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Study identifier: NCT03878121 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Safety and Immunogenicity of Ad4-HIV Envelope Vaccine Vectors in Healthy Volunteers

Condition: Healthy Volunteer  ·  Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

PhasePhase 1
Planned participants300
Who can joinAll sexes, 18 Years to 65 Years
Healthy volunteersYes

About this study

Background: Researchers want see if three new HIV (human immunodeficiency virus) vaccines are safe. Two vaccines are carried by live adenoviruses, which are natural and typically cause cold symptoms or an eye infection. Researchers want to see if all the vaccines help fight HIV and if the adenoviruses are contagious. Objectives: To test the safety and effects of three new HIV vaccines. Eligibility: Healthy adults 18-49 years old (vaccinees) Their household and intimate contacts 18-65 years old Design: Vaccinees will be screened with: Physical exam Medical history Blood and urine tests Questions about HIV risk Vaccinees will learn how to prevent spreading the viruses and about required contraception during the study. Vaccinees will get consent forms for their household and intimate contacts. All contacts must be age 18-65. All intimate contacts must sign a consent form. Contacts will have 4 visits over 8 months for blood tests and a physical exam. All applicable participants will have a pregnancy test at every visit. Vaccinees will have about 9 visits over 12 months. They will repeat screening tests and get: 1 of the 2 adenovirus vaccines sprayed in the nose at 2 visits The booster vaccine by needle in an arm at 1 visit Nasal swabs taken at some visits Vaccinees will note their temperature and symptoms for at least 1-4 weeks after each vaccine. Vaccinees may choose to have: Leukapheresis. Blood will be removed by needle in a vein in one arm. A machine wil…

This description comes directly from the study's public registry record.

Talk to the study team

Mark Connors, M.D.  ·  (301) 496-8057  ·  mconnors@nih.gov

Always discuss trial participation with your own doctor first.

Locations (1)

National Institutes of Health Clinical CenterBethesda, Maryland, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT03878121