Evidence map›Paper›PMID 32868442›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Rapid isothermal amplification and portable detection system for SARS-CoV-2.

Anurup Ganguli, Ariana Mostafa, Jacob Berger, Mehmet Y Aydin, Fu Sun, Sarah A Stewart de Ramirez, Enrique Valera, Brian T Cunningham, William P King, Rashid Bashir

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 214 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
214citing papers in PubMed, 3 pooled it
8.4field-weighted citation impact, top 2% 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

214 citing papers in PubMed, 3 syntheses or guidelines pooled it, 408 citations in OpenAlex.

  1. Pooled it
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  4. Article
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  9. Making Molecular Diagnostics Faster.International journal of laboratory hematology · 2026
    Review
  10. Review
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  12. Standardization and performance of SARS-CoV-2 RT-LAMP detection: a reliable, inexpensive, and alternative diagnostic assay.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  13. Article
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  17. Amplification-free, OR-gated CRISPR-Cascade reaction for pathogen detection in blood samples.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
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154 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Anurup GanguliDepartment of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.ORCID 0000-0002-6424-0084
Ariana MostafaDepartment of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.
Jacob BergerDepartment of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.
Mehmet Y AydinDepartment of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.ORCID 0000-0003-4546-1540
Fu SunNick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801.ORCID 0000-0001-7171-8210
Sarah A Stewart de RamirezEmergency Medicine, University of Illinois College of Medicine at Peoria & OSF Healthcare, Peoria, IL 61637.
Enrique ValeraDepartment of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.ORCID 0000-0003-1359-6619
Brian T CunninghamDepartment of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.
William P KingNick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801.ORCID 0000-0001-8606-1290
Rashid BashirDepartment of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801; rbashir@illinois.edu.
University of Illinois Urbana-Champaign · USIllinois College · US

Funding

Smartphone-linked system for diagnosis and epidemiological reporting of pathogens at the point of careR01AI139401 · NIAID · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI BASHIR, RASHID, CUNNINGHAM, BRIAN T. · 2019 to 2022
$1.7M
Multiplexed Pathogen Detection from Whole Blood for Rapid Detection of SepsisR21AI146865 · NIAID · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI BASHIR, RASHID · 2019 to 2020
$424k
NIAID NIH HHS R01 AI139401NIAID NIH HHS R21 AI146865NIH HHS R21 AI146865A
6 · The paper itself

Abstract

The COVID-19 pandemic provides an urgent example where a gap exists between availability of state-of-the-art diagnostics and current needs. As assay protocols and primer sequences become widely known, many laboratories perform diagnostic tests using methods such as RT-PCR or reverse transcription loop mediated isothermal amplification (RT-LAMP). Here, we report an RT-LAMP isothermal assay for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus and demonstrate the assay on clinical samples using a simple and accessible point-of-care (POC) instrument. We characterized the assay by dipping swabs into synthetic nasal fluid spiked with the virus, moving the swab to viral transport medium (VTM), and sampling a volume of the VTM to perform the RT-LAMP assay without an RNA extraction kit. The assay has a limit of detection (LOD) of 50 RNA copies per μL in the VTM solution within 30 min. We further demonstrate our assay by detecting SARS-CoV-2 viruses from 20 clinical samples. Finally, we demonstrate a portable and real-time POC device to detect SARS-CoV-2 from VTM samples using an additively manufactured three-dimensional cartridge and a smartphone-based reader. The POC system was tested using 10 clinical samples, and was able to detect SARS-CoV-2 from these clinical samples by distinguishing positive samples from negative samples after 30 min. The POC tests are in complete agreement with RT-PCR controls. This work demonstrates an alternative pathway for SARS-CoV-2 diagnostics that does not require conventional laboratory infrastructure, in settings where diagnosis is required at the point of sample collection.

Indexed as

BetacoronavirusCoronavirus InfectionsCOVID-19HumansLimit of DetectionMolecular Diagnostic TechniquesNasal MucosaPandemicsPneumonia, ViralPoint-of-Care TestingReproducibility of ResultsReverse Transcriptase Polymerase Chain ReactionSARS-CoV-2SmartphoneCOVID-19 diagnosticspoint-of-careRT-LAMPSARS-CoV-2smartphone reader

Identifiers

PMID32868442
PMCPMC7502724
OpenAlexW3081542135

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.