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Pango lineage designation and assignment using SARS-CoV-2 spike gene nucleotide sequences
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Pango lineage designation and assignment using SARS-CoV-2 spike gene nucleotide sequences
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Pango lineage designation and assignment using SARS-CoV-2 spike gene nucleotide sequences
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Journal Article
Pango lineage designation and assignment using SARS-CoV-2 spike gene nucleotide sequences
2022
Overview
Background
More than 2 million SARS-CoV-2 genome sequences have been generated and shared since the start of the COVID-19 pandemic and constitute a vital information source that informs outbreak control, disease surveillance, and public health policy. The Pango dynamic nomenclature is a popular system for classifying and naming genetically-distinct lineages of SARS-CoV-2, including variants of concern, and is based on the analysis of complete or near-complete virus genomes. However, for several reasons, nucleotide sequences may be generated that cover only the spike gene of SARS-CoV-2. It is therefore important to understand how much information about Pango lineage status is contained in spike-only nucleotide sequences. Here we explore how Pango lineages might be reliably designated and assigned to spike-only nucleotide sequences. We survey the genetic diversity of such sequences, and investigate the information they contain about Pango lineage status.
Results
Although many lineages, including the main variants of concern, can be identified clearly using spike-only sequences, some spike-only sequences are shared among tens or hundreds of Pango lineages. To facilitate the classification of SARS-CoV-2 lineages using subgenomic sequences we introduce the notion of designating such sequences to a “lineage set”, which represents the range of Pango lineages that are consistent with the observed mutations in a given spike sequence.
Conclusions
We find that many lineages, including the main variants-of-concern, can be reliably identified by spike alone and we define lineage-sets to represent the lineage precision that can be achieved using spike-only nucleotide sequences. These data provide a foundation for the development of software tools that can assign newly-generated spike nucleotide sequences to Pango lineage sets.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
Subject
/ Biology
/ Biomedical and Life Sciences
/ Control
/ COVID-19
/ Datasets
/ Genomes
/ Genomics
/ Humans
/ Identification and classification
/ Lineage
/ Methods
/ Microbial Genetics and Genomics
/ Mutation
/ Pango
/ Proteins
/ Severe acute respiratory syndrome coronavirus 2
/ Software
/ Spike
/ Spike Glycoprotein, Coronavirus - genetics
/ Taxonomy
