{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=QS21",
    "query": {
      "intervention": "QS21"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 44,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=QS21&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T15:02:50.167Z",
  "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": "NCT04784767",
      "title": "PHASE 1 SARS-COV-2-Spike-Ferritin-Nanoparticle (SpFN) Vaccine With ALFQ Adjuvant for Prevention of COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "SARS-CoV-2 Infection"
      ],
      "interventions": [
        {
          "name": "25 µg SpFN_1B-06-PL + ALFQ (QS21 Adjuvant)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sodium chloride, USP, for injection (0.9% NaCl)",
          "type": "DRUG"
        },
        {
          "name": "50 µg SpFN_1B-06-PL + ALFQ (QS21 Adjuvant)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "U.S. Army Medical Research and Development Command",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 29,
      "start_date": "2021-04-05",
      "completion_date": "2023-10-30",
      "has_results": false,
      "last_update_posted_date": "2025-06-17",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 1,
      "location_summary": "Silver Spring, Maryland",
      "locations": [
        {
          "city": "Silver Spring",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04784767"
    },
    {
      "nct_id": "NCT01248273",
      "title": "Unimolecular Pentavalent (Globo-H-GM2-sTn-TF-Tn) Immunization of Patients With Epithelial Ovarian, Fallopian Tube, or Peritoneal Cancer in First Remission",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Fallopian Tubes",
        "Ovarian Cancer",
        "Peritoneal Cancer"
      ],
      "interventions": [
        {
          "name": "Globo-H-GM2-sTn-TF-Tn-KLH conjugate, plus the immunological adjuvant QS-21",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "19 Years and older · Female only"
      },
      "enrollment_count": 26,
      "start_date": "2010-11",
      "completion_date": "2017-03",
      "has_results": false,
      "last_update_posted_date": "2017-03-14",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01248273"
    },
    {
      "nct_id": "NCT04268420",
      "title": "A Trial For The Study of Falciparum Malaria Protein 013 Administered Via Intramuscular Injection in Healthy Adults",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Vaccine Reaction"
      ],
      "interventions": [
        {
          "name": "FMP013",
          "type": "DRUG"
        },
        {
          "name": "ALFQ",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "U.S. Army Medical Research and Development Command",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 46,
      "start_date": "2020-03-20",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2023-01-10",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 1,
      "location_summary": "Silver Spring, Maryland",
      "locations": [
        {
          "city": "Silver Spring",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04268420"
    },
    {
      "nct_id": "NCT06015724",
      "title": "Anti-CD38 Antibody With KRAS Vaccine and Anti-PD-1 Antibody in Subjects With Pancreatic Ductal Adenocarcinoma and Refractory Non-Small Cell Lung Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pancreatic Ductal Adenocarcinoma",
        "Refractory Non-Small Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "Daratumumab",
          "type": "DRUG"
        },
        {
          "name": "KRAS vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Nivolumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Georgetown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2024-01-31",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2026-06-30",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06015724"
    },
    {
      "nct_id": "NCT00004929",
      "title": "Vaccine Therapy Plus QS21 in Treating Patients With Progressive Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "MUC-2-KLH vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "QS21",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 15,
      "start_date": "1999-09",
      "completion_date": "2008-06",
      "has_results": false,
      "last_update_posted_date": "2013-01-31",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004929"
    },
    {
      "nct_id": "NCT00000853",
      "title": "A Phase I, Multicenter, Randomized, Double-Blind, Placebo-Controlled HIV-1 Vaccine Trial to Evaluate the Safety and Immunogenicity of Low Dose MN rsgp120/HIV-1 (Genentech) in Combination With QS21 Adjuvant or Alum in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "rgp120/HIV-1MN",
          "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": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 37,
      "start_date": null,
      "completion_date": "1999-01",
      "has_results": false,
      "last_update_posted_date": "2021-11-04",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 3,
      "location_summary": "Birmingham, Alabama • Rochester, New York • Seattle, Washington",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00000853"
    },
    {
      "nct_id": "NCT00006041",
      "title": "Vaccine Therapy in Treating Patients With Ovarian, Fallopian Tube, or Peritoneal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Fallopian Tube Cancer",
        "Ovarian Cancer",
        "Primary Peritoneal Cavity Cancer"
      ],
      "interventions": [
        {
          "name": "MUC1-KLH conjugate vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MUC1-KLH vaccine/QS21",
          "type": "BIOLOGICAL"
        },
        {
          "name": "QS21",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": null,
      "start_date": "2000-02",
      "completion_date": "2002-02",
      "has_results": false,
      "last_update_posted_date": "2013-06-19",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00006041"
    },
    {
      "nct_id": "NCT01284387",
      "title": "Amyloid Imaging And Safety Study Of ACC-001 In Subjects With Mild to Moderate Alzheimer's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alzheimer's Disease"
      ],
      "interventions": [
        {
          "name": "ACC-001 (vanutide cridificar)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "JANSSEN Alzheimer Immunotherapy Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "50 Years to 89 Years"
      },
      "enrollment_count": 126,
      "start_date": "2011-01",
      "completion_date": "2014-02",
      "has_results": false,
      "last_update_posted_date": "2015-01-05",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 25,
      "location_summary": "Sun City, Arizona • La Jolla, California • Long Beach, California + 20 more",
      "locations": [
        {
          "city": "Sun City",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01284387"
    },
    {
      "nct_id": "NCT00004052",
      "title": "Vaccine Therapy in Treating Patients With Chronic Myelogenous Leukemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Leukemia"
      ],
      "interventions": [
        {
          "name": "QS21",
          "type": "BIOLOGICAL"
        },
        {
          "name": "bcr-abl peptide vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "1999-03",
      "completion_date": "2005-08",
      "has_results": false,
      "last_update_posted_date": "2013-06-25",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 2,
      "location_summary": "New York, New York • Houston, Texas",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004052"
    },
    {
      "nct_id": "NCT00498602",
      "title": "Study Evaluating ACC-001 In Subjects With Mild To Moderate Alzheimer's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alzheimer Disease"
      ],
      "interventions": [
        {
          "name": "ACC-001 + QS-21",
          "type": "BIOLOGICAL"
        },
        {
          "name": "QS-21",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Diluent: Phosphate Buffered Saline",
          "type": "OTHER"
        },
        {
          "name": "ACC-001",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "50 Years to 85 Years"
      },
      "enrollment_count": 160,
      "start_date": "2007-11",
      "completion_date": "2013-02",
      "has_results": true,
      "last_update_posted_date": "2016-01-01",
      "last_synced_at": "2026-09-03T15:02:50.167Z",
      "location_count": 27,
      "location_summary": "Phoenix, Arizona • Sun City, Arizona • San Francisco, California + 11 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Sun City",
          "state": "Arizona"
        },
        {
          "city": "Sun City",
          "state": "Arizona"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00498602"
    }
  ]
}