Evidence map›Paper›PMID 17175532›Full record

ArticleNucleic acids research2007

Accurate, high-throughput typing of copy number variation using paralogue ratios from dispersed repeats.

John A L Armour, Raquel Palla, Patrick L J M Zeeuwen, Martin den Heijer, Joost Schalkwijk, Edward J Hollox

Abstract readValidation Study
In one paragraph

Article in Nucleic acids research, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
77citing 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

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

  1. Pooled it
  2. Article
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  6. Article
  7. Article
  8. Article
  9. Article
  10. HumanWellcome open research · 2018
    Article
  11. Copy number variation and disease resistance in plants.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2017
    Review
  12. Article
  13. Article
  14. Human β-Defensin 2 in Primary Sclerosing Cholangitis.Clinical and translational gastroenterology · 2017
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Evolution of the rapidly mutating human salivary agglutinin gene (DMBT1) and population subsistence strategy.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article

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

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

6 authors.

John A L ArmourInstitute of Genetics, University of Nottingham, Nottingham, NG7 2UH, UK. john.armour@nottingham.ac.uk
Raquel Palla
Patrick L J M Zeeuwen
Martin den Heijer
Joost Schalkwijk
Edward J Hollox

Funding

Wellcome TrustWellcome Trust 071024
6 · The paper itself

Abstract

Recent work has demonstrated an unexpected prevalence of copy number variation in the human genome, and has highlighted the part this variation may play in predisposition to common phenotypes. Some important genes vary in number over a high range (e.g. DEFB4, which commonly varies between two and seven copies), and have posed formidable technical challenges for accurate copy number typing, so that there are no simple, cheap, high-throughput approaches suitable for large-scale screening. We have developed a simple comparative PCR method based on dispersed repeat sequences, using a single pair of precisely designed primers to amplify products simultaneously from both test and reference loci, which are subsequently distinguished and quantified via internal sequence differences. We have validated the method for the measurement of copy number at DEFB4 by comparison of results from >800 DNA samples with copy number measurements by MAPH/REDVR, MLPA and array-CGH. The new Paralogue Ratio Test (PRT) method can require as little as 10 ng genomic DNA, appears to be comparable in accuracy to the other methods, and for the first time provides a rapid, simple and inexpensive method for copy number analysis, suitable for application to typing thousands of samples in large case-control association studies.

Indexed as

Gene Dosagebeta-DefensinsDNAGenetic VariationHumansPolymerase Chain ReactionRepetitive Sequences, Nucleic Acidbeta-DefensinsDEFB4A protein, humanDNA

Identifiers

PMID17175532
PMCPMC1807953

What OpenQuestion holds

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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.