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A Human Monoclonal Antibody Combination Rescues Nonhuman Primates from Advanced Disease Caused by the Major Lineages of Lassa Virus

Abstract

There are no approved treatments for Lassa fever (LF), which is responsible for thousands of deaths each year in West Africa. A major challenge in developing effective medical countermeasures against LF is the high diversity of circulating Lassa virus (LASV) strains with four recognized lineages and four proposed lineages. The recent resurgence of LASV in Nigeria caused by genetically distinct strains underscores this concern. Two LASV lineages (II and III) are dominant in Nigeria. Here, we show that combinations of two or three pan-lineage neutralizing human monoclonal antibodies (8.9F, 12.1F, 37.D) known as Arevirumab-2 or Arevirumab-3 can protect up to 100% of cynomolgus macaques against challenge with both lineage II and III LASV isolates when treatment is initiated at advanced stages of disease on day 8 after LASV exposure. This work demonstrates that it may be possible to develop postexposure interventions that can broadly protect against most strains of LASV.

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References
1.
Chika-Igwenyi N, Harrison R, Psarra C, Gil-Cuesta J, Gulamhusein M, Onwe E . Early onset of neurological features differentiates two outbreaks of Lassa fever in Ebonyi state, Nigeria during 2017-2018. PLoS Negl Trop Dis. 2021; 15(3):e0009169. PMC: 7984835. DOI: 10.1371/journal.pntd.0009169. View

2.
Thielebein A, Ighodalo Y, Taju A, Olokor T, Omiunu R, Esumeh R . Virus persistence after recovery from acute Lassa fever in Nigeria: a 2-year interim analysis of a prospective longitudinal cohort study. Lancet Microbe. 2022; 3(1):e32-e40. DOI: 10.1016/S2666-5247(21)00178-6. View

3.
Keeffe J, Van Rompay K, Olsen P, Wang Q, Gazumyan A, Azzopardi S . A Combination of Two Human Monoclonal Antibodies Prevents Zika Virus Escape Mutations in Non-human Primates. Cell Rep. 2018; 25(6):1385-1394.e7. PMC: 6268006. DOI: 10.1016/j.celrep.2018.10.031. View

4.
Yadouleton A, Picard C, Rieger T, Loko F, Cadar D, Kouthon E . Lassa fever in Benin: description of the 2014 and 2016 epidemics and genetic characterization of a new Lassa virus. Emerg Microbes Infect. 2020; 9(1):1761-1770. PMC: 7473144. DOI: 10.1080/22221751.2020.1796528. View

5.
Frame J . Clinical features of Lassa fever in Liberia. Rev Infect Dis. 1989; 11 Suppl 4:S783-9. DOI: 10.1093/clinids/11.supplement_4.s783. View