Enhanced neutralization escape to therapeutic monoclonal antibodies by SARS-CoV-2 omicron sub-lineages.

Authors :: Touret F
Giraud E
Bourret J
Donati F
Tran-Rajau J
Chiaravalli J
Lemoine F
Agou F
Simon-Lorière E
van der Werf S
de Lamballerie X
Source :: IScience [iScience] 2023 Apr 21; Vol. 26 (4), pp. 106413. Date of Electronic Publication: 2023 Mar 15.
Publication Year :: 2023
Abstract: The landscape of SARS-CoV-2 variants dramatically diversified with the simultaneous appearance of multiple subvariants originating from BA.2, BA.4, and BA.5 Omicron sub-lineages. They harbor a specific set of mutations in the spike that can make them more evasive to therapeutic monoclonal antibodies. In this study, we compared the neutralizing potential of monoclonal antibodies against the Omicron BA.2.75.2, BQ.1, BQ.1.1, and XBB variants, with a pre-Omicron Delta variant as a reference. Sotrovimab retains some activity against BA.2.75.2, BQ.1, and XBB as it did against BA.2/BA.5, but is less active against BQ.1.1. Within the Evusheld/AZD7442 cocktail, Cilgavimab lost all activity against all subvariants studied, resulting in loss of Evusheld activity. Finally, Bebtelovimab, while still active against BA.2.75, also lost all neutralizing activity against BQ.1, BQ.1.1, and XBB variants.<br />Competing Interests: The authors declare that there is no conflict of interest.<br /> (© 2023 The Author(s).)

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