Evidence map›Paper›PMID 34651569›Full record

ArticleEmerging microbes & infections2021

Spike protein evolution in the SARS-CoV-2 Delta variant of concern: a case series from Northern Lombardy.

Andreina Baj, Federica Novazzi, Francesca Drago Ferrante, Angelo Genoni, Elena Tettamanzi, Giuseppe Catanoso, Daniela Dalla Gasperina, Francesco Dentali, Daniele Focosi, Fabrizio Maggi

Abstract read
In one paragraph

Article in Emerging microbes & infections, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Andreina BajLaboratory of Microbiology, ASST Sette Laghi, Varese, Italy.ORCID 0000-0003-0088-2712
Federica NovazziLaboratory of Microbiology, ASST Sette Laghi, Varese, Italy.
Francesca Drago FerranteLaboratory of Microbiology, ASST Sette Laghi, Varese, Italy.
Angelo GenoniDepartment of Medicine and Surgery, University of Insubria, Varese, Italy.
Elena TettamanziATS Insubria, Varese, Italy.
Giuseppe CatanosoATS Insubria, Varese, Italy.
Daniela Dalla GasperinaLaboratory of Microbiology, ASST Sette Laghi, Varese, Italy.
Francesco DentaliLaboratory of Microbiology, ASST Sette Laghi, Varese, Italy.
Daniele FocosiNorth-Western Tuscany Blood Bank, Pisa University Hospital, Pisa, Italy.ORCID 0000-0001-8811-195X
Fabrizio MaggiLaboratory of Microbiology, ASST Sette Laghi, Varese, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The SARS-CoV-2 variant of concern (VOC) "Delta" is currently defined by PANGOLIN as a cluster of 33 different AY sublineages. Delta (in particular B.1.617.2) is largely and rapidly replacing the Alpha VOC as the dominant clade in most countries. To date, variations in the Spike protein of the Delta VOC have largely been limited. We report here the results of a genomic surveillance programme from Northern Italy. We identified several Delta sublineages harbouring mutations previously reported in GISAID at extremely low frequencies and in different combinations. Two patients (one of them vaccinated) tested positive for a Delta sublineage harbouring S71F, T250I, T572I and K854N. More patients tested positive for G769 V plus C1248F, A352S, and R158G and C1248F, respectively. Genomic surveillance of Delta variants should be encouraged to anticipate immune escape and deploy countermeasures.

Indexed as

AdultAgedCOVID-19Evolution, MolecularFemaleHumansItalyMaleMiddle AgedSARS-CoV-2Spike Glycoprotein, CoronavirusYoung AdultSpike Glycoprotein, CoronavirusC1238FDeltaG769VK854NS71FSARS-CoV-2T250IT572I

Identifiers

PMID34651569
PMCPMC8567936

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.