{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=interferon+alfa-2a&page=3",
    "query": {
      "intervention": "interferon alfa-2a",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 161,
    "total_pages": 17,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=interferon+alfa-2a&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=interferon+alfa-2a&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-15T08:09:48.664Z",
  "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": "NCT00077649",
      "title": "A Study of PEGASYS (Peginterferon Alfa-2a (40KD)) in Combination With COPEGUS (Ribavirin) in Interferon-Naive Patients With Chronic Hepatitis C Infection (CHC).",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "ribavirin [Copegus]",
          "type": "DRUG"
        },
        {
          "name": "peginterferon alfa-2a (PEG-IFN 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": 188,
      "start_date": "2004-01",
      "completion_date": "2005-12",
      "has_results": true,
      "last_update_posted_date": "2016-04-18",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 24,
      "location_summary": "La Jolla, California • Long Beach, California • San Diego, California + 20 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Farmington",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00077649"
    },
    {
      "nct_id": "NCT01369212",
      "title": "Combination Therapy of Pegylated Interferon Alfa-2a and Tenofovir Versus Tenofovir Monotherapy in Chronic Hepatitis B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Tenofovir",
          "type": "DRUG"
        },
        {
          "name": "Peginterferon-alfa 2a and tenofovir",
          "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": 201,
      "start_date": "2012-11",
      "completion_date": "2021-03-08",
      "has_results": true,
      "last_update_posted_date": "2023-04-28",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 20,
      "location_summary": "Los Angeles, California • San Francisco, California • Honolulu, Hawaii + 11 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01369212"
    },
    {
      "nct_id": "NCT01471574",
      "title": "Safety and Efficacy Study of Daclatasvir (BMS-790052) Plus Pegylated Interferon-Alfa 2a and Ribavirin in Patients Coinfected With Untreated Hepatitis C Virus and HIV Virus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis C, Genotype 1"
      ],
      "interventions": [
        {
          "name": "Daclatasvir",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        },
        {
          "name": "PEG-Interferon alfa 2a",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "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": 549,
      "start_date": "2011-12",
      "completion_date": "2014-09",
      "has_results": true,
      "last_update_posted_date": "2016-01-29",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 23,
      "location_summary": "Birmingham, Alabama • La Jolla, California • Los Angeles, California + 18 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palm Springs",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01471574"
    },
    {
      "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": "2026-11-15T08:09:48.664Z",
      "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": "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": "2026-11-15T08:09:48.664Z",
      "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": "NCT00038974",
      "title": "Hepatitis C Antiviral Resistance in African-Americans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "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": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 401,
      "start_date": "2002-08",
      "completion_date": "2005-11",
      "has_results": false,
      "last_update_posted_date": "2017-08-03",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 8,
      "location_summary": "San Francisco, California • Miami, Florida • Chicago, Illinois + 5 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00038974"
    },
    {
      "nct_id": "NCT00882908",
      "title": "A Study of TMC435 in Combination With Pegylated Interferon Alp\\Fa-2a and Ribavirin in Patients Infected With Genotype 1 Hepatitis C Virus Who Never Received Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "TMC435",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin (R)",
          "type": "DRUG"
        },
        {
          "name": "PegIFNα-2a (P)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tibotec Pharmaceuticals, 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": 386,
      "start_date": "2009-06",
      "completion_date": "2011-04",
      "has_results": true,
      "last_update_posted_date": "2014-06-16",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 12,
      "location_summary": "Los Angeles, California • Jacksonville, Florida • Orlando, Florida + 9 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Palm Harbor",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00882908"
    },
    {
      "nct_id": "NCT06079879",
      "title": "A Study of Bomedemstat (IMG-7289/MK-3543) Compared to Best Available Therapy (BAT) in Participants With Essential Thrombocythemia and an Inadequate Response or Intolerance of Hydroxyurea (MK-3543-006)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Essential Thrombocythemia"
      ],
      "interventions": [
        {
          "name": "Bomedemstat",
          "type": "DRUG"
        },
        {
          "name": "Anagrelide",
          "type": "DRUG"
        },
        {
          "name": "Busulfan",
          "type": "DRUG"
        },
        {
          "name": "Interferon alfa/pegylated interferon alfa 2a/pegylated interferon alfa 2b",
          "type": "DRUG"
        },
        {
          "name": "Ruxolitinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Merck Sharp & Dohme LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 340,
      "start_date": "2023-12-31",
      "completion_date": "2028-08-18",
      "has_results": false,
      "last_update_posted_date": "2026-10-02",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 15,
      "location_summary": "Glendale, Arizona • Glendale, California • Stanford, California + 12 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06079879"
    },
    {
      "nct_id": "NCT01573351",
      "title": "Phase III Hallmark QUAD: ASV+DCV+Peg+Rib (Nulls/Partials)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis C Virus"
      ],
      "interventions": [
        {
          "name": "Asunaprevir",
          "type": "DRUG"
        },
        {
          "name": "Daclatasvir",
          "type": "DRUG"
        },
        {
          "name": "Peg-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": 398,
      "start_date": "2012-05",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2015-10-09",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 20,
      "location_summary": "Montgomery, Alabama • La Jolla, California • Los Angeles, California + 16 more",
      "locations": [
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Englewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01573351"
    },
    {
      "nct_id": "NCT00606086",
      "title": "Safety and Efficacy of the Therapeutic Vaccine GI-5005 Combined With Pegylated Interferon Plus Ribavirin Standard of Care Therapy Versus Standard of Care Alone in Patients With Genotype 1 Chronic Hepatitis C Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Genotype 1 Chronic Hepatitis C"
      ],
      "interventions": [
        {
          "name": "GI-5005",
          "type": "DRUG"
        },
        {
          "name": "Pegylated Interferon and Ribavirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlobeImmune",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 140,
      "start_date": "2007-12",
      "completion_date": "2012-11",
      "has_results": true,
      "last_update_posted_date": "2014-06-27",
      "last_synced_at": "2026-11-15T08:09:48.664Z",
      "location_count": 25,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • La Jolla, California + 21 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00606086"
    }
  ]
}