At a glance
ClinicalIndex Comparison RecordStandardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.
VRC 321: A Phase I Open-Label Clinical Trial to Evaluate Dose, Safety, Tolerability, and Immunogenicity of an Influenza H1 Stabilized Stem Ferritin Vaccine, VRCFLUNPF099-00-VP, in Healthy Adults
In Brief
A Phase 1 clinical trial evaluating VRC-FLUNPF099-00-VP (H1ssF_3928) for Influenza Infection. Completed, enrolled 52 participants across 1 site.
Detailed Summary
Background: The flu is a common viral infection that can be deadly for certain people. Vaccines against flu have been developed to teach the body to prevent or fight the infection. A new vaccine may help the body to make an immune response to H1 flu, a flu strain that infects humans. Objective: To test the safety and effectiveness of the H1 Stabilized Stem Ferritin vaccine (VRC-FLUNPF099-00-VP). Eligibility: Healthy people ages 18-70 years old who got at least 1 licensed flu vaccine since January 1, 2014. Design: Participants received 1 or 2 vaccinations by injections (shots) in the upper arm muscle over 4 months. Participants received a thermometer and recorded their temperature and symptoms every day a diary card for 7 days after each injection. The injection site was checked for redness, swelling, or bruising. Participants had 9-11 follow-up visits over 12-15 months. At follow-up visits, participants had blood drawn and were checked for health changes or problems. Participants who reported influenza-like illness had nose and throat swabs for evaluation of viral infection. Some participants had apheresis. A needle was placed into a vein in both arms. Blood was removed through a needle in the vein of one arm. A machine removed the white blood cells and then the rest of the blood was returned to the participant through a needle in the other arm. A separate consent was provided to participants for genetic testing on their samples.
Study Details
Timeline
Interventions
The vaccine is composed of the HA stem domain from Influenza A/New Caledonia/20/1999 (H1N1) genetically fused to the ferritin protein from H. pylori. Purified H1ssF\_3928 particles display eight well-formed HA trimers that antigenically resemble the native H1 stem viral spikes.