Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT03879603 · ClinicalTrials.gov registry record · Phase 1
VRC 313: A Trivalent Virus-like Particle (VLP) Encephalitis Vaccine (WEVEE) in Healthy Adults
A Phase 1 study, sponsored by National Institute of Allergy and Infectious Diseases (NIAID).
- Completed
- Registry status
- Phase 1
- Development phase
- 30
- Enrollment target
NCT03879603: Completed Phase 1 study, sponsored by National Institute of Allergy and Infectious Diseases (NIAID).
NCT03879603 is a Phase 1 study that has completed, run by National Institute of Allergy and Infectious Diseases (NIAID). The registered enrollment target is 30 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (50% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT03879603, a Phase 1 study, has completed, sponsored by National Institute of Allergy and Infectious Diseases (NIAID).
- COMPLETED
- Registry status
- Phase 1
- Development phase
- 30 participants
- Enrollment target
Study Summary
Western Equine Encephalitis Virus (WEEV), Eastern Equine Encephalitis Virus (EEEV), and Venezuelan Equine Encephalitis Virus (VEEV) are transmitted to humans by infected mosquitoes and can cause encephalitis (swelling of the brain) and other neurological manifestations, including fever, chills, discomfort, feeling sick, muscle pain and then headache, vomiting, restlessness, irritability, seizures, coma, and death. Vaccines teach the body to prevent or fight an infection. When the body learns to fight an infection, this is called an immune response. Researchers developed a vaccine against Western, Eastern and Venezuelan equine encephalitis viruses to help the body make an immune response. There are no live or killed viruses in the vaccine, so you cannot get infected with any of these 3 viruses from getting the vaccine. The experimental trivalent encephalitis vaccine, VRC-WEVVLP073-00-VP, is composed of Western equine encephalitis (WEE), Eastern equine encephalitis (EEE), and Venezuelan equine encephalitis (VEE) virus-like particles (VLP). The purpose of this study is to test three doses (6 mcg, 30 mcg, and 60 mcg) of this experimental vaccine against Western, Eastern and Venezuelan equine encephalitis viruses.
Primary Outcome
Subjects recorded the occurrence of solicited symptoms on a diary card for 7 days after each study product administration and reviewed the diary card with clinic staff at a follow up visit. Subjects were counted once for each symptom at the worst severity if they indicated experiencing the symptom at any severity during the reporting period. The number reported for "Any Local Symptom" is the number of subjects reporting any local symptom at the worst severity. Reactogenicity grading (Mild, Moder
Interventions
- BIOLOGICAL VRC-WEVVLP073-00-VP
- OTHER VRC-GENMIX083-AL-VP
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 30 participants |
| Start Date | 2019-04-02 |
| Est. Completion | 2020-02-26 |
| Phase | Phase 1 |
What the finished NCT03879603 record still lists
NCT03879603 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 30 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (50% lower).
The record links to 0 conditions, and to 2 interventions - of which VRC-WEVVLP073-00-VP is the first listed.
NCT03879603 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT03879603 about?
NCT03879603 is a clinical study titled "VRC 313: A Trivalent Virus-like Particle (VLP) Encephalitis Vaccine (WEVEE) in Healthy Adults". Western Equine Encephalitis Virus (WEEV), Eastern Equine Encephalitis Virus (EEEV), and Venezuelan Equine Encephalitis Virus (VEEV) are transmitted to humans by infected mosquitoes and can cause encephalitis (swelling of the brain) and other neurological manifestations, including fever, chills, disc...
What is the current status of trial NCT03879603?
This trial is currently completed. It is a Phase 1 study. The enrollment target is 30 participants. The study started on 2019-04-02. Estimated completion is 2020-02-26.
What interventions are being tested in trial NCT03879603?
The interventions under investigation include: VRC-WEVVLP073-00-VP (BIOLOGICAL), VRC-GENMIX083-AL-VP (OTHER).
Who is sponsoring clinical trial NCT03879603?
This trial is sponsored by National Institute of Allergy and Infectious Diseases (NIAID), which has 2,006 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT03879603's enrollment target sits among peer trials
30 1332nd of 2000 higher than 561 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT00977977 · 30 participants · Phase 2
Rituximab Plus Cyclosporine in Idiopathic Membranous Nephropathy
- NCT01459107 · 30 participants · Phase 2
Human Upper Extremity Allotransplantation
- NCT01666080 · 30 participants · NA
Second or Greater Allogeneic Hematopoietic Stem Cell Transplant Using Reduced Intensity Conditioning (RIC)
- NCT01720836 · 30 participants · Phase 1
Study of the Immune Response of MUC1 (Mucin1) Peptide Vaccine for Non-small Cell Lung Cancer
Similar registry start date
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia
- NCT07125183 · started 2026-12 · Phase 2
Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma
- NCT07292298 · started 2026-11 · Phase 2
Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates
- NCT04263285 · started 2026-10 · NA
Treatment of Depression Post-SCI