{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated+interferon+alfa+%28pegIFN%29", "query": { "intervention": "Pegylated interferon alfa (pegIFN)" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 11, "total_pages": 2, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated+interferon+alfa+%28pegIFN%29&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-09-29T05:26:32.866Z", "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": "NCT00056862", "title": "Low-Dose Peginterferon and Ribavirin to Treat Chronic Hepatitis C in Patients Infected With HCV Genotype 2 or 3", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Hepatitis C" ], "interventions": [ { "name": "Peginterferon alfa-2a", "type": "DRUG" }, { "name": "Ribavirin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 58, "start_date": "2003-03", "completion_date": "2010-06", "has_results": true, "last_update_posted_date": "2013-12-06", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 1, "location_summary": "Bethesda, Maryland", "locations": [ { "city": "Bethesda", "state": "Maryland" } ], "official_url": "https://clinicaltrials.gov/study/NCT00056862" }, { "nct_id": "NCT01358864", "title": "Efficacy and Safety of BI 201335 (Faldaprevir) in Combination With Pegylated Interferon-alpha and Ribavirin in Treatment-Experienced Genotype 1 Hepatitis C Infected Patients (STARTverso 3)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C, Chronic" ], "interventions": [ { "name": "BI 201335", "type": "DRUG" }, { "name": "Pegylated Interferon-alpha (IFN)", "type": "DRUG" }, { "name": "Ribavirin (RBV)", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Boehringer Ingelheim", "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": 678, "start_date": "2011-06", "completion_date": "2014-05", "has_results": true, "last_update_posted_date": "2016-08-29", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 18, "location_summary": "North Little Rock, Arkansas • Englewood, Colorado • Palm Harbor, Florida + 14 more", "locations": [ { "city": "North Little Rock", "state": "Arkansas" }, { "city": "Englewood", "state": "Colorado" }, { "city": "Palm Harbor", "state": "Florida" }, { "city": "Columbus", "state": "Georgia" }, { "city": "Chicago", "state": "Illinois" } ], "official_url": "https://clinicaltrials.gov/study/NCT01358864" }, { "nct_id": "NCT00774397", "title": "Antiviral Effect, Safety, and Pharmacokinetics of BI201335 +PegIFN/RBV in HCV-GT1 (SILEN-C1&2)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis C, Chronic" ], "interventions": [ { "name": "BI 201335 NA 240 mg QD / LI", "type": "DRUG" }, { "name": "PegIFN/RBV", "type": "DRUG" }, { "name": "BI 201335 NA 120mg QD / LI", "type": "DRUG" }, { "name": "BI 201335 NA 240 mg QD", "type": "DRUG" }, { "name": "BI 201335 NA 240 mg BID", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Boehringer Ingelheim", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 719, "start_date": "2008-10", "completion_date": null, "has_results": true, "last_update_posted_date": "2015-11-16", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 10, "location_summary": "San Francisco, California • Chicago, Illinois • Lutherville, Maryland + 5 more", "locations": [ { "city": "San Francisco", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Chicago", "state": "Illinois" }, { "city": "Lutherville", "state": "Maryland" }, { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT00774397" }, { "nct_id": "NCT03575208", "title": "Hepatitis B Immune Globulin (HBIg) to Restore Immune Control in People With Chronic Hepatitis B", "overall_status": "WITHDRAWN", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Chronic Hepatitis B" ], "interventions": [ { "name": "hepatitis B immune globulin (HBIg)", "type": "BIOLOGICAL" }, { "name": "Pegylated interferon alfa (pegIFN)", "type": "DRUG" } ], "intervention_types": [ "BIOLOGICAL", "DRUG" ], "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 0, "start_date": "2019-02-13", "completion_date": "2022-03-29", "has_results": false, "last_update_posted_date": "2022-04-06", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 1, "location_summary": "Bethesda, Maryland", "locations": [ { "city": "Bethesda", "state": "Maryland" } ], "official_url": "https://clinicaltrials.gov/study/NCT03575208" }, { "nct_id": "NCT01399619", "title": "Phase III Trial of BI 201335 (Faldaprevir) in Treatment Naive (TN) and Relapser Hepatitis C Virus (HCV)-Human Immunodeficiency Virus (HIV) Coinfected Patients (STARTverso 4)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C, Chronic" ], "interventions": [ { "name": "PegIFN/RBV", "type": "DRUG" }, { "name": "BI201335", "type": "DRUG" }, { "name": "BI201335 24W", "type": "DRUG" }, { "name": "Bi 201335", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Boehringer Ingelheim", "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": 310, "start_date": "2011-09", "completion_date": "2014-06", "has_results": true, "last_update_posted_date": "2016-08-29", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 22, "location_summary": "Birmingham, Alabama • Palm Springs, California • San Francisco, California + 17 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Palm Springs", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "Fort