Evidence map›Paper›PMID 37083576›Full record

ArticleMicrobial genomics2023

Analysis of the ARTIC V4 and V4.1 SARS-CoV-2 primers and their impact on the detection of Omicron BA.1 and BA.2 lineage-defining mutations.

Fatima R Ulhuq, Madhuri Barge, Kerry Falconer, Jonathan Wild, Goncalo Fernandes, Abbie Gallagher, Suzie McGinley, Ahmad Sugadol, Muhammad Tariq, Daniel Maloney and 4 more

Open access · goldAbstract read
In one paragraph

Article in Microbial genomics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.1field-weighted citation impact, top 5% of its field
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

21 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Wastewater Metagenomic Virome Analysis of the 2026 World Cup in Texas.medRxiv : the preprint server for health sciences · 2026
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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

14 authors at 1 institution in 1 country.

Fatima R UlhuqViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Madhuri BargeViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Kerry FalconerViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Jonathan WildViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Goncalo FernandesViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Abbie GallagherViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Suzie McGinleyViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Ahmad SugadolViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Muhammad TariqViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Daniel MaloneyViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Juliet KenicerViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Rebecca DewarViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Kate TempletonViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
Martin P McHughViral Genotyping Reference Laboratory, Royal Infirmary of Edinburgh, NHS Lothian, Edinburgh, EH16 4SA, UK.
NHS Lothian · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ARTIC protocol uses a multiplexed PCR approach with two primer pools tiling the entire SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) genome. Primer pool updates are necessary for accurate amplicon sequencing of evolving SARS-CoV-2 variants with novel mutations. The suitability of the ARTIC V4 and updated V4.1 primer scheme was assessed using whole genome sequencing of Omicron from clinical samples using Oxford Nanopore Technology. Analysis of Omicron BA.1 genomes revealed that 93.22 % of clinical samples generated improved genome coverage at 50× read depth with V4.1 primers when compared to V4 primers. Additionally, the V4.1 primers improved coverage of BA.1 across amplicons 76 and 88, which resulted in the detection of the variant-defining mutations G22898A, A26530G and C26577G. The Omicron BA.2 sub-variant (VUI-22JAN-01) replaced BA.1 as the dominant variant by March 2022, and analysis of 168 clinical samples showed reduced coverage across amplicons 15 and 75. Upon further interrogation of primer binding sites, a mutation at C4321T [present in 163/168 (97 %) of samples] was identified as a possible cause of complete dropout of amplicon 15. Furthermore, two mutations were identified within the primer binding regions for amplicon 75: A22786C (present in 90 % of samples) and C22792T (present in 12.5 % of samples). Together, these mutations may result in reduced coverage of amplicon 75, and further primer updates would allow the identification of the two BA.2-defining mutations present in amplicon 75: A22688G and T22679C. This work highlights the need for ongoing surveillance of primer matches as circulating variants evolve and change.

Indexed as

COVID-19Binding SitesHumansMutationSARS-CoV-2BA.1BA.2NanoporeOmicronSARS-CoV-2whole genome sequencing

Identifiers

PMID37083576
PMCPMC10210939
OpenAlexW4366602619

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.