "remote", "last_synced_at": "2026-09-30T08:41:41.516Z", "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": "NCT03990363", "title": "A Study of Verinurad and Allopurinol in Patients With Chronic Kidney Disease and Hyperuricaemia", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Chronic Kidney Disease" ], "interventions": [ { "name": "Verinurad", "type": "DRUG" }, { "name": "Allopurinol", "type": "DRUG" }, { "name": "Placebo for Verinurad", "type": "DRUG" }, { "name": "Placebo for Allopurinol", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "AstraZeneca", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "130 Years", "sex": "ALL", "summary": "18 Years to 130 Years" }, "enrollment_count": 861, "start_date": "2019-07-23", "completion_date": "2021-11-22", "has_results": true, "last_update_posted_date": "2023-03-02", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 54, "location_summary": "Huntsville, Alabama • Bakersfield, California • Canyon Country, California + 45 more", "locations": [ { "city": "Huntsville", "state": "Alabama" }, { "city": "Bakersfield", "state": "California" }, { "city": "Canyon Country", "state": "California" }, { "city": "Laguna Hills", "state": "California" }, { "city": "Long Beach", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT03990363" }, { "nct_id": "NCT03836599", "title": "A Study to Assess the Safety and Pharmacokinetics of Verinurad and Allopurinol in Asian and Chinese Subjects", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Chronic Kidney Disease" ], "interventions": [ { "name": "Verinurad", "type": "DRUG" }, { "name": "Allopurinol", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "AstraZeneca", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "50 Years", "sex": "ALL", "summary": "18 Years to 50 Years" }, "enrollment_count": 6, "start_date": "2019-01-16", "completion_date": "2019-04-26", "has_results": false, "last_update_posted_date": "2019-05-13", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 1, "location_summary": "Glendale, California", "locations": [ { "city": "Glendale", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT03836599" }, { "nct_id": "NCT01265264", "title": "Study to Evaluate sUA Lowering Activity, Safety and Efficacy of Oral Ulodesine Added to Allopurinol", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Gout", "Hyperuricemia", "Arthritis", "Joint Disease" ], "interventions": [ { "name": "ulodesine", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "BioCryst Pharmaceuticals", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "69 Years", "sex": "ALL", "summary": "18 Years to 69 Years" }, "enrollment_count": 279, "start_date": "2010-12", "completion_date": "2013-02", "has_results": false, "last_update_posted_date": "2013-11-20", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 54, "location_summary": "Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 51 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Mobile", "state": "Alabama" }, { "city": "Phoenix", "state": "Arizona" }, { "city": "Scottsdale", "state": "Arizona" }, { "city": "Tucson", "state": "Arizona" } ], "official_url": "https://clinicaltrials.gov/study/NCT01265264" }, { "nct_id": "NCT00288158", "title": "Primary Prevention of Hypertension in Obese Adolescents", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Obesity", "Pre-Hypertension", "Hyperuricemia" ], "interventions": [ { "name": "Allopurinol", "type": "DRUG" }, { "name": "Probenecid", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)", "sponsor_class": "NIH", "healthy_volunteers": true, "eligibility": { "minimum_age": "11 Years", "maximum_age": "18 Years", "sex": "ALL", "summary": "11 Years to 18 Years" }, "enrollment_count": 60, "start_date": "2008-09", "completion_date": "2011-01", "has_results": false, "last_update_posted_date": "2017-09-14", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 1, "location_summary": "Houston, Texas", "locations": [ { "city": "Houston", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT00288158" }, { "nct_id": "NCT05888233", "title": "Allopurinol Improves Heart Function in African Americans With Resistant Hypertension", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Heart Failure Preserved Ejection Fraction", "Resistant Hypertension" ], "interventions": [ { "name": "Allopurinol", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "VA Office of Research and Development", "sponsor_class": "FED", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "18 Years to 75 Years" }, "enrollment_count": 40, "start_date": "2024-09-30", "completion_date": "2026-08-31", "has_results": false, "last_update_posted_date": "2026-09-04", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 1, "location_summary": "Birmingham, Alabama", "locations": [ { "city": "Birmingham", "state": "Alabama" } ], "official_url": "https://clinicaltrials.gov/study/NCT05888233" }, { "nct_id": "NCT01391325", "title": "Allopurinol Outcome Study", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Gout" ], "interventions": [ { "name": "Allopurinol", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Ardea Biosciences, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "85 