Evidence map›Paper›PMID 22406642›Full record

ArticleNature genetics2012

Whole-genome analysis of diverse Chlamydia trachomatis strains identifies phylogenetic relationships masked by current clinical typing.

Simon R Harris, Ian N Clarke, Helena M B Seth-Smith, Anthony W Solomon, Lesley T Cutcliffe, Peter Marsh, Rachel J Skilton, Martin J Holland, David Mabey, Rosanna W Peeling and 14 more

Open access · bronzeAbstract read
In one paragraph

Article in Nature genetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 175 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
175citing papers in PubMed, 1 pooled it
26.9field-weighted citation impact, top 1% 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

175 citing papers in PubMed, 1 synthesis or guideline pooled it, 312 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
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  12. Biodegradation of sodium selenite by a highly tolerant strainCurrent research in microbial sciences · 2025
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  14. Genetic Homogeneity ofPathogens (Basel, Switzerland) · 2024
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  15. Review
  16. Article
  17. Microorganisms · 2024
    Article
  18. Article
  19. Article
  20. Review

115 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

24 authors at 14 institutions in 7 countries.

Simon R HarrisPathogen Genomics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, UK. sh16@sanger.ac.uk
Ian N Clarke
Helena M B Seth-Smith
Anthony W Solomon
Lesley T Cutcliffe
Peter Marsh
Rachel J Skilton
Martin J Holland
David Mabey
Rosanna W Peeling
David A Lewis
Brian G Spratt
Magnus Unemo
Kenneth Persson
Carina Bjartling
Robert Brunham
Henry J C de Vries
Servaas A Morré
Arjen Speksnijder
Cécile M Bébéar
Maïté Clerc
Bertille de Barbeyrac
Julian Parkhill
Nicholas R Thomson
Southampton General Hospital · GBWellcome Sanger Institute · GBLondon School of Hygiene & Tropical Medicine · GBLund University · SEUniversité de Bordeaux · FRUniversity of London · GBBC Centre for Disease Control · CADepartment of Health · TWGGD Amsterdam · NLInstitut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement · FRÖrebro University Hospital · SEService de Santé des Armées · FRSt Mary's Hospital · GBUniversity of Amsterdam · NL

Funding

Department of Health 937Wellcome Trust 080348Wellcome Trust 089472Wellcome Trust 098051
6 · The paper itself

Abstract

Chlamydia trachomatis is responsible for both trachoma and sexually transmitted infections, causing substantial morbidity and economic cost globally. Despite this, our knowledge of its population and evolutionary genetics is limited. Here we present a detailed phylogeny based on whole-genome sequencing of representative strains of C. trachomatis from both trachoma and lymphogranuloma venereum (LGV) biovars from temporally and geographically diverse sources. Our analysis shows that predicting phylogenetic structure using ompA, which is traditionally used to classify Chlamydia, is misleading because extensive recombination in this region masks any true relationships present. We show that in many instances, ompA is a chimera that can be exchanged in part or as a whole both within and between biovars. We also provide evidence for exchange of, and recombination within, the cryptic plasmid, which is another key diagnostic target. We used our phylogenetic framework to show how genetic exchange has manifested itself in ocular, urogenital and LGV C. trachomatis strains, including the epidemic LGV serotype L2b.

Indexed as

Gene Transfer, HorizontalGenome, BacterialRecombination, GeneticBacterial Outer Membrane ProteinsBase SequenceChlamydia InfectionsChlamydia trachomatisDNA, BacterialHumansLymphogranuloma VenereumMolecular Sequence DataPhylogenyPlasmidsPolymorphism, Single NucleotideRNA, Ribosomal, 16SSequence Analysis, DNABacterial Outer Membrane ProteinsDNA, BacterialOMPA outer membrane proteinsRNA, Ribosomal, 16S

Identifiers

PMID22406642
PMCPMC3378690
OpenAlexW2120419610

What OpenQuestion holds

Textmetadata
LicenceTDM
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.