{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dapsone", "query": { "intervention": "Dapsone" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 42, "total_pages": 5, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dapsone&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-09-05T11:24:18.099Z", "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": "NCT02865005", "title": "Trial of Dapsone 5.0% Gel in the Treatment of Acne Vulgaris", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Acne Vulgaris" ], "interventions": [ { "name": "Dapsone 5.0% Gel (SEEGPharm)", "type": "DRUG" }, { "name": "Placebo", "type": "OTHER" }, { "name": "Dapsone 5.0% Gel (Allergan)", "type": "DRUG" } ], "intervention_types": [ "DRUG", "OTHER" ], "sponsor": "Seegpharm S.A.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": "40 Years", "sex": "ALL", "summary": "12 Years to 40 Years" }, "enrollment_count": 2361, "start_date": "2016-02", "completion_date": "2016-12", "has_results": false, "last_update_posted_date": "2016-12-20", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 35, "location_summary": "Encino, California • Fullerton, California • La Mesa, California + 29 more", "locations": [ { "city": "Encino", "state": "California" }, { "city": "Fullerton", "state": "California" }, { "city": "La Mesa", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Los Angeles", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT02865005" }, { "nct_id": "NCT00000802", "title": "A Randomized, Comparative Study of Daily Dapsone and Daily Atovaquone for Prophylaxis Against PCP in HIV-Infected Patients Who Are Intolerant of Trimethoprim and/or Sulfonamides", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Pneumonia, Pneumocystis Carinii", "HIV Infections" ], "interventions": [ { "name": "Atovaquone", "type": "DRUG" }, { "name": "Dapsone", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "13 Years", "maximum_age": null, "sex": "ALL", "summary": "13 Years and older" }, "enrollment_count": 700, "start_date": null, "completion_date": "1997-07", "has_results": false, "last_update_posted_date": "2021-11-04", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 43, "location_summary": "Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 30 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Los Angeles", "state": "California" }, { "city": "Palo Alto", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "San Francisco", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00000802" }, { "nct_id": "NCT00002283", "title": "A Comparison of Dapsone and Trimethoprim-Sulfamethoxazole in the Treatment of Pneumocystis Carinii Pneumonia (PCP) in Patients With AIDS", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Pneumonia, Pneumocystis Carinii", "HIV Infections" ], "interventions": [ { "name": "Trimethoprim", "type": "DRUG" }, { "name": "Sulfamethoxazole", "type": "DRUG" }, { "name": "Dapsone", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Jacobus Pharmaceutical", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": null, "start_date": null, "completion_date": null, "has_results": false, "last_update_posted_date": "2005-06-24", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 1, "location_summary": "Princeton, New Jersey", "locations": [ { "city": "Princeton", "state": "New Jersey" } ], "official_url": "https://clinicaltrials.gov/study/NCT00002283" }, { "nct_id": "NCT00429533", "title": "Efficacy of Dapsone as a Steroid Sparing Agent in Pemphigus Vulgaris", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Pemphigus Vulgaris" ], "interventions": [ { "name": "Dapsone", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Jacobus Pharmaceutical", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "80 Years", "sex": "ALL", "summary": "18 Years to 80 Years" }, "enrollment_count": 48, "start_date": "1996-11", "completion_date": "2004-02", "has_results": false, "last_update_posted_date": "2007-02-05", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 8, "location_summary": "Chicago, Illinois • Detroit, Michigan • Camden, New Jersey + 4 more", "locations": [ { "city": "Chicago", "state": "Illinois" }, { "city": "Chicago", "state": "Illinois" }, { "city": "Detroit", "state": "Michigan" }, { "city": "Camden", "state": "New Jersey" }, { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT00429533" }, { "nct_id": "NCT00000826", "title": "Effect of Fluconazole, Clarithromycin, and Rifabutin on the Pharmacokinetics of Sulfamethoxazole-Trimethoprim and Dapsone and Their Hydroxylamine Metabolites", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Bacterial Infections", "Mycoses", "HIV Infections" ], "interventions": [ { "name": "Clarithromycin", "type": "DRUG" }, { "name": "Rifabutin", "type": "DRUG" }, { "name": "Sulfamethoxazole-Trimethoprim", "type": "DRUG" }, { "name": "Dapsone", "type": "DRUG" }, { "name": "Fluconazole", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 48, "start_date": null, "completion_date": "1999-05", "has_results": false, "last_update_posted_date": "2021-10-29", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 2, "location_summary": "San Francisco, California • Seattle, Washington", "locations": [ { "city": "San Francisco", "state": "California" }, { "city": "Seattle", "state": "Washington" } ], "official_url": "https://clinicaltrials.gov/study/NCT00000826" }, { "nct_id": "NCT00002120", "title": "Randomized Phase I Study of Trimetrexate Glucuronate (TMTX) With Leucovorin (LCV) Protection Plus Dapsone Versus Trimethoprim / Sulfamethoxazole (TMP/SMX) for Treatment of Moderately Severe Episodes of Pneumocystis Carinii Pneumonia", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Pneumonia, Pneumocystis Carinii", "HIV Infections" ], "interventions": [ { "name": "Trimetrexate glucuronate", "type": "DRUG" }, { "name": "Trimethoprim", "type": "DRUG" }, { "name": "Sulfamethoxazole", "type": "DRUG" }, { "name": "Dapsone", "type": "DRUG" }, { "name": "Leucovorin calcium", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "U.S. Bioscience", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "13 Years", "maximum_age": null, "sex": "ALL", "summary": "13 Years and older" }, "enrollment_count": 20, "start_date": null, "completion_date": null, "has_results": false, "last_update_posted_date": "2005-06-24", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 1, "location_summary": "Los Angeles, California", "locations": [ { "city": "Los Angeles", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00002120" }, { "nct_id": "NCT00000640", "title": "A Phase III Comparative Study of Dapsone / Trimethoprim and Clindamycin / Primaquine Versus Sulfamethoxazole / Trimethoprim in the Treatment of Mild-to-Moderate PCP in Patients With AIDS", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Pneumonia, Pneumocystis Carinii", "HIV Infections" ], "interventions": [ { "name": "Primaquine", "type": "DRUG" }, { "name": "Sulfamethoxazole-Trimethoprim", "type": "DRUG" }, { "name": "Dapsone", "type": "DRUG" }, { "name": "Clindamycin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "13 Years", "maximum_age": null, "sex": "ALL", "summary": "13 Years and older" }, "enrollment_count": 290, "start_date": null, "completion_date": "1994-09", "has_results": false, "last_update_posted_date": "2021-11-03", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 32, "location_summary": "Los Angeles, California • Palo Alto, California • San Francisco, California + 23 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "Palo Alto", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "San Jose", "state": "California" }, { "city": "San Mateo", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00000640" }, { "nct_id": "NCT00141037", "title": "Steroid-Free Versus Steroid-Based Immunosuppression in Pediatric Renal (Kidney) Transplantation", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1", "PHASE2" ], "conditions": [ "Kidney Diseases", "Kidney Transplantation", "Kidney Transplant", "Renal Transplantation", "Renal Transplant" ], "interventions": [ { "name": "Daclizumab", "type": "DRUG" }, { "name": "Mycophenolate mofetil (MMF)", "type": "DRUG" }, { "name": "Prednisone", "type": "DRUG" }, { "name": "Tacrolimus", "type": "DRUG" }, { "name": "Ganciclovir", "type": "DRUG" }, { "name": "Valganciclovir", "type": "DRUG" }, { "name": "Trimethoprim and sulfamethoxazole", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": null, "maximum_age": "21 Years", "sex": "ALL", "summary": "Up to 21 Years" }, "enrollment_count": 130, "start_date": "2004-03", "completion_date": "2010-11", "has_results": true, "last_update_posted_date": "2016-11-29", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 12, "location_summary": "Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 8 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Los Angeles", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Palo Alto", "state": "California" }, { "city": "San Francisco", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00141037" }, { "nct_id": "NCT00249782", "title": "A Phase II, Randomized Study of ACZONE™ (Dapsone) Gel, 5% for Papulopustular Rosacea.", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Rosacea" ], "interventions": [ { "name": "Vehicle control, 2x/day", "type": "DRUG" }, { "name": "ACZONE (dapsone) Gel, 5%, 2x/day", "type": "DRUG" }, { "name": "ACZONE (dapsone) Gel, 5%, 1x/day", "type": "DRUG" }, { "name": "MetroGel® (metronidazole gel), 1.0% 1x/day", "type": "DRUG" }, { "name": "ACZONE (dapsone) Gel, 5%, 1x/day (AM) + MetroGel (metronidazole gel), 1.0%, 1x/day (PM)", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Allergan", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 400, "start_date": "2005-11", "completion_date": "2006-05", "has_results": false, "last_update_posted_date": "2011-05-30", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 26, "location_summary": "Birmingham, Alabama • Tucson, Arizona • Fremont, California + 21 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Tucson", "state": "Arizona" }, { "city": "Fremont", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "Santa Monica", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00249782" }, { "nct_id": "NCT02117739", "title": "Photoallergy Potential of Dapsone Gel in Healthy Volunteers", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy Volunteers" ], "interventions": [ { "name": "dapsone gel", "type": "DRUG" }, { "name": "dapsone gel vehicle", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Almirall, S.A.", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 58, "start_date": "2014-04", "completion_date": "2014-07", "has_results": false, "last_update_posted_date": "2018-10-09", "last_synced_at": "2026-09-05T11:24:18.099Z", "location_count": 1, "location_summary": "Fair Lawn, New Jersey", "locations": [ { "city": "Fair Lawn", "state": "New Jersey" } ], "official_url": "https://clinicaltrials.gov/study/NCT02117739" } ] }