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Schneider FS, Molina L, Picot MC, L'Helgoualch N, Espeut J, Champigneux P, Alali M, Baptiste J, Cardeur L, Carniel C, Davy M, Dedisse D, Dubuc B, Fenech H, Foulongne V, Gaillard CF, Galtier F, Makinson A, Marin G, Santos RM, Morquin D, Ouedraogo A, Lejeune AP, Quenot M, Keiflin P, Robles FC, Rego CR, Salvetat N, Trento C, Vetter D, Molina F, Reynes J. Performances of rapid and connected salivary RT-LAMP diagnostic test for SARS-CoV-2 infection in ambulatory screening. