Safety and Immune Response to Preventive HIV Immunization With Adenovirus Serotype 5 or 35 Vector
A Phase 1B Clinical Trial to Evaluate the Safety and Immunogenicity of Recombinant Adenoviral Subtype 35 (rAd35) and Subtype 5 (rAd5) HIV-1 Vaccines When Given as a Heterologous Prime-boost Regimen or as Boosts to a Recombinant DNA Vaccine in Healthy, Ad5-Naïve and Ad5-Exposed, Low Risk, HIV-1 Uninfected Adult Participants
2 other identifiers
interventional
192
1 country
10
Brief Summary
This study will evaluate the safety and preliminary immune response to recombinant adenoviral serotype 35 and 5 HIV-1 vaccines in HIV-uninfected adults.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1 hiv-infections
Started Feb 2009
Longer than P75 for phase_1 hiv-infections
10 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
December 2, 2008
CompletedFirst Posted
Study publicly available on registry
December 3, 2008
CompletedStudy Start
First participant enrolled
February 1, 2009
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 1, 2011
CompletedStudy Completion
Last participant's last visit for all outcomes
April 1, 2015
CompletedOctober 14, 2021
October 1, 2021
2 years
December 2, 2008
October 13, 2021
Conditions
Keywords
Outcome Measures
Primary Outcomes (4)
Local and systemic reactogenicity signs and symptoms, laboratory measures of safety, and adverse and expedited adverse events
Throughout study
Magnitude and frequency of immune responses between HIV-1 clade A env rAD35 and rAd5 vaccines when given as a boost after DNA vaccine
At Week 4 following the fourth vaccination
Magnitude and frequency of immune responses between clade A env rAD35 vaccine primed by Ad35 versus DNA
At Week 4 following the last vaccination
Magnitude and frequency of immune responses of HIV-1 clade A env rAD35 vaccine when given as a boost
At Week 4 following the fourth vaccination
Secondary Outcomes (1)
Immunogenicity of HIV-1 clade A env rAD35 vaccine given as a prime
At Week 4 following the first vaccination
Study Arms (8)
1A
EXPERIMENTALrAD5-naive participants will receive rAd35 intramuscularly at study entry and rAd5 intramuscularly at Month 6
1B
PLACEBO COMPARATORParticipants will receive rAd35 placebo intramuscularly at study entry and rAd5 placebo intramuscularly at Month 6
2A
EXPERIMENTALrAD5-naive participants will receive DNA vaccine intramuscularly at study entry and Months 1 and 2 and rAd5 intramuscularly at Month 6
2B
PLACEBO COMPARATORParticipants will receive DNA vaccine placebo intramuscularly at study entry and Months 1 and 2 and rAd5 placebo intramuscularly at Month 6
3A
EXPERIMENTALParticipants will receive DNA vaccine intramuscularly at study entry and Months 1 and 2 and rAd35 intramuscularly at Month 6
3B
PLACEBO COMPARATORParticipants will receive DNA vaccine placebo intramuscularly at study entry and Months 1 and 2 and rAd35 placebo intramuscularly at Month 6
4A
EXPERIMENTALParticipants will receive DNA vaccine intramuscularly at study entry and Months 1 and 2 and rAd35 intramuscularly at Month 6
4B
PLACEBO COMPARATORParticipants will receive DNA vaccine placebo intramuscularly at study entry and Months 1 and 2 and rAd35 placebo intramuscularly at Month 6
Interventions
Eligibility Criteria
You may qualify if:
- Good general health
- Access to a participating HVTN clinical research site and willingness to be followed for the duration of the study
- Assessment of understanding, including understanding of Step Study results
- Willing to receive HIV test results
- Willing to discuss HIV infection risks, agree to HIV risk reduction counseling, and willing to continue 5 years of annual follow-up contact
- Willing to commit to maintaining behavior consistent with low risk of HIV exposure through the last required protocol visit
- Considered low risk for HIV infection after clinical staff assessment. More information on this criterion can be found in the protocol.
- Certain laboratory values. More information on this criterion can be found in the protocol.
- Negative Hepatitis B surface antigen
- Negative anti-Hepatitis C virus antibodies
- For females, agree to use effective contraception from at least 21 days prior to enrollment through the last protocol visit. More information on this criterion can be found in the protocol.
You may not qualify if:
- HIV-infected
- Active drug or alcohol abuse within 12 months prior to study entry
- History of newly acquired sexually transmitted infections. More information on this criterion can be found in the protocol.
- Experimental vaccines received within 5 years prior to study entry
- Immunosuppressive medications received within 168 days prior to first vaccination
- Blood products received within 120 days prior to first vaccination
- Immunoglobulin received within 60 days prior to first vaccination
- Live attenuated vaccines received within 30 days prior to first vaccination
- Investigational research agents received within 30 days prior to first vaccination
- Intent to participate in another study of an investigational research agent during planned duration of the study
- Any vaccines that not live attenuated vaccines and were received within 14 days prior to first vaccination
- Allergy treatment with antigen injections within 30 days prior to first vaccination or scheduled within 14 days after first vaccination
- Clinically significant medical condition, findings, results, or history with implications for current health. More information on this criterion can be found in the protocol.
- Serious adverse reactions to vaccines
- Autoimmune disease
- +14 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (10)
Alabama CRS
Birmingham, Alabama, 35294, United States
Bridge HIV CRS
San Francisco, California, 94143, United States
The Hope Clinic of the Emory Vaccine Center CRS
Decatur, Georgia, 30030, United States
Brigham and Women's Hospital Vaccine CRS (BWH VCRS)
Boston, Massachusetts, 02115-6110, United States
Fenway Health (FH) CRS
Boston, Massachusetts, 02215-4302, United States
Columbia P&S CRS
New York, New York, 10032-3732, United States
New York Blood Center CRS
New York, New York, 10065, United States
University of Rochester Vaccines to Prevent HIV Infection CRS
Rochester, New York, 14642, United States
Vanderbilt Vaccine (VV) CRS
Nashville, Tennessee, 37232-2582, United States
Seattle Vaccine and Prevention CRS
Seattle, Washington, 98109-1024, United States
Related Publications (4)
Buchbinder SP, Mehrotra DV, Duerr A, Fitzgerald DW, Mogg R, Li D, Gilbert PB, Lama JR, Marmor M, Del Rio C, McElrath MJ, Casimiro DR, Gottesdiener KM, Chodakewitz JA, Corey L, Robertson MN; Step Study Protocol Team. Efficacy assessment of a cell-mediated immunity HIV-1 vaccine (the Step Study): a double-blind, randomised, placebo-controlled, test-of-concept trial. Lancet. 2008 Nov 29;372(9653):1881-1893. doi: 10.1016/S0140-6736(08)61591-3. Epub 2008 Nov 13.
PMID: 19012954BACKGROUNDPriddy FH, Brown D, Kublin J, Monahan K, Wright DP, Lalezari J, Santiago S, Marmor M, Lally M, Novak RM, Brown SJ, Kulkarni P, Dubey SA, Kierstead LS, Casimiro DR, Mogg R, DiNubile MJ, Shiver JW, Leavitt RY, Robertson MN, Mehrotra DV, Quirk E; Merck V520-016 Study Group. Safety and immunogenicity of a replication-incompetent adenovirus type 5 HIV-1 clade B gag/pol/nef vaccine in healthy adults. Clin Infect Dis. 2008 Jun 1;46(11):1769-81. doi: 10.1086/587993.
PMID: 18433307BACKGROUNDSheets RL, Stein J, Bailer RT, Koup RA, Andrews C, Nason M, He B, Koo E, Trotter H, Duffy C, Manetz TS, Gomez P. Biodistribution and toxicological safety of adenovirus type 5 and type 35 vectored vaccines against human immunodeficiency virus-1 (HIV-1), Ebola, or Marburg are similar despite differing adenovirus serotype vector, manufacturer's construct, or gene inserts. J Immunotoxicol. 2008 Jul;5(3):315-35. doi: 10.1080/15376510802312464.
PMID: 18830892BACKGROUNDFischinger 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.
PMID: 34843602DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY CHAIR
Jonathan Fuchs, MD, MPH
SFDPH/UCSF
- STUDY CHAIR
Pierre-Alexandre Bart, MD
CHUV (Lausanne)
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, CARE PROVIDER
- Purpose
- PREVENTION
- Intervention Model
- PARALLEL
- Sponsor Type
- NIH
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
December 2, 2008
First Posted
December 3, 2008
Study Start
February 1, 2009
Primary Completion
February 1, 2011
Study Completion
April 1, 2015
Last Updated
October 14, 2021
Record last verified: 2021-10