Lauderdale", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01399619" }, { "nct_id": "NCT01297270", "title": "Efficacy and Safety of BI 201335 (Faldaprevir) in Combination With Pegylated Interferon-alpha and Ribavirin in Treatment-naïve Genotype 1 Hepatitis C Infected Patients (STARTverso 2)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C" ], "interventions": [ { "name": "BI201335", "type": "DRUG" }, { "name": "PegIFN/RBV", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Boehringer Ingelheim", "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": 658, "start_date": "2011-04", "completion_date": "2014-04", "has_results": true, "last_update_posted_date": "2015-09-18", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 78, "location_summary": "Birmingham, Alabama • Dothan, Alabama • Phoenix, Arizona + 58 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Birmingham", "state": "Alabama" }, { "city": "Dothan", "state": "Alabama" }, { "city": "Phoenix", "state": "Arizona" }, { "city": "North Little Rock", "state": "Arkansas" } ], "official_url": "https://clinicaltrials.gov/study/NCT01297270" }, { "nct_id": "NCT01330316", "title": "A Rollover Study of BI 201335 in Combination With Pegylated Interferon-alpha and Ribavirin in Treatment-experienced Genotype 1 Hepatitis C Infected Patients", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C" ], "interventions": [ { "name": "BI 201335", "type": "DRUG" }, { "name": "PegIFN/RBV", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Boehringer Ingelheim", "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": 119, "start_date": "2011-07", "completion_date": "2014-06", "has_results": true, "last_update_posted_date": "2016-06-30", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 20, "location_summary": "Birmingham, Alabama • North Little Rock, Arkansas • Los Angeles, California + 16 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "North Little Rock", "state": "Arkansas" }, { "city": "Los Angeles", "state": "California" }, { "city": "Oceanside", "state": "California" }, { "city": "Fort Lauderdale", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01330316" }, { "nct_id": "NCT04676724", "title": "Study of Sequential GSK3228836 and Peginterferon Treatment in Participants With Chronic Hepatitis B (CHB)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis B" ], "interventions": [ { "name": "GSK3228836", "type": "DRUG" }, { "name": "PegIFN", "type": "DRUG" }, { "name": "NA therapy", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "GlaxoSmithKline", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "18 Years to 75 Years" }, "enrollment_count": 108, "start_date": "2021-01-28", "completion_date": "2023-02-17", "has_results": true, "last_update_posted_date": "2024-05-02", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 4, "location_summary": "Sacramento, California • Iowa City, Iowa • Detroit, Michigan + 1 more", "locations": [ { "city": "Sacramento", "state": "California" }, { "city": "Iowa City", "state": "Iowa" }, { "city": "Detroit", "state": "Michigan" }, { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT04676724" }, { "nct_id": "NCT00984620", "title": "Short Term Treatment With BI 201335, Peginterferon-alpha 2a and Ribavirin in Hepatitis c Virus Genotype-1 Treatment-naïve Patients (SILEN-C3)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Hepatitis C" ], "interventions": [ { "name": "BI 201335", "type": "DRUG" }, { "name": "Pegylated Interferon-alpha (IFN)", "type": "DRUG" }, { "name": "Ribavirin (RBV)", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Boehringer Ingelheim", "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": 160, "start_date": "2009-09", "completion_date": null, "has_results": true, "last_update_posted_date": "2015-09-07", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 6, "location_summary": "Tulepo, Mississippi • New York, New York • Germantown, Tennessee + 3 more", "locations": [ { "city": "Tulepo", "state": "Mississippi" }, { "city": "New York", "state": "New York" }, { "city": "Germantown", "state": "Tennessee" }, { "city": "Jackson", "state": "Tennessee" }, { "city": "Nashville", "state": "Tennessee" } ], "official_url": "https://clinicaltrials.gov/study/NCT00984620" }, { "nct_id": "NCT01581203", "title": "Phase III Hallmark DUAL: ASV+DCV (Nulls/Partials, Intolerants/Ineligibles. Naives)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Hepatitis C Virus" ], "interventions": [ { "name": "Asunaprevir (ASV)", "type": "DRUG" }, { "name": "Daclatasvir (DCV)", "type": "DRUG" }, { "name": "Pegylated-interferon alfa 2a (PegIFN)", "type": "DRUG" }, { "name": "Ribavirin (RBV)", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Bristol-Myers Squibb", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 748, "start_date": "2012-05", "completion_date": "2014-09", "has_results": false, "last_update_posted_date": "2015-10-09", "last_synced_at": "2026-09-29T05:26:32.866Z", "location_count": 18, "location_summary": "Montgomery, Alabama • La Jolla, California • Los Angeles, California + 14 more", "locations": [ { "city": "Montgomery", "state": "Alabama" }, { "city": "La Jolla", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Aurora", "state": "Colorado" }, { "city": "Gainesville", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT01581203" } ] }