Partnership for Research on Ebola Vaccines in Liberia (PREVAIL)

Summary

Background: \- Ebola virus disease (EVD) affects many people in Liberia and other countries in West Africa. It is caused by the Ebola virus and makes people sick with fever, headache, vomiting, diarrhea, rash, and bleeding. About half the people with EVD die. There is no approved treatment for it. Researchers are studying two Ebola vaccines. The vaccines do not cause Ebola. Objectives: \- To study the safety and efficacy of two Ebola vaccines. Eligibility: \- Adults 18 and older who live in Liberia and are at risk for Ebola infection but have never had Ebola. Design: * Participants will give information including birthdate, gender, occupation, and location of home. They will give contact information for themselves and 2 alternate contacts. They will give a history of their contact with people with Ebola. Some participants may have a physical. They may have blood taken. * Participants will be injected with either an Ebola vaccine or a placebo with a needle in the upper arm. The placebo is a salt solution. * Participants will have blood taken. * Participants will be watched for 30 minutes. * Participants will return to the clinic 1 week and 1 month after they get the shot. They will have blood taken. * After that, participants will be contacted monthly to discuss how they are feeling. They may be contacted by phone, may visit the clinic, or may have a home visit. * The study ends 8-12 months after participants get the shot. If one of the vaccines works against Ebola and does not have many side effects, participants can get the vaccine if they did not get it in the study.

Timeline

Start

2015-01-20

Primary completion

2016-06-01

Completion

2020-11-01

Publications

• Background Feldmann H, Geisbert TW. Ebola haemorrhagic fever. Lancet. 2011 Mar 5;377(9768):849-62. doi: 10.1016/S0140-6736(10)60667-8.
• Background Chertow DS, Kleine C, Edwards JK, Scaini R, Giuliani R, Sprecher A. Ebola virus disease in West Africa--clinical manifestations and management. N Engl J Med. 2014 Nov 27;371(22):2054-7. doi: 10.1056/NEJMp1413084. Epub 2014 Nov 5. No abstract available.
• Background Colloca S, Barnes E, Folgori A, Ammendola V, Capone S, Cirillo A, Siani L, Naddeo M, Grazioli F, Esposito ML, Ambrosio M, Sparacino A, Bartiromo M, Meola A, Smith K, Kurioka A, O'Hara GA, Ewer KJ, Anagnostou N, Bliss C, Hill AV, Traboni C, Klenerman P, Cortese R, Nicosia A. Vaccine vectors derived from a large collection of simian adenoviruses induce potent cellular immunity across multiple species. Sci Transl Med. 2012 Jan 4;4(115):115ra2. doi: 10.1126/scitranslmed.3002925.
• Simon JK, Kennedy SB, Mahon BE, Dubey SA, Grant-Klein RJ, Liu K, Hartzel J, Coller BG, Welebob C, Hanson ME, Grais RF. Immunogenicity of rVSVDeltaG-ZEBOV-GP Ebola vaccine (ERVEBO(R)) in African clinical trial participants by age, sex, and baseline GP-ELISA titer: A post hoc analysis of three Phase 2/3 trials. Vaccine. 2022 Nov 2;40(46):6599-6606. doi: 10.1016/j.vaccine.2022.09.037. Epub 2022 Oct 5.
• Antonello J, Grant-Klein RJ, Nichols R, Kennedy SB, Dubey S, Simon JK. Serostatus cutoff levels and fold increase to define seroresponse to recombinant vesicular stomatitis virus - Zaire Ebola virus envelope glycoprotein vaccine: An evidence-based analysis. Vaccine. 2020 Jun 26;38(31):4885-4891. doi: 10.1016/j.vaccine.2020.04.061. Epub 2020 Jun 1.
• Logue J, Tuznik K, Follmann D, Grandits G, Marchand J, Reilly C, Sarro YDS, Pettitt J, Stavale EJ, Fallah M, Olinger GG, Bolay FK, Hensley LE. Use of the Filovirus Animal Non-Clinical Group (FANG) Ebola virus immuno-assay requires fewer study participants to power a study than the Alpha Diagnostic International assay. J Virol Methods. 2018 May;255:84-90. doi: 10.1016/j.jviromet.2018.02.018. Epub 2018 Feb 23.
• Kennedy SB, Bolay F, Kieh M, Grandits G, Badio M, Ballou R, Eckes R, Feinberg M, Follmann D, Grund B, Gupta S, Hensley L, Higgs E, Janosko K, Johnson M, Kateh F, Logue J, Marchand J, Monath T, Nason M, Nyenswah T, Roman F, Stavale E, Wolfson J, Neaton JD, Lane HC; PREVAIL I Study Group. Phase 2 Placebo-Controlled Trial of Two Vaccines to Prevent Ebola in Liberia. N Engl J Med. 2017 Oct 12;377(15):1438-1447. doi: 10.1056/NEJMoa1614067.
• Coller BG, Blue J, Das R, Dubey S, Finelli L, Gupta S, Helmond F, Grant-Klein RJ, Liu K, Simon J, Troth S, VanRheenen S, Waterbury J, Wivel A, Wolf J, Heppner DG, Kemp T, Nichols R, Monath TP. Clinical development of a recombinant Ebola vaccine in the midst of an unprecedented epidemic. Vaccine. 2017 Aug 16;35(35 Pt A):4465-4469. doi: 10.1016/j.vaccine.2017.05.097. Epub 2017 Jun 21.

Drugs

Indications