Evidence map›Paper›PMID 25484920›Full record

ArticleGenome medicine2014

A phylogeny-based sampling strategy and power calculator informs genome-wide associations study design for microbial pathogens.

Maha R Farhat, B Jesse Shapiro, Samuel K Sheppard, Caroline Colijn, Megan Murray

Open access · goldAbstract read
In one paragraph

Article in Genome medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  3. Article
  4. Article
  5. Mutations in theMicrobial genomics · 2021
    Article
  6. Review
  7. Article
  8. Article
  9. Article
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  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Transmissible Mycobacterium tuberculosis Strains Share Genetic Markers and Immune Phenotypes.American journal of respiratory and critical care medicine · 2017
    Article
  18. Review
  19. Article
  20. Microbial Speciation.Cold Spring Harbor perspectives in biology · 2015
    Review
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

5 authors at 5 institutions in 3 countries.

Maha R FarhatDepartment of Pulmonary and Critical Care, Massachusetts General Hospital, Harvard Medical School, Boston, MA USA ; Department of Global Health and Social Medicine, Harvard Medical School, 641 Huntington Avenue Suite 4A, Boston, MA 02115 USA.
B Jesse ShapiroDépartement de sciences biologiques, Université de Montréal, Montréal, QC Canada.
Samuel K SheppardInstitute of Life Science, College of Medicine, Swansea University, Swansea, SA2 8PP UK.
Caroline ColijnDepartment of Mathematics, Imperial College London, London, UK.
Megan MurrayDepartment of Global Health and Social Medicine, Harvard Medical School, 641 Huntington Avenue Suite 4A, Boston, MA 02115 USA ; Department of Epidemiology, Harvard School of Public Health, Boston, MA USA.
Harvard Global Health Institute · USImperial College London · GBMassachusetts General Hospital · USSwansea University · GBUniversité de Montréal · CA

Funding

Sequencing CoreU19AI109755 · NIAID · HARVARD MEDICAL SCHOOL · PI CHANDLER, DARRELL P, CULHANE, AEDIN C · 2014 to 2018
$29.1M
Medical Research Council MR/L015080/1NIAID NIH HHS U19 AI109755
6 · The paper itself

Abstract

Whole genome sequencing is increasingly used to study phenotypic variation among infectious pathogens and to evaluate their relative transmissibility, virulence, and immunogenicity. To date, relatively little has been published on how and how many pathogen strains should be selected for studies associating phenotype and genotype. There are specific challenges when identifying genetic associations in bacteria which often comprise highly structured populations. Here we consider general methodological questions related to sampling and analysis focusing on clonal to moderately recombining pathogens. We propose that a matched sampling scheme constitutes an efficient study design, and provide a power calculator based on phylogenetic convergence. We demonstrate this approach by applying it to genomic datasets for two microbial pathogens: Mycobacterium tuberculosis and Campylobacter species.

Identifiers

PMID25484920
PMCPMC4256898
OpenAlexW2165366478

What OpenQuestion holds

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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.