Years", "sex": "ALL", "summary": "18 Years to 85 Years" }, "enrollment_count": 1735, "start_date": "2011-07", "completion_date": "2013-03", "has_results": true, "last_update_posted_date": "2014-06-17", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 127, "location_summary": "Birmingham, Alabama • Bringham, Alabama • Calera, Alabama + 113 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Birmingham", "state": "Alabama" }, { "city": "Bringham", "state": "Alabama" }, { "city": "Calera", "state": "Alabama" }, { "city": "Huntsville", "state": "Alabama" } ], "official_url": "https://clinicaltrials.gov/study/NCT01391325" }, { "nct_id": "NCT00940524", "title": "Induction Therapy With Cytarabine, High-Dose Mitoxantrone and Dasatinib for Patients With Philadelphia-Chromosome Positive (Ph+) Acute Lymphoblastic Leukemia", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Leukemia", "Acute Lymphoblastic Leukemia" ], "interventions": [ { "name": "Dasatinib, Mitoxantrone, Cytarabine", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Memorial Sloan Kettering 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": 7, "start_date": "2009-07", "completion_date": "2014-04", "has_results": false, "last_update_posted_date": "2014-04-10", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 1, "location_summary": "New York, New York", "locations": [ { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT00940524" }, { "nct_id": "NCT00039130", "title": "Rituximab, Chemotherapy, and Filgrastim in Treating Patients With Burkitt's Lymphoma or Burkitt's Leukemia", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Leukemia", "Lymphoma" ], "interventions": [ { "name": "filgrastim", "type": "BIOLOGICAL" }, { "name": "rituximab", "type": "BIOLOGICAL" }, { "name": "cyclophosphamide", "type": "DRUG" }, { "name": "cytarabine", "type": "DRUG" }, { "name": "dexamethasone", "type": "DRUG" }, { "name": "doxorubicin hydrochloride", "type": "DRUG" }, { "name": "etoposide", "type": "DRUG" }, { "name": "ifosfamide", "type": "DRUG" }, { "name": "leucovorin calcium", "type": "DRUG" }, { "name": "methotrexate", "type": "DRUG" }, { "name": "prednisone", "type": "DRUG" }, { "name": "vincristine sulfate", "type": "DRUG" }, { "name": "Allopurinol", "type": "DRUG" } ], "intervention_types": [ "BIOLOGICAL", "DRUG" ], "sponsor": "Alliance for Clinical Trials in Oncology", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "16 Years", "maximum_age": null, "sex": "ALL", "summary": "16 Years and older" }, "enrollment_count": 105, "start_date": "2002-05", "completion_date": "2014-10", "has_results": true, "last_update_posted_date": "2023-08-21", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 31, "location_summary": "San Diego, California • Lewes, Delaware • Newark, Delaware + 25 more", "locations": [ { "city": "San Diego", "state": "California" }, { "city": "Lewes", "state": "Delaware" }, { "city": "Newark", "state": "Delaware" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "Chicago", "state": "Illinois" } ], "official_url": "https://clinicaltrials.gov/study/NCT00039130" }, { "nct_id": "NCT06276556", "title": "Extension Study of ABP-671 in Participants With Gout", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2", "PHASE3" ], "conditions": [ "Gout" ], "interventions": [ { "name": "ABP-671", "type": "DRUG" }, { "name": "Allopurinol", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Atom Therapeutics Co., Ltd", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "19 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "19 Years to 75 Years" }, "enrollment_count": 43, "start_date": "2024-04-22", "completion_date": "2024-09-05", "has_results": false, "last_update_posted_date": "2025-07-16", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 33, "location_summary": "Tempe, Arizona • Tucson, Arizona • Anaheim, California + 24 more", "locations": [ { "city": "Tempe", "state": "Arizona" }, { "city": "Tucson", "state": "Arizona" }, { "city": "Anaheim", "state": "California" }, { "city": "Sacramento", "state": "California" }, { "city": "Brooksville", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT06276556" }, { "nct_id": "NCT01493531", "title": "Combining Lesinurad With Allopurinol in Inadequate Responders", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Gout" ], "interventions": [ { "name": "Lesinurad", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" }, { "name": "Allopurinol", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Ardea Biosciences, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "85 Years", "sex": "ALL", "summary": "18 Years to 85 Years" }, "enrollment_count": 610, "start_date": "2011-12", "completion_date": "2014-07", "has_results": true, "last_update_posted_date": "2016-05-26", "last_synced_at": "2026-09-30T08:41:41.516Z", "location_count": 88, "location_summary": "Mobile, Alabama • Chandler, Arizona • Mesa, Arizona + 76 more", "locations": [ { "city": "Mobile", "state": "Alabama" }, { "city": "Chandler", "state": "Arizona" }, { "city": "Mesa", "state": "Arizona" }, { "city": "Pheonix", "state": "Arizona" }, { "city": "Jonesboro", "state": "Arkansas" } ], "official_url": "https://clinicaltrials.gov/study/NCT01493531" } ] }