Evidence map›Paper›PMID 23618369›Full record

ArticleGenome biology2013

Systematic biases in DNA copy number originate from isolation procedures.

Sebastiaan van Heesch, Michal Mokry, Veronika Boskova, Wade Junker, Rajdeep Mehon, Pim Toonen, Ewart de Bruijn, James D Shull, Timothy J Aitman, Edwin Cuppen and 1 more

Abstract read
In one paragraph

Article in Genome biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

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

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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

11 authors.

Sebastiaan van Heesch
Michal Mokry
Veronika Boskova
Wade Junker
Rajdeep Mehon
Pim Toonen
Ewart de Bruijn
James D Shull
Timothy J Aitman
Edwin Cuppen
Victor Guryev

Funding

GENETIC SUSCEPTIBILITY TO ESTROGEN INDUCED MAMMARY CAR01CA077876 · NCI · UNIVERSITY OF WISCONSIN-MADISON · PI SHULL, JAMES D · 1998 to 2012
$4.4M
Medical Research Council MC_U120061454NCI NIH HHS R01 CA077876NCI NIH HHS R01-CA77876
6 · The paper itself

Abstract

backgroundThe ability to accurately detect DNA copy number variation in both a sensitive and quantitative manner is important in many research areas. However, genome-wide DNA copy number analyses are complicated by variations in detection signal.

resultsWhile GC content has been used to correct for this, here we show that coverage biases are tissue-specific and independent of the detection method as demonstrated by next-generation sequencing and array CGH. Moreover, we show that DNA isolation stringency affects the degree of equimolar coverage and that the observed biases coincide with chromatin characteristics like gene expression, genomic isochores, and replication timing.

conclusionThese results indicate that chromatin organization is a main determinant for differential DNA retrieval. These findings are highly relevant for germline and somatic DNA copy number variation analyses.

Indexed as

ArtifactsDNA Copy Number VariationsAnimalsChemical FractionationDNARatsSensitivity and SpecificitySequence Analysis, DNADNA

Identifiers

PMID23618369
PMCPMC4054094

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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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.