{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=PSI-7977+%28GS7977%29", "query": { "intervention": "PSI-7977 (GS7977)" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 25, "total_pages": 3, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=PSI-7977+%28GS7977%29&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-09-27T22:15:26.078Z", "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": "NCT01667731", "title": "Efficacy and Safety of Sofosbuvir Plus Ribavirin in Chronic Genotype 1, 2 and 3 Hepatitis C Virus (HCV) and Human Immunodeficiency Virus (HIV) Co-infected Adults", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C", "Human Immunodeficiency Virus" ], "interventions": [ { "name": "SOF", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 224, "start_date": "2012-07", "completion_date": "2014-02", "has_results": true, "last_update_posted_date": "2014-11-21", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 26, "location_summary": "Birmingham, Alabama • Coronado, California • Los Angeles, California + 23 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Coronado", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Lutherville", "state": "California" }, { "city": "Oakland", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT01667731" }, { "nct_id": "NCT01435044", "title": "Safety Study of Regimens of Sofosbuvir, GS-0938, and Ribavirin in Patients With Chronic Hepatitis C Infection", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis C, Chronic" ], "interventions": [ { "name": "Sofosbuvir", "type": "DRUG" }, { "name": "GS-0938", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" }, { "name": "Placebo to match sofosbuvir", "type": "DRUG" }, { "name": "Placebo to match GS-0938", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 239, "start_date": "2011-09", "completion_date": "2013-05", "has_results": false, "last_update_posted_date": "2014-02-06", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 42, "location_summary": "Montgomery, Alabama • Bakersfield, California • Coronado, California + 33 more", "locations": [ { "city": "Montgomery", "state": "Alabama" }, { "city": "Bakersfield", "state": "California" }, { "city": "Coronado", "state": "California" }, { "city": "La Mesa", "state": "California" }, { "city": "Los Angeles", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT01435044" }, { "nct_id": "NCT01188772", "title": "Sofosbuvir in Combination With Pegylated Interferon and Ribavirin and in Treatment-Naive Hepatitis C-infected Patients", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis C Virus" ], "interventions": [ { "name": "Sofosbuvir", "type": "DRUG" }, { "name": "Placebo to match sofosbuvir", "type": "DRUG" }, { "name": "PEG", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "70 Years", "sex": "ALL", "summary": "18 Years to 70 Years" }, "enrollment_count": 147, "start_date": "2010-08", "completion_date": "2012-05", "has_results": true, "last_update_posted_date": "2014-04-21", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 22, "location_summary": "Montgomery, Alabama • Anaheim, California • Coronado, California + 17 more", "locations": [ { "city": "Montgomery", "state": "Alabama" }, { "city": "Anaheim", "state": "California" }, { "city": "Coronado", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "San Francisco", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT01188772" }, { "nct_id": "NCT01962441", "title": "SOF (Sovaldi®) +RBV for 16 or 24 Weeks and SOF+RBV+Peg-IFN for 12 Weeks in Adults With Genotype 2 or 3 Chronic HCV Infection", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C" ], "interventions": [ { "name": "SOF", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" }, { "name": "Peg-IFN", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 601, "start_date": "2013-09-24", "completion_date": "2016-07-07", "has_results": true, "last_update_posted_date": "2017-06-20", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 23, "location_summary": "Riverside, California • San Diego, California • San Francisco, California + 19 more", "locations": [ { "city": "Riverside", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Aurora", "state": "Colorado" }, { "city": "Englewood", "state": "Colorado" } ], "official_url": "https://clinicaltrials.gov/study/NCT01962441" }, { "nct_id": "NCT01604850", "title": "Sofosbuvir + Ribavirin for 12 or 16 Weeks in Treatment Experienced Subjects With Chronic Genotype 2 or 3 HCV Infection (FUSION)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Chronic Hepatitis C" ], "interventions": [ { "name": "SOF", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" }, { "name": "Placebo to match SOF", "type": "DRUG" }, { "name": "Placebo to match RBV", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 202, "start_date": "2012-06", "completion_date": "2013-05", "has_results": true, "last_update_posted_date": "2014-05-28", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 