SARS-CoV-2 B.1.617 Mutations L452R and E484Q Are Not Synergistic for Antibody Evasion
Open Access
- 9 September 2021
- journal article
- research article
- Published by Oxford University Press (OUP) in The Journal of Infectious Diseases
- Vol. 224 (6), 989-994
- https://doi.org/10.1093/infdis/jiab368
Abstract
The SARS-CoV-2 B.1.617 variant emerged in the Indian state of Maharashtra in late 2020. There have been fears that 2 key mutations seen in the receptor-binding domain, L452R and E484Q, would have additive effects on evasion of neutralizing antibodies. We report that spike bearing L452R and E484Q confers modestly reduced sensitivity to BNT162b2 mRNA vaccine-elicited antibodies following either first or second dose. The effect is similar in magnitude to the loss of sensitivity conferred by L452R or E484Q alone. These data demonstrate reduced sensitivity to vaccine-elicited neutralizing antibodies by L452R and E484Q but lack of synergistic loss of sensitivity.Keywords
Funding Information
- Wellcome Trust (WT108082AIA)
- AMED (20fk0108413)
- COVID-19 Genomics UK
- Medical Research Council UK Research and Innovation
- National Institute of Health Research
- Genome Research Ltd
- Cambridge NIHRB
- Biomedical Research Centre
- Bill and Melinda Gates Foundation (OPP1175094)
- Rosetrees Trust
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