Evidence map›Paper›PMID 26778280›Full record

ArticleScientific reports2016

Nested Machine Learning Facilitates Increased Sequence Content for Large-Scale Automated High Resolution Melt Genotyping.

Stephanie I Fraley, Pornpat Athamanolap, Billie J Masek, Justin Hardick, Karen C Carroll, Yu-Hsiang Hsieh, Richard E Rothman, Charlotte A Gaydos, Tza-Huei Wang, Samuel Yang

Abstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–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

20 citing papers in PubMed.

  1. Article
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  14. Emerging Analytical Techniques for Rapid Pathogen Identification and Susceptibility Testing.Annual review of analytical chemistry (Palo Alto, Calif.) · 2019
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
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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

10 authors.

Stephanie I FraleyBioengineering, The University of California San Diego, La Jolla, California, 92093, USA.
Pornpat AthamanolapBiomedical Engineering, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Billie J MasekEmergency Medicine, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Justin HardickEmergency Medicine, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Karen C CarrollMedical Microbiology, Pathology, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Yu-Hsiang HsiehEmergency Medicine, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Richard E RothmanEmergency Medicine, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Charlotte A GaydosInfectious Disease, Medicine, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Tza-Huei WangBiomedical Engineering, The Johns Hopkins University, Baltimore, Maryland, 21218, USA.
Samuel YangEmergency Medicine, Stanford University, Stanford, California, 94305, USA.

Funding

Vaccine strategy for broad spectrum protection agains non-typhoidal salmonellU54AI057168 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI LEVINE, MYRON MAX · 2003 to 2013
$91.5M
TrainingU54EB007958 · NIBIB · JOHNS HOPKINS UNIVERSITY · PI Susan Anne Tuddenham · 2007 to 2026
$34.6M
HIV Prevention Trials Network: Network LaboratoryU01AI068613 · NIAID · JOHNS HOPKINS UNIVERSITY · PI ESHLEMAN, SUSAN H · 2006 to 2010
$16.5M
NIAID NIH HHS U01 AI068613NIAID NIH HHS U54 AI057168NIBIB NIH HHS U54 EB007958
6 · The paper itself

Abstract

High Resolution Melt (HRM) is a versatile and rapid post-PCR DNA analysis technique primarily used to differentiate sequence variants among only a few short amplicons. We recently developed a one-vs-one support vector machine algorithm (OVO SVM) that enables the use of HRM for identifying numerous short amplicon sequences automatically and reliably. Herein, we set out to maximize the discriminating power of HRM + SVM for a single genetic locus by testing longer amplicons harboring significantly more sequence information. Using universal primers that amplify the hypervariable bacterial 16 S rRNA gene as a model system, we found that long amplicons yield more complex HRM curve shapes. We developed a novel nested OVO SVM approach to take advantage of this feature and achieved 100% accuracy in the identification of 37 clinically relevant bacteria in Leave-One-Out-Cross-Validation. A subset of organisms were independently tested. Those from pure culture were identified with high accuracy, while those tested directly from clinical blood bottles displayed more technical variability and reduced accuracy. Our findings demonstrate that long sequences can be accurately and automatically profiled by HRM with a novel nested SVM approach and suggest that clinical sample testing is feasible with further optimization.

Indexed as

Genetic VariationGenotypeAlgorithmsDNADNA PrimersHumansMachine LearningPolymerase Chain ReactionRNA, Ribosomal, 16SDNADNA PrimersRNA, Ribosomal, 16S

Identifiers

PMID26778280
PMCPMC4726007

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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.