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Partnership for Research on Ebola VACcination (PREVAC): protocol of a randomized, double-blind, placebo-controlled phase 2 clinical trial evaluating three vaccine strategies against Ebola in healthy volunteers in four West African countries

Moses Badio, Edouard Lhomme, Mark Kieh, Abdoul Habib Beavogui, Stephen B. Kennedy, Seydou Doumbia, Bailah Leigh, Samba O. Sow, Alpha Diallo, Daniela Fusco, Matthew Kirchoff, Monique Termote, Renaud Vatrinet, Deborah Wentworth, Helène Esperou, H. Clifford Lane, Jerome Pierson, Deborah Watson-Jones, Céline Roy, Eric D’Ortenzio, Brian Greenwood, Genevieve Chêne, Laura Richert, James D. Neaton, Yazdan Yazdanpanah, the PREVAC study team

Trials, Vol 22, Iss 1, Pp 1-15 (2021)

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Bibliographic Details
Title Partnership for Research on Ebola VACcination (PREVAC): protocol of a randomized, double-blind, placebo-controlled phase 2 clinical trial evaluating three vaccine strategies against Ebola in healthy volunteers in four West African countries
Authors Moses Badio, Edouard Lhomme, Mark Kieh, Abdoul Habib Beavogui, Stephen B. Kennedy, Seydou Doumbia, Bailah Leigh, Samba O. Sow, Alpha Diallo, Daniela Fusco, Matthew Kirchoff, Monique Termote, Renaud Vatrinet, Deborah Wentworth, Helène Esperou, H. Clifford Lane, Jerome Pierson, Deborah Watson-Jones, Céline Roy, Eric D’Ortenzio, Brian Greenwood, Genevieve Chêne, Laura Richert, James D. Neaton, Yazdan Yazdanpanah, the PREVAC study team
Publication Year
2021
Source
Trials, Vol 22, Iss 1, Pp 1-15 (2021)
Description
Abstract Introduction The Ebola virus disease (EVD) outbreak in 2014–2016 in West Africa was the largest on record and provided an opportunity for large clinical trials and accelerated efforts to develop an effective and safe preventative vaccine. Multiple questions regarding the safety, immunogenicity, and efficacy of EVD vaccines remain unanswered. To address these gaps in the evidence base, the Partnership for Research on Ebola Vaccines (PREVAC) trial was designed. This paper describes the design, methods, and baseline results of the PREVAC trial and discusses challenges that led to different protocol amendments. Methods This is a randomized, double-blind, placebo-controlled phase 2 clinical trial of three vaccine strategies against the Ebola virus in healthy volunteers 1 year of age and above. The three vaccine strategies being studied are the rVSVΔG-ZEBOV-GP vaccine, with and without a booster dose at 56 days, and the Ad26.ZEBOV,MVA-FN-Filo vaccine regimen with Ad26.ZEBOV given as the first dose and the MVA-FN-Filo vaccination given 56 days later. There have been 4 versions of the protocol with those enrolled in Version 4.0 comprising the primary analysis cohort. The primary endpoint is based on the antibody titer against the Ebola virus surface glycoprotein measured 12 months following the final injection. Results From April 2017 to December 2018, a total of 5002 volunteers were screened and 4789 enrolled. Participants were enrolled at 6 sites in four countries (Guinea, Liberia, Sierra Leone, and Mali). Of the 4789 participants, 2560 (53%) were adults and 2229 (47%) were children. Those
Document Type
article
Language
English
Publisher Information
BMC, 2021.
Subject Terms
Ebola, Vaccine, Clinical trials, Protocol, Randomized controlled trials, Medicine (General), R5-920
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