{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Trimer+4571",
    "query": {
      "intervention": "Trimer 4571"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 8,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T12:46:39.705Z",
  "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": "NCT03878121",
      "title": "Safety and Immunogenicity of Ad4-HIV Envelope Vaccine Vectors in Healthy Volunteers",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteer"
      ],
      "interventions": [
        {
          "name": "Ad4-Env145NFL",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ad4-Env150KN",
          "type": "BIOLOGICAL"
        },
        {
          "name": "VRC-HIVRGP096-00-VP (Trimer 4571) with alum",
          "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": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 300,
      "start_date": "2019-04-17",
      "completion_date": "2028-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-21",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03878121"
    },
    {
      "nct_id": "NCT05828095",
      "title": "A Clinical Trial to Evaluate the Safety and Immunogenicity of Synthetic DNAs Encoding a Native-like HIV Env Trimer and Interleukin-12 (INO-6160), Alone or in a Prime-boost Regimen With 3M-052-AF + Alum Adjuvanted VRC HIV Env Trimer 4571 in Adult Participants Without HIV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV-1-infection"
      ],
      "interventions": [
        {
          "name": "INO-6160, 2 mg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer-4571 / 100 mcg 3M-052-AF (5 mcg) + Alum (500 mcg)",
          "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": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 20,
      "start_date": "2023-04-05",
      "completion_date": "2025-01-23",
      "has_results": true,
      "last_update_posted_date": "2025-09-02",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 3,
      "location_summary": "New York, New York • Philadelphia, Pennsylvania • Nashville, Tennessee",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05828095"
    },
    {
      "nct_id": "NCT04177355",
      "title": "Evaluating the Safety and Immunogenicity of HIV-1 BG505 SOSIP.664 gp140 With TLR Agonist and/or Alum Adjuvants in Healthy, HIV-uninfected Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "BG505 SOSIP.664 gp140",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "3M-052-AF",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CpG 1018",
          "type": "BIOLOGICAL"
        },
        {
          "name": "GLA-LSQ",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Alum (Aluminum Hydroxide Suspension)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 4571",
          "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": 127,
      "start_date": "2020-01-13",
      "completion_date": "2024-11-04",
      "has_results": true,
      "last_update_posted_date": "2025-09-02",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 10,
      "location_summary": "Birmingham, Alabama • Atlanta, Georgia • Decatur, Georgia + 6 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04177355"
    },
    {
      "nct_id": "NCT06332339",
      "title": "Clinical Trial to Evaluate the Safety, Tolerability, and Immunogenicity of 16055 NFL Delta Gly4 Env Protein Trimer and Trimer 4571 Combined With 3M-052-AF + Alum Adjuvant and Ad4-Env145NFL Viral Particles as Heterologous Prime-boost Regimens in Adult Participants Without HIV.",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "16055 NFL delta Gly4 trimer",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 4571",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ad4-Env145NFL, 5 x 108 viral particles (vp)",
          "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": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 45,
      "start_date": "2024-03-15",
      "completion_date": "2026-11-11",
      "has_results": false,
      "last_update_posted_date": "2024-11-05",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 6,
      "location_summary": "Birmingham, Alabama • Decatur, Georgia • Boston, Massachusetts + 3 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06332339"
    },
    {
      "nct_id": "NCT05470400",
      "title": "A Clinical Trial to Evaluate Safety, Tolerability, and Immunogenicity of Adjuvanted HIV-1 Fusion Peptide Conjugate Vaccine Alone or in Prime-Boost Regimens With Adjuvanted HIV-1 Envelope Trimer 4571 and HIV-1 Trimer 6931 Vaccines in Healthy Adults",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "FP conjugate vaccine (25 mcg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "FP conjugate vaccine (200 mcg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 6931 (100 mcg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 6931 (200 mcg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 4571 (200 mcg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 4571 (100 mcg)",
          "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": 44,
      "start_date": "2022-08-15",
      "completion_date": "2024-01-24",
      "has_results": true,
      "last_update_posted_date": "2026-04-23",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 6,
      "location_summary": "Atlanta, Georgia • Boston, Massachusetts • New York, New York + 2 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05470400"
    },
    {
      "nct_id": "NCT04985760",
      "title": "Evaluation of Trimer 4571 Therapeutic Vaccination in Adults Living With HIV on Suppressive Antiretroviral Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Trimer 4571 vaccine 100mcg with 500mcg alum adjuvant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo control for Trimer 4571 vaccine 100mcg with 500mcg alum adjuvant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 4571 vaccine 500mcg with 500mcg alum adjuvant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo control for Trimer 4571 vaccine 500mcg with 500mcg alum adjuvant",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Madhu Chhanda Choudhary",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2021-09-30",
      "completion_date": "2026-01-16",
      "has_results": false,
      "last_update_posted_date": "2026-01-22",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 2,
      "location_summary": "Columbus, Ohio • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04985760"
    },
    {
      "nct_id": "NCT03783130",
      "title": "Dose, Safety, Tolerability, and Immunogenicity of an HIV-1 Vaccine, VRC-HIVRGP096-00-VP, With Alum in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Human Immunodeficiency Virus Prevention",
        "Human Immunodeficiency Virus (HIV)"
      ],
      "interventions": [
        {
          "name": "VRC-HIVRGP096-00-VP",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Alum Adjuvant",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "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": 16,
      "start_date": "2019-03-07",
      "completion_date": "2020-06-24",
      "has_results": true,
      "last_update_posted_date": "2021-08-12",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03783130"
    },
    {
      "nct_id": "NCT05781542",
      "title": "Clinical Trial to Evaluate the Safety and Immunogenicity of Synthetic DNAs Encoding NP-GT8 and IL-12, With or Without a TLR-agonist-Adjuvanted HIV Env Trimer 4571 Boost, in Adults Without HIV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "sD-NP-GT8 DNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "IL-12 DNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trimer 4571",
          "type": "BIOLOGICAL"
        },
        {
          "name": "3M-052-AF",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Alum",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "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": "2023-04-10",
      "completion_date": "2025-04-14",
      "has_results": true,
      "last_update_posted_date": "2025-11-14",
      "last_synced_at": "2026-09-03T12:46:39.705Z",
      "location_count": 4,
      "location_summary": "Birmingham, Alabama • San Francisco, California • Boston, Massachusetts",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05781542"
    }
  ]
}