Evidence map›Paper›PMID 26854117›Full record

ArticleMolecular and cellular probes2016

Factors influencing Recombinase polymerase amplification (RPA) assay outcomes at point of care.

Lorraine Lillis, Joshua Siverson, Arthur Lee, Jason Cantera, Mathew Parker, Olaf Piepenburg, Dara A Lehman, David S Boyle

Abstract read
In one paragraph

Article in Molecular and cellular probes, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers.

0numbers the graph read from it
0cells of the map it votes in
85citing 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

85 citing papers in PubMed.

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  11. Mpox disease, diagnosis, and point of care platforms.Bioengineering & translational medicine · 2025
    Review
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  13. Article
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  16. Review
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25 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

8 authors.

Lorraine LillisPATH, 2201 Westlake Ave Suite 200, Seattle, WA 98121, USA. Electronic address: llillis@path.org.
Joshua SiversonPATH, 2201 Westlake Ave Suite 200, Seattle, WA 98121, USA. Electronic address: jsiverson@path.org.
Arthur LeePATH, 2201 Westlake Ave Suite 200, Seattle, WA 98121, USA. Electronic address: alee@path.org.
Jason CanteraPATH, 2201 Westlake Ave Suite 200, Seattle, WA 98121, USA. Electronic address: jcantera@path.org.
Mathew ParkerTwistDx Limited, Minerva Building, Babraham Research Campus, Babraham, Cambridge CB22, UK. Electronic address: M.Parker@TwistDx.co.uk.
Olaf PiepenburgTwistDx Limited, Minerva Building, Babraham Research Campus, Babraham, Cambridge CB22, UK. Electronic address: O.Piepenburg@Twistdx.co.uk.
Dara A LehmanFred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, WA 98109, USA. Electronic address: dlehman@fhcrc.org.
David S BoylePATH, 2201 Westlake Ave Suite 200, Seattle, WA 98121, USA. Electronic address: dboyle@path.org.

Funding

Recombinase Polymerase Amplification for Point-of-Care Diagnosis of Infant HIV-1R01AI097038 · NIAID · PATH · PI BOYLE, DAVID SCOTT · 2011 to 2013
$1.2M
NIAID NIH HHS R01 AI097038NIAID NIH HHS R01AI097038
6 · The paper itself

Abstract

Recombinase Polymerase Amplification (RPA) can be used to detect pathogen-specific DNA or RNA in under 20 min without the need for complex instrumentation. These properties enable its potential use in resource limited settings. However, there are concerns that deviations from the manufacturer's protocol and/or storage conditions could influence its performance in low resource settings. RPA amplification relies upon viscous crowding agents for optimal nucleic acid amplification, and thus an interval mixing step after 3-6 min of incubation is recommended to distribute amplicons and improve performance. In this study we used a HIV-1 RPA assay to evaluate the effects of this mixing step on assay performance. A lack of mixing led to a longer time to amplification and inferior detection signal, compromising the sensitivity of the assay. However lowering the assay volume from 50 μL to 5 μL showed similar sensitivity with or without mixing. We present the first peer-reviewed study that assesses long term stability of RPA reagents without a cold chain. Reagents stored at -20 °C, and 25 °C for up to 12 weeks were able to detect 10 HIV-1 DNA copies. Reagents stored at 45 °C for up to 3 weeks were able to detect 10 HIV-1 DNA copies, with reduced sensitivity only after >3 weeks at 45 °C. Together our results show that reducing reaction volumes bypassed the need for the mixing step and that RPA reagents were stable even when stored for 3 weeks at very high temperatures.

Indexed as

HIV-1HumansNucleic Acid Amplification TechniquesPoint-of-Care SystemsRecombinant ProteinsRecombinasesRNA, ViralSensitivity and SpecificityRecombinant ProteinsRecombinasesRNA, ViralCold chainLow resource settingsReagent stabilityRecombinase polymerase amplificationSensitivity

Identifiers

PMID26854117
PMCPMC4818709

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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.