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CompletedNCT00125970Updated Oct 15, 2021

HVTN Protocol 204 - A Phase II Clinical Trial to Evaluate the Safety and Immunogenicity of a Multiclade HIV-1 DNA Plasmid Vaccine, VRC-HIVDNA016-00-VP, Followed by a Multiclade Recombinant Adenoviral Vector HIV-1 Vaccine Boost, VRCHIVADV014-00-VP, in HIV-1 Uninfected Adult Participants

A Phase 2 interventional study of VRC-HIVDNA016-00-VP and VRC-HIVADV014-00-VP in HIV Infections, sponsored by National Institute of Allergy and Infectious Diseases (NIAID). Completed at 12 sites in 5 countries. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-10-15.

Sponsored by National Institute of Allergy and Infectious Diseases (NIAID) · Phase 2, Interventional, and Prevention

Phase
Phase 2
Study type
Interventional
Enrollment
480
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
All
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Study summary

The purpose of the study is to determine the safety of and immune response to a DNA HIV vaccine followed by an adenoviral vector HIV vaccine in HIV uninfected adults.

Read the detailed description

The worldwide HIV/AIDS epidemic may only be controlled through development of a safe and effective vaccine that will prevent HIV infection. DNA vaccines are inexpensive to construct, readily produced in large quantities, and stable for long periods of time. This study will evaluate the safety and immunogenicity of an experimental multiclade HIV vaccine, VRC-HIVDNA016-00-VP, followed by a similarly structured adenovirus-vectored vaccine boost, VRC-HIVADV014-00-VP, in HIV uninfected adults. The DNA plasmids in both the vaccines code for proteins from HIV subtypes A, B, and C, which together represent 90% of new HIV infections in the world. Participants in this study will be recruited in North America, South America, and Africa.

Each volunteer will participate in the study for 36 months. Participants will be randomly assigned to one of two groups. Group 1 participants will receive the DNA HIV vaccine at study entry and at Months 1 and 2. At Month 6, Group 1 participants will receive an injection of the adenoviral vector HIV vaccine. Group 2 participants will receive placebo at study entry and Months 1, 2, and 6. There will be 17 study visits, which will occur at study entry and every 2 weeks thereafter until Day 70; at Month 6 and every 2 weeks thereafter until Day 210; and Months 9.5, 12, 18, 24, 30, and 36. A physical exam, adverse events reporting, HIV and pregnancy prevention counseling, and medication history will occur at each visit. Blood and urine collection will occur at selected visits.

02

Conditions studied

  • HIV Infections

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Keywords

  • HIV Seronegativity
  • HIV Preventive Vaccine
03

In context

HIV Infections

4,734 studies on the registry are indexed under HIV Infections; 244 are open to participants now.

This study's enrollment of 480 is above the median of 80 across 3,489 interventional studies indexed under HIV Infections.

Browse HIV Infections studies →

Lead sponsor

National Institute of Allergy and Infectious Diseases (NIAID) is the lead sponsor of 2,446 studies on the registry; 179 are open to participants now.

Of its 405 completed or terminated interventional studies of FDA-regulated products, 302 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • uninfected
  • Has access to a participating HIV Vaccine Trials Unit (HVTU) and willing to be followed for the duration of the study
  • Willing to receive HIV test results
  • Good general health
  • Willing to use acceptable forms of
  • Completed at least 12 years of schooling (South African participants only)

Exclusion criteria

Exclusion Criteria:

  • vaccines in prior HIV vaccine trial
  • medications within 168 days prior to first study vaccine administration
  • Blood products within 120 days prior to first study vaccine administration
  • Immunoglobulin within 60 days prior to first study vaccine administration
  • within 30 days prior to first study vaccine administration
  • research agents within 30 days prior to first study vaccine administration
  • Subunit or killed vaccines within 14 days prior to first study vaccine administration
  • Current tuberculosis prophylaxis or therapy
  • medical condition, abnormal physical exam findings, abnormal laboratory results, or past medical history that may affect current health
  • Any medical, psychiatric, or social condition that would interfere with the study. More information about this criterion can be found in the protocol.
  • Any job-related responsibility that would interfere with the study
  • Serious adverse reaction to vaccines. A person who had an adverse reaction to pertussis vaccine as a child is not excluded.
  • disease or immunodeficiency
  • Active syphilis infection
  • Unstable asthma
  • Diabetes mellitus type 1 or 2
  • Thyroid disease requiring treatment
  • Serious angioedema within the past 3 years
  • Uncontrolled hypertension
  • Bleeding disorder
  • Cancer. If a participant has had surgery to remove the cancer and, in the opinion of the investigator, the cancer is not likely to recur during the study period, the participant is not excluded.
  • Seizure disorder
  • Asplenia
  • Mental illness that would interfere with compliance with the protocol
  • Other conditions that, in the judgment of the investigator, would interfere with the study
  • Pregnant or breastfeeding
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

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Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Care provider)
Enrollment
480 participants (actual)

Study arms

  • Experimental
    1

    DNA HIV vaccine administered at study entry and at Months 1 and 2 and adenoviral vector HIV vaccine administered at Month 6

    Biological: VRC-HIVDNA016-00-VP · Biological: VRC-HIVADV014-00-VP

  • Placebo comparator
    2

    DNA HIV vaccine placebo administered at study entry and at Months 1 and 2 and adenoviral vector HIV vaccine placebo administered at Month 6

    Biological: VRC-HIVDNA016-00-VP placebo · Biological: VRC-HIVADV014-00-VP placebo

Interventions

  • BiologicalVRC-HIVDNA016-00-VP

    4 mg administered in deltoid

    Also known as: Multiclade HIV-1 DNA Plasmid Vaccine

  • BiologicalVRC-HIVADV014-00-VP

    1 x 10\^10 PU administered in deltoid

    Also known as: rAD

  • BiologicalVRC-HIVDNA016-00-VP placebo

    1 mL administered at study entry and Months 1 and 2

    Also known as: DNA HIV placebo vaccine, Phosphate buffered saline

  • BiologicalVRC-HIVADV014-00-VP placebo

    1 mL administered at Month 6

    Also known as: rAD placebo, VRC-DILUENT013-DIL-VP

06

What researchers measure

Primary outcomes

  1. Local and systemic adverse reactions

    Time frame: Measured after each injection and for 12 months after the first injection

  2. Unfractionated IFN-γ ELISpot responses to HIV-1 peptide pools as performed by the VRC laboratory

    Time frame: Measured at Day 196

  3. Unfractionated IFN-γ ELISpot responses to HIV-1 peptide pools as performed by the FHCRC laboratory

    Time frame: Measured at Day 210

  4. CD4 and CD8 T cell responses to HIV-1 peptide pools as measured by flow cytometry-based intracellular cytokine staining (ICS) assay as performed by the VRC laboratory

    Time frame: Measured at Day 196

  5. CD4 and CD8 T cell responses to HIV-1 peptide pools as measured by flow cytometry-based ICS assay as performed by the FHCRC laboratory

    Time frame: Measured at Day 210

Secondary outcomes

  1. Humoral immune response to HIV-1 as measured by neutralizing antibody and binding assays

    Time frame: Measured through Month 36

  2. Unfractionated IFN-γ ELISpot responses to HIV-1 as performed by the FHCRC or the VRC laboratories

    Time frame: Measured at Days 70, 210, and 364

  3. CD4 and CD8 T cell responses to HIV-1 as measured by flow cytometry-based ICS assay as performed by the FHCRC or the VRC laboratories

    Time frame: Measured at Days 70, 210, and 364

  4. Vaccine-induced HIV-specific T cell responses to individual peptide pools as measured by IFN-γ ELISpot and ICS as performed by the FHCRC or the VRC laboratories

    Time frame: Measured through Month 36

  5. Cross-clade cellular immune responses to HIV-1 Gag-Pol-Nef peptides from clades A and C as assessed by IFN-γ ELISpot and ICS assays as performed by the FHCRC or the VRC laboratories

    Time frame: Measured through Month 36

07

Study locations

12 sites
  • Alabama Vaccine CRS
    Birmingham, Alabama 35294-2041, United States
  • Project Brave HIV Vaccine CRS
    Baltimore, Maryland 21201, United States
  • Brigham and Women's Hosp. CRS
    Boston, Massachusetts 02115, United States
  • Miriam Hospital's HVTU
    Providence, Rhode Island 02115, United States
  • Vanderbilt Vaccine CRS
    Nashville, Tennessee 37232, United States
  • Projeto Praca Onze/Hesfa Crs
    Rio de Janeiro, Brazil
  • Sao Paulo HVTU - CRT DST/AIDS CRS
    San Paulo, Brazil
  • Les Centres GHESKIO CRS
    Port-au-Prince, Haiti
  • Epidemiology Research & Training Unit Jamaica MOH CRS
    Kingston, Jamaica
  • Soweto HVTN CRS
    Johannesburg, Gauteng, South Africa
  • Emavundleni Desmond Tutu HIV Centre CRS
    Cape Town, South Africa
  • CAPRISA Aurum CRS
    Klerksdorp, South Africa
08

References and documents

Publications

  • Esparza J, Osmanov S. HIV vaccines: a global perspective. Curr Mol Med. 2003 May;3(3):183-93. doi: 10.2174/1566524033479825. PubMed 12699356 ↗
  • Gaschen B, Taylor J, Yusim K, Foley B, Gao F, Lang D, Novitsky V, Haynes B, Hahn BH, Bhattacharya T, Korber B. Diversity considerations in HIV-1 vaccine selection. Science. 2002 Jun 28;296(5577):2354-60. doi: 10.1126/science.1070441. PubMed 12089434 ↗
  • Moore JP, Parren PW, Burton DR. Genetic subtypes, humoral immunity, and human immunodeficiency virus type 1 vaccine development. J Virol. 2001 Jul;75(13):5721-9. doi: 10.1128/JVI.75.13.5721-5729.2001. No abstract available. PubMed 11390574 ↗
  • Stratov I, DeRose R, Purcell DF, Kent SJ. Vaccines and vaccine strategies against HIV. Curr Drug Targets. 2004 Jan;5(1):71-88. doi: 10.2174/1389450043490686. PubMed 14738219 ↗
  • Fischinger S, Cizmeci D, Deng D, Grant SP, Frahm N, McElrath J, Fuchs J, Bart PA, Pantaleo G, Keefer M, O Hahn W, Rouphael N, Churchyard G, Moodie Z, Donastorg Y, Streeck H, Alter G. Sequence and vector shapes vaccine induced antibody effector functions in HIV vaccine trials. PLoS Pathog. 2021 Nov 29;17(11):e1010016. doi: 10.1371/journal.ppat.1010016. eCollection 2021 Nov. PubMed 34843602 ↗
  • Jin X, Morgan C, Yu X, DeRosa S, Tomaras GD, Montefiori DC, Kublin J, Corey L, Keefer MC; NIAID HIV Vaccine Trials Network. Multiple factors affect immunogenicity of DNA plasmid HIV vaccines in human clinical trials. Vaccine. 2015 May 11;33(20):2347-53. doi: 10.1016/j.vaccine.2015.03.036. Epub 2015 Mar 25. PubMed 25820067 ↗
  • Churchyard GJ, Morgan C, Adams E, Hural J, Graham BS, Moodie Z, Grove D, Gray G, Bekker LG, McElrath MJ, Tomaras GD, Goepfert P, Kalams S, Baden LR, Lally M, Dolin R, Blattner W, Kalichman A, Figueroa JP, Pape J, Schechter M, Defawe O, De Rosa SC, Montefiori DC, Nabel GJ, Corey L, Keefer MC; NIAID HIV Vaccine Trials Network. A phase IIA randomized clinical trial of a multiclade HIV-1 DNA prime followed by a multiclade rAd5 HIV-1 vaccine boost in healthy adults (HVTN204). PLoS One. 2011;6(8):e21225. doi: 10.1371/journal.pone.0021225. Epub 2011 Aug 3. PubMed 21857901 ↗
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Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Sep 2005, a primary completion of Feb 2008 and a completion of Jan 2010. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 30, 2005
First posted
Aug 2, 2005
Start
Sep 2005
Primary completionActual
Feb 2008
CompletionActual
Jan 2010
Results delay requested
Jan 30, 2010
Last update
Oct 15, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 15, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00125970
Responsible party
Sponsor
First posted
Aug 2, 2005
Start date
Sep 2005
Primary completion
Feb 2008
Completion
Jan 2010
Last update
Oct 15, 2021

Study contacts

Michael Keefer, MD
study chair · University of Rochester
Gavin Churchyard, MBBCh, FCP, MMed, PhD
study chair · Aurum Health Research Limited
View the source record on ClinicalTrials.gov ↗

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