The rise and fall of a local sars‐cov‐2 variant with the spike protein mutation l452r

Israel National Consortium for SARS‐CoV‐2 Sequencing

Research output: Contribution to journalArticlepeer-review

Abstract

Emerging SARS‐CoV‐2 variants may threaten global vaccination efforts and the awaited reduction in outbreak burden. In this study, we report a novel variant carrying the L452R mutation that emerged from a local B.1.362 lineage, B.1.362+L452R. The L452R mutation is associated with the Delta and Epsilon variants and was shown to cause increased infection and reduction in neutralization in pseudoviruses. Indeed, the B.1.362+L452R variant demonstrated a X4‐fold reduction in neutralization capacity of sera from BNT162b2‐vaccinated individuals compared to a wild‐type strain. The variant infected 270 individuals in Israel between December 2020 and March 2021, until diminishing due to the gain in dominance of the Alpha variant in February 2021. This study demonstrates an independent, local emergence of a variant carrying a critical mutation, L452R, which may have the potential of becoming a variant of concern and emphasizes the importance of routine surveillance and detection of novel variants among efforts undertaken to prevent further disease spread.

Original languageEnglish
Article number937
JournalVaccines
Volume9
Issue number8
DOIs
StatePublished - Aug 2021

Funding

FundersFunder number
Department of Laboratories
Public Health Services
Ministry of Health, State of Israel

    Keywords

    • Mutation
    • Neutralization
    • SARS‐CoV‐2
    • Sequencing
    • Variant

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