51, "location_summary": "Coronado, California • Los Angeles, California • San Diego, California + 41 more", "locations": [ { "city": "Coronado", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "San Diego", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT01604850" }, { "nct_id": "NCT01687270", "title": "Safety and Efficacy of Sofosbuvir and Ribavirin in Adults With Recurrent Chronic Hepatitis C Virus (HCV) Post Liver Transplant", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Recurrent Chronic Hepatitis C Virus", "Post Liver Transplant" ], "interventions": [ { "name": "Sofosbuvir", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 40, "start_date": "2012-11", "completion_date": "2014-08", "has_results": true, "last_update_posted_date": "2014-12-19", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 8, "location_summary": "San Francisco, California • Indianapolis, Indiana • Kansas City, Kansas + 4 more", "locations": [ { "city": "San Francisco", "state": "California" }, { "city": "Indianapolis", "state": "Indiana" }, { "city": "Kansas City", "state": "Kansas" }, { "city": "Boston", "state": "Massachusetts" }, { "city": "Ann Arbor", "state": "Michigan" } ], "official_url": "https://clinicaltrials.gov/study/NCT01687270" }, { "nct_id": "NCT02201953", "title": "Comparison of Sofosbuvir/Velpatasvir Fixed Dose Combination for 12 Weeks With Sofosbuvir and Ribavirin for 24 Weeks in Adults With Chronic Genotype 3 HCV Infection", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C Virus Infection" ], "interventions": [ { "name": "SOF/VEL", "type": "DRUG" }, { "name": "SOF", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 558, "start_date": "2014-07", "completion_date": "2015-12", "has_results": true, "last_update_posted_date": "2018-11-16", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 25, "location_summary": "Los Angeles, California • Sacramento, California • San Diego, California + 21 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Sacramento", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "Aurora", "state": "Colorado" } ], "official_url": "https://clinicaltrials.gov/study/NCT02201953" }, { "nct_id": "NCT02253550", "title": "Simeprevir in Combination With Sofosbuvir in Treatment-Naïve or -Experienced Adults With Chronic Genotype 4 Hepatitis C Virus Infection", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Chronic Hepatitis C" ], "interventions": [ { "name": "Simeprevir", "type": "DRUG" }, { "name": "Sofosbuvir", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Peter J. Ruane, M.D.", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 30, "start_date": "2014-10", "completion_date": "2016-01", "has_results": false, "last_update_posted_date": "2016-02-24", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 1, "location_summary": "Los Angeles, California", "locations": [ { "city": "Los Angeles", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT02253550" }, { "nct_id": "NCT01559844", "title": "Efficacy of Sofosbuvir With Ribavirin Administered Pre-Transplant in Preventing Hepatitis C Virus (HCV) Recurrence Post-Transplant", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis C", "Hepatocellular Carcinoma" ], "interventions": [ { "name": "Sofosbuvir", "type": "DRUG" }, { "name": "Ribavirin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 61, "start_date": "2012-03", "completion_date": "2014-10", "has_results": true, "last_update_posted_date": "2016-07-27", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 13, "location_summary": "Los Angeles, California • San Diego, California • San Francisco, California + 10 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Aurora", "state": "Colorado" }, { "city": "Miami", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01559844" }, { "nct_id": "NCT01909804", "title": "Safety and Efficacy of Sofosbuvir Plus Velpatasvir With or Without Ribavirin in Treatment-experienced Subjects With Chronic HCV Infection", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis C" ], "interventions": [ { "name": "SOF", "type": "DRUG" }, { "name": "VEL", "type": "DRUG" }, { "name": "RBV", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Gilead Sciences", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 323, "start_date": "2013-06", "completion_date": "2014-08", "has_results": true, "last_update_posted_date": "2018-11-15", "last_synced_at": "2026-09-27T22:15:26.078Z", "location_count": 40, "location_summary": "Long Beach, California • Los Angeles, California • Pasadena, California + 37 more", "locations": [ { "city": "Long Beach", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Pasadena", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "Denver", "state": "Colorado" } ], "official_url": "https://clinicaltrials.gov/study/NCT01909804" } ] }