cAd3-Marburg Vaccine in Healthy Adults

Marburg Virus Disease Clinical Trial

Official title: RV 507: A Phase I Open-Label, Dose-Escalation Clinical Trial to Evaluate the Safety, Tolerability and Immunogenicity of the Marburg Chimpanzee Adenovirus Vector Vaccine, VRC-MARADC087-00-VP (cAd3-Marburg), in Healthy Adults

Status Completed

Clinical Trial Summary

RV 507 was a Phase I, open-label study to examine the safety, tolerability and immunogenicity of an investigational Marburg vaccine given by intramuscular (IM) injection to healthy adults. The study was a dose escalation of VRC-MARADC087-00-VP, a chimpanzee adenovirus serotype 3 (cAd3) vector vaccine, which encodes wild type (WT) glycoprotein (GP) from Marburgvirus.

Clinical Trial Description

A total of 40 participants were evenly split, with 20 in each of the two dosage groups, to receive the investigational cAd3-Marburg vaccine at a dose of either 1x10^10 particle units (PU) (Group 1) or 1x10^11 PU (Group 2). The dose escalation plan included daily review of any new safety data by a study clinician, regular review of safety data by the protocol team and a staged enrollment plan with required interim safety reviews. The study began with enrollment of 3 participants into Group 1 (1x10^10 PU) at a rate of 1 participant per day. After at least 7 days of follow-up for the first 3 vaccinated participants, an interim safety review occurred before enrollment of additional participants into the group. No safety issues were identified; therefore, an additional 17 participants were enrolled to complete Group 1. When there was a minimum of seven days of follow-up safety data from the last enrolled participant in Group 1, an interim safety review occurred. Once no safety issues were identified, enrollment of participants into the next dose level began with the enrollment of 3 participants at a rate of 1 participant per day. After at least 7 days of follow-up for the first 3 vaccinated participants in Group 2 (1x10^11 PU), an interim safety review occurred before the enrollment of additional participants into Group 2. No safety issues were identified and an additional 17 participants were enrolled to complete Group 2. Participants were followed for approximately 48 weeks. ;

Related Conditions & MeSH terms

• Marburg Virus Disease
• Virus Diseases

• NCT number: NCT03475056
• Study type: Interventional
• Source: National Institute of Allergy and Infectious Diseases (NIAID)
• Status: Completed
• Phase: Phase 1
• Start date: October 9, 2018
• Completion date: December 19, 2019