{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Biological%2FVaccine%3A+Placebo&page=2",
    "query": {
      "intervention": "Biological/Vaccine: Placebo",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 222,
    "total_pages": 23,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Biological%2FVaccine%3A+Placebo&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Biological%2FVaccine%3A+Placebo&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T18:23:22.839Z",
  "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": "NCT02010203",
      "title": "A Phase 1/2 Study of HS-410 in Patients With Non-Muscle Invasive Bladder Cancer After TURBT",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Bladder Cancer"
      ],
      "interventions": [
        {
          "name": "HS-410",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "BCG",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Heat Biologics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 104,
      "start_date": "2013-12",
      "completion_date": "2018-04",
      "has_results": true,
      "last_update_posted_date": "2020-02-17",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 19,
      "location_summary": "Los Angeles, California • Sherman Oaks, California • Torrance, California + 16 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sherman Oaks",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02010203"
    },
    {
      "nct_id": "NCT03491553",
      "title": "Safety, Tolerability and Antiviral Activity of Selgantolimod in Virally-Suppressed Participants With Chronic Hepatitis B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Selgantolimod",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Hepatitis B virus (HBV) OAV Therapy",
          "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": 48,
      "start_date": "2018-04-06",
      "completion_date": "2020-08-10",
      "has_results": true,
      "last_update_posted_date": "2021-08-19",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03491553"
    },
    {
      "nct_id": "NCT05092646",
      "title": "Evaluating Intra-articular Injection of Axolotl Ambient Compared to Saline in Subjects With Ankle Osteoarthritis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Ankle Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Axolotl Ambient",
          "type": "BIOLOGICAL"
        },
        {
          "name": "\"Drug/Placebo: 0.9% Normal Saline\"",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Axolotl Biologix",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 12,
      "start_date": "2021-12-01",
      "completion_date": "2023-11-10",
      "has_results": true,
      "last_update_posted_date": "2026-08-07",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 3,
      "location_summary": "Boise, Idaho • Shreveport, Louisiana • Charlotte, North Carolina",
      "locations": [
        {
          "city": "Boise",
          "state": "Idaho"
        },
        {
          "city": "Shreveport",
          "state": "Louisiana"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05092646"
    },
    {
      "nct_id": "NCT06178991",
      "title": "A Study to Evaluate the Safety, Tolerability, and Immunogenicity of a Combined Modified RNA Vaccine Candidate Against COVID-19 and Influenza.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Influenza",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Influenza and COVID-19 Combination A",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Licensed influenza vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Influenza and COVID-19 Combination B",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Investigational influenza vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "BioNTech SE",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 8795,
      "start_date": "2023-12-20",
      "completion_date": "2024-11-26",
      "has_results": true,
      "last_update_posted_date": "2025-12-04",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 106,
      "location_summary": "Athens, Alabama • Birmingham, Alabama • Mobile, Alabama + 76 more",
      "locations": [
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06178991"
    },
    {
      "nct_id": "NCT01571960",
      "title": "Evaluating the Safety and Immune Response of a Prime-Boost HIV Vaccine Regimen in Healthy, HIV-Uninfected, Vaccinia-Naive Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "GEO-D03 DNA vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MVA/HIV62B (MVA62B) vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo for GEO-D03 DNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo for MVA62B:",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 48,
      "start_date": "2012-04",
      "completion_date": "2016-01",
      "has_results": false,
      "last_update_posted_date": "2021-10-15",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 4,
      "location_summary": "Birmingham, Alabama • San Francisco, California • Boston, Massachusetts + 1 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01571960"
    },
    {
      "nct_id": "NCT03636906",
      "title": "Respiratory Syncytial Virus (RSV) Investigational Vaccine in Infants Aged 6 and 7 Months Likely to be Unexposed to RSV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "RSV (GSK3389245A) lower dose formulation vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV (GSK3389245A) higher dose formulation vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "GSK's multicomponent meningococcal B vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pfizer's meningococcal group A, C, W-135 and Y conjugate vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "GSK's pneumococcal polysaccharide conjugate vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "GSK's meningococcal group A, C, W-135 and Y conjugate vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "7 Months",
        "sex": "ALL",
        "summary": "6 Months to 7 Months"
      },
      "enrollment_count": 201,
      "start_date": "2019-04-08",
      "completion_date": "2021-07-22",
      "has_results": true,
      "last_update_posted_date": "2022-07-27",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 4,
      "location_summary": "Atlanta, Georgia • Nampa, Idaho • Louisville, Kentucky + 1 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Nampa",
          "state": "Idaho"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03636906"
    },
    {
      "nct_id": "NCT01979406",
      "title": "A Phase 1 Ascending Dose Study to Assess the Safety and Immunogenicity of Adenovirus Anthrax Vector Candidate Vaccines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Anthrax Infection"
      ],
      "interventions": [
        {
          "name": "AVA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ad4-PA-1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ad4-PA-GPI-1",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emergent BioSolutions",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 120,
      "start_date": "2013-11",
      "completion_date": "2015-09",
      "has_results": false,
      "last_update_posted_date": "2024-03-18",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 4,
      "location_summary": "Kansas City, Kansas • Silver Spring, Maryland • St Louis, Missouri + 1 more",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Silver Spring",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Mt. Pleasant",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01979406"
    },
    {
      "nct_id": "NCT03426826",
      "title": "The Gut-Brain Study",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Autism Spectrum Disorder (ASD)",
        "Gastro-Intestinal Disorder"
      ],
      "interventions": [
        {
          "name": "FMT versus placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Children's Hospital Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "5 Years to 17 Years"
      },
      "enrollment_count": 10,
      "start_date": "2019-08-15",
      "completion_date": "2026-06",
      "has_results": false,
      "last_update_posted_date": "2023-11-02",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03426826"
    },
    {
      "nct_id": "NCT05074303",
      "title": "Beta-glucan and Immune Response to Influenza Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Healthy Aging"
      ],
      "interventions": [
        {
          "name": "Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Beta-glucan",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "50 Years to 100 Years"
      },
      "enrollment_count": 78,
      "start_date": "2022-07-18",
      "completion_date": "2024-08-28",
      "has_results": true,
      "last_update_posted_date": "2025-11-06",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05074303"
    },
    {
      "nct_id": "NCT04813796",
      "title": "A Study to Evaluate Safety, Reactogenicity, and Immunogenicity of mRNA-1283 and mRNA-1273 Vaccines in Healthy Adults Between 18 Years and 55 Years of Age to Prevent COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1283",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 104,
      "start_date": "2021-03-11",
      "completion_date": "2023-07-25",
      "has_results": false,
      "last_update_posted_date": "2023-08-01",
      "last_synced_at": "2026-10-05T18:23:22.839Z",
      "location_count": 5,
      "location_summary": "Chandler, Arizona • San Diego, California • Melbourne, Florida + 2 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04813796"
    }
  ]
}