{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated-interferon+Alfa-2a&page=4",
    "query": {
      "intervention": "Pegylated-interferon Alfa-2a",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 199,
    "total_pages": 20,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated-interferon+Alfa-2a&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated-interferon+Alfa-2a&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T16:56:40.913Z",
  "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": "NCT00078403",
      "title": "Pegylated Interferon Alfa-2a Maintenance Therapy and Liver Disease Progression in People Infected With Both HIV and Hepatitis C Virus (HCV)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HIV Infections",
        "Hepatitis C",
        "Liver Disease"
      ],
      "interventions": [
        {
          "name": "Peginterferon alfa-2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "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": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 333,
      "start_date": "2004-07",
      "completion_date": "2009-02",
      "has_results": true,
      "last_update_posted_date": "2021-11-08",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 36,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 23 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00078403"
    },
    {
      "nct_id": "NCT02113631",
      "title": "Comparative Effectiveness and Tolerability of Boceprevir vs Telaprevir",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hepatitis C, Chronic",
        "Cirrhosis"
      ],
      "interventions": [
        {
          "name": "Telaprevir",
          "type": "DRUG"
        },
        {
          "name": "Boceprevir",
          "type": "DRUG"
        },
        {
          "name": "Peg-IFN",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Louis Stokes VA Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2011-09",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2017-03-15",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02113631"
    },
    {
      "nct_id": "NCT01265511",
      "title": "Study of SCY-635, Pegasys and Copegus in Hepatitis C",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C Infection"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "SCY-635",
          "type": "DRUG"
        },
        {
          "name": "Pegasys",
          "type": "DRUG"
        },
        {
          "name": "Copegus",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Scynexis, Inc.",
      "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": 10,
      "start_date": "2010-11",
      "completion_date": "2011-10",
      "has_results": true,
      "last_update_posted_date": "2017-08-18",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 3,
      "location_summary": "San Francisco, California • Durham, North Carolina • San Antonio, Texas",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01265511"
    },
    {
      "nct_id": "NCT00537407",
      "title": "A Study of Debio 025 in Combination With PegIFN Alpha-2a and Ribavirin in Chronic HCV Patients Non-responders to Standard Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Debio 025",
          "type": "DRUG"
        },
        {
          "name": "Peg-IFNα2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Debiopharm International SA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 50,
      "start_date": "2007-09",
      "completion_date": "2010-04",
      "has_results": true,
      "last_update_posted_date": "2016-02-17",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 7,
      "location_summary": "La Jolla, California • Gainesville, Florida • Miami, Florida + 4 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00537407"
    },
    {
      "nct_id": "NCT01259817",
      "title": "Pegylated Interferon Alfa-2a Salvage Therapy in High Risk Polycythemia Vera (PV) or Essential Thrombocythemia (ET)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "High Risk Polycythemia Vera",
        "High Risk Essential Thrombocythemia"
      ],
      "interventions": [
        {
          "name": "PEGASYS",
          "type": "DRUG"
        },
        {
          "name": "Aspirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ronald Hoffman",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 135,
      "start_date": "2011-09",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2017-01-11",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 16,
      "location_summary": "Scottsdale, Arizona • Palo Alto, California • Washington D.C., District of Columbia + 10 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01259817"
    },
    {
      "nct_id": "NCT00703118",
      "title": "A Safety and Effectiveness Study of Telaprevir in Chronic, Genotype 1, Hepatitis C Patients That Failed Previous Standard Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "Telaprevir",
          "type": "DRUG"
        },
        {
          "name": "Peg-IFN-alfa-2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tibotec BVBA",
      "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": 663,
      "start_date": "2008-10",
      "completion_date": "2010-07",
      "has_results": true,
      "last_update_posted_date": "2014-01-22",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 31,
      "location_summary": "Birmingham, Alabama • Coronado, California • La Jolla, California + 28 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Coronado",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00703118"
    },
    {
      "nct_id": "NCT00207311",
      "title": "Study for the Treatment of Significant Steatosis With Xenical Followed by Treatment of Hepatitis C With Pegasys/Copegus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Fatty Liver",
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Xenical, Pegasys, Copegus",
          "type": "DRUG"
        },
        {
          "name": "Xenicare Program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "Brooke Army Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2005-08",
      "completion_date": "2009-05",
      "has_results": false,
      "last_update_posted_date": "2012-02-14",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 1,
      "location_summary": "Fort Sam Houston, Texas",
      "locations": [
        {
          "city": "Fort Sam Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00207311"
    },
    {
      "nct_id": "NCT00996216",
      "title": "Clinical Trial for Non-responders Who Previously Participated in Eltrombopag Studies TPL 103922 or TPL 108390",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Eltrombopag",
          "type": "DRUG"
        },
        {
          "name": "Antiviral therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2009-09",
      "completion_date": "2013-02",
      "has_results": true,
      "last_update_posted_date": "2013-12-06",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 6,
      "location_summary": "San Diego, California • New Haven, Connecticut • Honolulu, Hawaii + 3 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Manhasset",
          "state": "New York"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00996216"
    },
    {
      "nct_id": "NCT01329978",
      "title": "Sofosbuvir With Pegylated Interferon and Ribavirin Hepatitis C Virus (HCV) Genotypes 1,4,5,6",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "Sofosbuvir",
          "type": "DRUG"
        },
        {
          "name": "RBV",
          "type": "DRUG"
        },
        {
          "name": "PEG",
          "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": 332,
      "start_date": "2011-03",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2014-05-26",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 44,
      "location_summary": "Montgomery, Alabama • Jonesboro, Arkansas • Anaheim, California + 36 more",
      "locations": [
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Burbank",
          "state": "California"
        },
        {
          "city": "Coronado",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01329978"
    },
    {
      "nct_id": "NCT00087607",
      "title": "Peak Study - A Study of Pegasys (Peginterferon Alfa-2a (40KD)) in Combination With Copegus (Ribavirin) in Interferon-Naive Patients With Chronic Hepatitis C (CHC).",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "Ribavirin",
          "type": "DRUG"
        },
        {
          "name": "Peginterferon alfa-2b (PEG-Intron)",
          "type": "DRUG"
        },
        {
          "name": "Peginterferon alfa-2a [Pegasys]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 385,
      "start_date": "2004-01",
      "completion_date": "2006-04",
      "has_results": true,
      "last_update_posted_date": "2016-07-01",
      "last_synced_at": "2026-10-09T16:56:40.913Z",
      "location_count": 41,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Sacramento, California + 36 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00087607"
    }
  ]
}