Evidence map›Paper›PMID 22416064›Full record

ArticleNucleic acids research2012

Sequence dependence of isothermal DNA amplification via EXPAR.

Jifeng Qian, Tanya M Ferguson, Deepali N Shinde, Alissa J Ramírez-Borrero, Arend Hintze, Christoph Adami, Angelika Niemz

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

33 citing papers in PubMed, 119 citations in OpenAlex.

  1. Article
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  8. Article
  9. Article
  10. Review
  11. Ultrarapid detection of SARS-CoV-2 RNA using a reverse transcription-free exponential amplification reaction, RTF-EXPAR.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  12. Article
  13. Article
  14. Point of Care Diagnostics in the Age of COVID-19.Diagnostics (Basel, Switzerland) · 2020
    Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. A mathematical model for a biphasic DNA amplification reaction.Journal of the Royal Society, Interface · 2019
    Article
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

7 authors at 2 institutions in 1 country.

Jifeng QianKeck Graduate Institute, Claremont, 535 Watson Drive, Claremont, CA 91711, USA.
Tanya M Ferguson
Deepali N Shinde
Alissa J Ramírez-Borrero
Arend Hintze
Christoph Adami
Angelika Niemz
Michigan State University · USKeck Graduate Institute · US

Funding

Rapid Diagnosis of MDR TB from Sputum using a Small Fully Integrated Nucleic AcidR01AI090831 · NIAID · KECK GRADUATE INST OF APPLIED LIFE SCIS · PI NIEMZ, ANGELIKA · 2010 to 2013
$3.5M
Rapid Isothermal Nucleic Acid Amplification Assay and Device for HSV TestingR01AI076247 · NIAID · KECK GRADUATE INST OF APPLIED LIFE SCIS · PI NIEMZ, ANGELIKA, STERLING, JAMES D · 2008 to 2011
$2.4M
NIAID NIH HHS R01 AI076247NIAID NIH HHS R01AI076247NIAID NIH HHS R01 AI090831
6 · The paper itself

Abstract

Isothermal nucleic acid amplification is becoming increasingly important for molecular diagnostics. Therefore, new computational tools are needed to facilitate assay design. In the isothermal EXPonential Amplification Reaction (EXPAR), template sequences with similar thermodynamic characteristics perform very differently. To understand what causes this variability, we characterized the performance of 384 template sequences, and used this data to develop two computational methods to predict EXPAR template performance based on sequence: a position weight matrix approach with support vector machine classifier, and RELIEF attribute evaluation with Naïve Bayes classification. The methods identified well and poorly performing EXPAR templates with 67-70% sensitivity and 77-80% specificity. We combined these methods into a computational tool that can accelerate new assay design by ruling out likely poor performers. Furthermore, our data suggest that variability in template performance is linked to specific sequence motifs. Cytidine, a pyrimidine base, is over-represented in certain positions of well-performing templates. Guanosine and adenosine, both purine bases, are over-represented in similar regions of poorly performing templates, frequently as GA or AG dimers. Since polymerases have a higher affinity for purine oligonucleotides, polymerase binding to GA-rich regions of a single-stranded DNA template may promote non-specific amplification in EXPAR and other nucleic acid amplification reactions.

Indexed as

Nucleic Acid Amplification TechniquesArtificial IntelligenceBase SequenceBayes TheoremComputational BiologyDNAPosition-Specific Scoring MatricesSoftwareTemplates, GeneticThermodynamicsDNA

Identifiers

PMID22416064
PMCPMC3367216
OpenAlexW2161758332

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.