{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=GS-4774",
    "query": {
      "intervention": "GS-4774"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T04:00:21.401Z",
  "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": "NCT02174276",
      "title": "Safety and Efficacy of GS-4774 in Combination With Tenofovir Disoproxil Fumarate (TDF) for the Treatment of Participants With Chronic Hepatitis B (CHB) and Who Are Currently Not on Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Tenofovir disoproxil fumarate",
          "type": "DRUG"
        },
        {
          "name": "GS-4774",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "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": 195,
      "start_date": "2014-07-24",
      "completion_date": "2018-05-30",
      "has_results": true,
      "last_update_posted_date": "2019-06-04",
      "last_synced_at": "2026-09-04T04:00:21.401Z",
      "location_count": 12,
      "location_summary": "Palo Alto, California • Sacramento, California • San Diego, California + 9 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Jose",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02174276"
    },
    {
      "nct_id": "NCT01779505",
      "title": "A Phase 1a Trial Assessing the Safety, Tolerability, and Immunogenicity of GS-4774 (GI-13020) at Various Dose Levels and Regimens in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "GS-4774",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2013-01",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2014-01-08",
      "last_synced_at": "2026-09-04T04:00:21.401Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01779505"
    },
    {
      "nct_id": "NCT02258581",
      "title": "Long Term Follow-up Registry of Individuals Treated in A Gilead-Sponsored Trial in Individuals With Chronic Hepatitis B Infection",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Hepatitis B"
      ],
      "interventions": [
        {
          "name": "GS-4774",
          "type": "DRUG"
        },
        {
          "name": "GS-9620",
          "type": "DRUG"
        },
        {
          "name": "Tenofovir disoproxil fumarate (TDF)",
          "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": 241,
      "start_date": "2014-12-09",
      "completion_date": "2017-08-14",
      "has_results": false,
      "last_update_posted_date": "2017-10-03",
      "last_synced_at": "2026-09-04T04:00:21.401Z",
      "location_count": 16,
      "location_summary": "Sacramento, California • San Diego, California • San Francisco, California + 13 more",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Jose",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02258581"
    },
    {
      "nct_id": "NCT01943799",
      "title": "Safety and Efficacy of GS-4774 for the Treatment of Chronic Hepatitis B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic HBV Infection"
      ],
      "interventions": [
        {
          "name": "GS-4774",
          "type": "BIOLOGICAL"
        },
        {
          "name": "OAV Regimen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Gilead Sciences",
      "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": 178,
      "start_date": "2013-09-13",
      "completion_date": "2015-03-03",
      "has_results": true,
      "last_update_posted_date": "2019-11-01",
      "last_synced_at": "2026-09-04T04:00:21.401Z",
      "location_count": 16,
      "location_summary": "Los Angeles, California • Pasadena, California • Sacramento, California + 13 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01943799"
    }
  ]
}