{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+B+vaccine&page=2",
    "query": {
      "intervention": "hepatitis B vaccine",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 320,
    "total_pages": 32,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+B+vaccine&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+B+vaccine&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T21:06:50.569Z",
  "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": "NCT01590654",
      "title": "A Study Evaluating GS-9620 in Virologically Suppressed Subjects With Chronic Hepatitis B Virus Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Single Ascending Dose (SAD) Cohorts GS-9620",
          "type": "DRUG"
        },
        {
          "name": "Multiple Ascending Dose (MAD) Cohorts GS-9620",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "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": 51,
      "start_date": "2012-04",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2013-12-20",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 9,
      "location_summary": "Phoenix, Arizona • Indianapolis, Indiana • New Orleans, Louisiana + 6 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01590654"
    },
    {
      "nct_id": "NCT03511794",
      "title": "Effectiveness of the Hepatitis B Vaccine Post-Hematopoietic Stem Cell Transplant",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hepatitis B"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "4 Years to 75 Years"
      },
      "enrollment_count": 52,
      "start_date": "2018-04-13",
      "completion_date": "2022-02-02",
      "has_results": false,
      "last_update_posted_date": "2022-02-07",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03511794"
    },
    {
      "nct_id": "NCT00001119",
      "title": "Effects on the Immune System of Anti-HIV Drugs in Patients Recently Infected With HIV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Tetanus Toxoid Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Indinavir sulfate",
          "type": "DRUG"
        },
        {
          "name": "Lamivudine/Zidovudine",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Abacavir sulfate",
          "type": "DRUG"
        },
        {
          "name": "Amprenavir",
          "type": "DRUG"
        },
        {
          "name": "Efavirenz",
          "type": "DRUG"
        },
        {
          "name": "Hepatitis B Vaccine (Recombinant)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Lamivudine",
          "type": "DRUG"
        },
        {
          "name": "Zidovudine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 288,
      "start_date": "1999-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2011-03-02",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 11,
      "location_summary": "San Francisco, California • Chicago, Illinois • Boston, Massachusetts + 6 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001119"
    },
    {
      "nct_id": "NCT01808352",
      "title": "HPTN 073 Black Men Who Have Sex With Men (MSM) Pre-Exposure Prophylaxis (PrEP)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "HIV Prevention Trials Network",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 226,
      "start_date": "2013-08-15",
      "completion_date": "2015-09-30",
      "has_results": false,
      "last_update_posted_date": "2025-05-07",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California • Washington D.C., District of Columbia • Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01808352"
    },
    {
      "nct_id": "NCT00033163",
      "title": "A Comparison of Adefovir and Tenofovir for the Treatment of Lamivudine-Resistant Hepatitis B Virus in People With HIV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HIV Infections",
        "Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Adefovir dipivoxil",
          "type": "DRUG"
        },
        {
          "name": "Tenofovir disoproxil fumarate",
          "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": 90,
      "start_date": null,
      "completion_date": "2005-05",
      "has_results": false,
      "last_update_posted_date": "2021-11-01",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 15,
      "location_summary": "Sacramento, California • San Francisco, California • Aurora, Colorado + 7 more",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00033163"
    },
    {
      "nct_id": "NCT03664648",
      "title": "DV2-HBV-27: Observational Pregnancy Registry",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnant"
      ],
      "interventions": [
        {
          "name": "HEPLISAV-B",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Dynavax Technologies Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 300,
      "start_date": "2021-02-21",
      "completion_date": "2024-12",
      "has_results": false,
      "last_update_posted_date": "2023-09-18",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 1,
      "location_summary": "Wilmington, North Carolina",
      "locations": [
        {
          "city": "Wilmington",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03664648"
    },
    {
      "nct_id": "NCT04326660",
      "title": "SCOPE-Chinese Women Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer, Breast",
        "Obesity, Abdominal"
      ],
      "interventions": [
        {
          "name": "SCOPE-Chinese Women",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2020-07-20",
      "completion_date": "2021-12-30",
      "has_results": false,
      "last_update_posted_date": "2022-12-22",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04326660"
    },
    {
      "nct_id": "NCT07024641",
      "title": "A Study to Assess the Safety, Tolerability, and Pharmacokinetics of GIGA-2339 in Participants With Chronic Hepatitis B Virus Infection",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hepatitis B Virus Infection"
      ],
      "interventions": [
        {
          "name": "GIGA-2339",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GigaGen, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2024-11-13",
      "completion_date": "2028-11",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 12,
      "location_summary": "Chandler, Arizona • Huntington Beach, California • Lake Forest, California + 9 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Huntington Beach",
          "state": "California"
        },
        {
          "city": "Lake Forest",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07024641"
    },
    {
      "nct_id": "NCT01831037",
      "title": "The Regression of Liver Fibrosis and Risk for Hepatocellular Carcinoma (ROLFH) Study",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Hepatitis C",
        "Chronic Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Regression of fibrosis",
          "type": "OTHER"
        },
        {
          "name": "Specific risk factors related to hepatocellular carcinoma",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Arkansas",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 0,
      "start_date": "2015-07",
      "completion_date": "2019-12",
      "has_results": false,
      "last_update_posted_date": "2015-01-28",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 2,
      "location_summary": "Little Rock, Arkansas • Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01831037"
    },
    {
      "nct_id": "NCT02845401",
      "title": "The Hepatitis B e-Antigen Negative Disease - Directly Offered Study of Treatment Withdrawal in Patients With e-Antigen Negative Chronic HBV Infection (BeNEG-DO).",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Hepatitis B Virus"
      ],
      "interventions": [
        {
          "name": "Stop NA therapy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "California Pacific Medical Center Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "67 Years",
        "sex": "ALL",
        "summary": "18 Years to 67 Years"
      },
      "enrollment_count": 121,
      "start_date": "2016-11-17",
      "completion_date": "2026-05-31",
      "has_results": false,
      "last_update_posted_date": "2023-07-07",
      "last_synced_at": "2026-10-09T21:06:50.569Z",
      "location_count": 2,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02845401"
    }
  ]
}