{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Copegus+placebo",
    "query": {
      "intervention": "Copegus placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 84,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Copegus+placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T16:05:59.081Z",
  "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": "NCT01257204",
      "title": "Study in Genotype 2 or 3 Patients With Chronic Hepatitis Virus Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C Virus"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Daclatasvir",
          "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": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 196,
      "start_date": "2010-12",
      "completion_date": "2012-09",
      "has_results": true,
      "last_update_posted_date": "2015-12-14",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 4,
      "location_summary": "Los Angeles, California • Baltimore, Maryland • Tulsa, Oklahoma + 1 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Tulsa",
          "state": "Oklahoma"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01257204"
    },
    {
      "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": "2026-09-05T16:05:59.081Z",
      "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": "NCT01180790",
      "title": "Safety, Tolerability, and Antiviral Activity of ACH-0141625 or Placebo in Combination With Peginterferon and Ribavirin in Hepatitis C Virus (HCV) Positive Participants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "ACH-0141625 (Sovaprevir)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Pegylated Interferon alpha-2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Alexion 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": 122,
      "start_date": "2010-09",
      "completion_date": "2013-04",
      "has_results": true,
      "last_update_posted_date": "2023-08-30",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 15,
      "location_summary": "Los Angeles, California • San Francisco, California • Bradenton, Florida + 11 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01180790"
    },
    {
      "nct_id": "NCT01542788",
      "title": "Sofosbuvir + Ribavirin for 12 Weeks in Subjects With Chronic Genotype 2 or 3 Hepatitis C Infection Who Are Interferon Intolerant, Interferon Ineligible or Unwilling to Take Interferon",
      "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": 278,
      "start_date": "2012-03",
      "completion_date": "2013-02",
      "has_results": true,
      "last_update_posted_date": "2014-05-19",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 50,
      "location_summary": "Birmingham, Alabama • Coronado, California • Los Angeles, California + 40 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Coronado",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01542788"
    },
    {
      "nct_id": "NCT01074008",
      "title": "A Randomized Study to Evaluate the Safety, Tolerability and Antiviral Activity of ABT-450, ABT-333 and ABT-072",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C",
        "HCV",
        "Chronic Hepatitis C Infection",
        "Hepatitis C Genotype 1"
      ],
      "interventions": [
        {
          "name": "ABT-450",
          "type": "DRUG"
        },
        {
          "name": "ABT-072",
          "type": "DRUG"
        },
        {
          "name": "ABT-333",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Peginterferon alpha-2a",
          "type": "DRUG"
        },
        {
          "name": "Ribavirin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "AbbVie (prior sponsor, Abbott)",
      "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": 74,
      "start_date": "2010-03",
      "completion_date": "2012-01",
      "has_results": true,
      "last_update_posted_date": "2015-01-08",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 25,
      "location_summary": "Phoenix, Arizona • Anaheim, California • La Jolla, California + 19 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01074008"
    },
    {
      "nct_id": "NCT01271790",
      "title": "A Study of Response-Guided Duration of Combination Therapy With GS-9451, Pegasys® and Copegus® With and Without Tegobuvir (GS-9190) in Previously Untreated Subjects With Genotype 1 Chronic Hepatitis C",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "Tegobuvir (GS-9190)",
          "type": "DRUG"
        },
        {
          "name": "GS-9451",
          "type": "DRUG"
        },
        {
          "name": "Pegasys®",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Copegus®",
          "type": "DRUG"
        },
        {
          "name": "Tegobuvir placebo",
          "type": "DRUG"
        },
        {
          "name": "GS-9451 placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "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": 245,
      "start_date": "2010-10",
      "completion_date": "2013-09",
      "has_results": false,
      "last_update_posted_date": "2014-02-06",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 85,
      "location_summary": "Dothan, Alabama • Montgomery, Alabama • Phoenix, Arizona + 62 more",
      "locations": [
        {
          "city": "Dothan",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01271790"
    },
    {
      "nct_id": "NCT01435226",
      "title": "GS-5885, GS-9451, Tegobuvir and Ribovirin in Treatment-Experienced Subjects With Chronic Genotype 1a Or 1b Hepatitis C Virus (HCV) Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "GS-5885",
          "type": "DRUG"
        },
        {
          "name": "GS-9451",
          "type": "DRUG"
        },
        {
          "name": "tegobuvir",
          "type": "DRUG"
        },
        {
          "name": "placebo to match tegobuvir",
          "type": "DRUG"
        },
        {
          "name": "placebo to match RBV",
          "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": 170,
      "start_date": "2011-09",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2013-12-17",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 37,
      "location_summary": "Tucson, Arizona • Anaheim, California • Beverly Hills, California + 30 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Coronado",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01435226"
    },
    {
      "nct_id": "NCT01371578",
      "title": "Oral Antivirals (GS-5885, Tegobuvir, and/or GS-9451) With Peginterferon Alfa 2a and Ribavirin in Treatment Experienced Subjects With Chronic Genotype 1 Hepatitis C Virus Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "GS-5885 tablet",
          "type": "DRUG"
        },
        {
          "name": "GS-9451 tablet",
          "type": "DRUG"
        },
        {
          "name": "peginterferon alfa-2a",
          "type": "BIOLOGICAL"
        },
        {
          "name": "ribavirin tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 163,
      "start_date": "2011-07",
      "completion_date": "2013-03",
      "has_results": false,
      "last_update_posted_date": "2014-02-11",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 54,
      "location_summary": "Dothan, Alabama • Montgomery, Alabama • Beverly Hills, California + 43 more",
      "locations": [
        {
          "city": "Dothan",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01371578"
    },
    {
      "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": "2026-09-05T16:05:59.081Z",
      "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": "NCT00001123",
      "title": "A Collaborative Double-Blind Placebo-Controlled Trial of Intravenous Ribavirin As a Treatment for Presumed Hantavirus Pulmonary Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hantavirus Pulmonary Syndrome"
      ],
      "interventions": [
        {
          "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": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 130,
      "start_date": null,
      "completion_date": "2005-11",
      "has_results": false,
      "last_update_posted_date": "2010-08-27",
      "last_synced_at": "2026-09-05T16:05:59.081Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001123"
    }
  ]
}