Evidence map›Paper›PMID 28356154›Full record

ArticleBMC biology2017

Patterns of cross-contamination in a multispecies population genomic project: detection, quantification, impact, and solutions.

Marion Ballenghien, Nicolas Faivre, Nicolas Galtier

Abstract read
In one paragraph

Article in BMC biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 1 pooled it
–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

52 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Residual DNA impurities in AAV vectors-nature and transcription.Molecular therapy. Methods & clinical development · 2025
    Article
  6. Article
  7. Decontamination of DNA sequences from a Streptomyces genome for optimal genome mining.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  8. Review
  9. Contamination Survey of Insect Genomic and Transcriptomic Data.Animals : an open access journal from MDPI · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
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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

3 authors.

Marion BallenghienUMR5554 - Institute of Evolutionary Sciences, University Montpellier, CNRS, IRD, EPHE, Place Eugène Bataillon, CC64, 34095, Montpellier, France.
Nicolas FaivreUMR5554 - Institute of Evolutionary Sciences, University Montpellier, CNRS, IRD, EPHE, Place Eugène Bataillon, CC64, 34095, Montpellier, France.
Nicolas GaltierUMR5554 - Institute of Evolutionary Sciences, University Montpellier, CNRS, IRD, EPHE, Place Eugène Bataillon, CC64, 34095, Montpellier, France. nicolas.galtier@univ-montp2.fr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundContamination is a well-known but often neglected problem in molecular biology. Here, we investigated the prevalence of cross-contamination among 446 samples from 116 distinct species of animals, which were processed in the same laboratory and subjected to subcontracted transcriptome sequencing.

resultsUsing cytochrome oxidase 1 as a barcode, we identified a minimum of 782 events of between-species contamination, with approximately 80% of our samples being affected. An analysis of laboratory metadata revealed a strong effect of the sequencing center: nearly all the detected events of between-species contamination involved species that were sent the same day to the same company. We introduce new methods to address the amount of within-species, between-individual contamination, and to correct for this problem when calling genotypes from base read counts.

conclusionsWe report evidence for pervasive within-species contamination in this data set, and show that classical population genomic statistics, such as synonymous diversity, the ratio of non-synonymous to synonymous diversity, inbreeding coefficient F

Indexed as

DNA ContaminationGenetics, PopulationGenomicsDatabases, GeneticElectron Transport Complex IVMetagenomicsPolymorphism, Single NucleotideProbabilitySpecies SpecificityElectron Transport Complex IVAnimalsGenotypingRNAseqSNP callingTranscriptomeWithin-species

Identifiers

PMID28356154
PMCPMC5370491

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.