{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated+interferon+alfa-2a+%2B+Ribavirin&page=4",
    "query": {
      "intervention": "Pegylated interferon alfa-2a + Ribavirin",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 150,
    "total_pages": 15,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated+interferon+alfa-2a+%2B+Ribavirin&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pegylated+interferon+alfa-2a+%2B+Ribavirin&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-12T23:58:41.982Z",
  "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": "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": "2026-10-12T23:58:41.982Z",
      "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"
    },
    {
      "nct_id": "NCT00006164",
      "title": "Long Term Interferon for Patients Who Did Not Clear Hepatitis C Virus With Standard Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chronic Hepatitis c",
        "Cirrhosis, Liver",
        "Fibrosis, Liver",
        "Hepatic Cirrhosis"
      ],
      "interventions": [
        {
          "name": "Peginterferon alfa-2a + Ribavirin",
          "type": "DRUG"
        },
        {
          "name": "Peginterferon alfa-2a",
          "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": 1050,
      "start_date": "2000-06",
      "completion_date": "2009-10",
      "has_results": true,
      "last_update_posted_date": "2020-05-12",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 11,
      "location_summary": "Long Beach, California • Los Angeles, California • Denver, Colorado + 8 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00006164"
    },
    {
      "nct_id": "NCT01273064",
      "title": "Standard of Care (SOC) With or Without CTS-1027 in Hepatitis C (HCV) Null-Responders",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "CTS-1027",
          "type": "DRUG"
        },
        {
          "name": "pegylated interferon",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Conatus Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 114,
      "start_date": "2011-01",
      "completion_date": "2011-10",
      "has_results": true,
      "last_update_posted_date": "2012-06-11",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 45,
      "location_summary": "Birmingham, Alabama • Coronado, California • La Jolla, California + 33 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Coronado",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01273064"
    },
    {
      "nct_id": "NCT00475176",
      "title": "S-Adenosyl Methionine (SAMe) to Treat Patients With Chronic Hepatitis C",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Peginterferon alfa-2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        },
        {
          "name": "S-adenosyl methionine for Chronic Liver Disease",
          "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": 24,
      "start_date": "2007-05",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2013-07-05",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00475176"
    },
    {
      "nct_id": "NCT01479868",
      "title": "A Study to Assess the Safety, Tolerability and Efficacy of TMC435 Along With Pegylated Interferon Alpha-2a (Pegasys) and Ribavirin (Copegus) Triple Therapy in Chronic Hepatitis C Genotype-1 Infected Patients Co-infected With Human Immunodeficiency Virus-Type 1",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis C Virus Genotype-1"
      ],
      "interventions": [
        {
          "name": "TMC435",
          "type": "DRUG"
        },
        {
          "name": "Pegylated interferon alpha-2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen R&D Ireland",
      "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": 109,
      "start_date": "2011-10",
      "completion_date": "2013-08",
      "has_results": true,
      "last_update_posted_date": "2014-10-29",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 10,
      "location_summary": "Los Angeles, California • Washington D.C., District of Columbia • Orlando, Florida + 7 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01479868"
    },
    {
      "nct_id": "NCT01446250",
      "title": "Alisporivir (Deb025) and Boceprevir Triple Therapies in African American Participants Not Previously Treated for Chronic Hepatitis C Genotype 1",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Alisporivir",
          "type": "DRUG"
        },
        {
          "name": "Boceprevir",
          "type": "DRUG"
        },
        {
          "name": "Peginterferon alfa-2a",
          "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": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 8,
      "start_date": "2011-12",
      "completion_date": "2013-05",
      "has_results": true,
      "last_update_posted_date": "2017-01-16",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 2,
      "location_summary": "Beverly Hills, California • Baltimore, Maryland",
      "locations": [
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01446250"
    },
    {
      "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": "2026-10-12T23:58:41.982Z",
      "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"
    },
    {
      "nct_id": "NCT01483742",
      "title": "A Study of Ritonavir-Boosted Danoprevir and RO5024048 in Different Combinations in Null Responder or Treatment-Naïve Patients With Chronic Hepatitis C and Compensated Cirrhosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "RO5024048",
          "type": "DRUG"
        },
        {
          "name": "danoprevir",
          "type": "DRUG"
        },
        {
          "name": "peginterferon alfa-2a [Pegasys]",
          "type": "DRUG"
        },
        {
          "name": "ribavirin",
          "type": "DRUG"
        },
        {
          "name": "ritonavir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "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": 43,
      "start_date": "2012-04",
      "completion_date": "2013-09",
      "has_results": false,
      "last_update_posted_date": "2016-08-01",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 15,
      "location_summary": "Birmingham, Alabama • Anaheim, California • Coronado, California + 11 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Coronado",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01483742"
    },
    {
      "nct_id": "NCT01448044",
      "title": "Phase III BMS-790052 Add-On to Peg-Interferon Alfa-2a and Ribavirin in Naive Hepatitis C",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "BMS-790052 (NS5A Replication Complex Inhibitor)",
          "type": "DRUG"
        },
        {
          "name": "Placebo matching BMS-790052",
          "type": "DRUG"
        },
        {
          "name": "Pegylated-interferon alfa 2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "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": 152,
      "start_date": "2011-12",
      "completion_date": "2014-01",
      "has_results": true,
      "last_update_posted_date": "2015-10-12",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 4,
      "location_summary": "San Clemente, California • Worcester, Massachusetts • Providence, Rhode Island + 1 more",
      "locations": [
        {
          "city": "San Clemente",
          "state": "California"
        },
        {
          "city": "Worcester",
          "state": "Massachusetts"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        },
        {
          "city": "Annandale",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01448044"
    },
    {
      "nct_id": "NCT00720434",
      "title": "A Dose Ranging Study Of PF-00868554 In Combination With PEGASYS And COPEGUS In Patients With Chronic Hepatitis C Genotype 1 Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "PF-00868554",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "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": 35,
      "start_date": "2008-08",
      "completion_date": "2010-03",
      "has_results": true,
      "last_update_posted_date": "2013-08-26",
      "last_synced_at": "2026-10-12T23:58:41.982Z",
      "location_count": 9,
      "location_summary": "La Jolla, California • San Francisco, California • Orlando, Florida + 5 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Springfield",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00720434"
    }
  ]
}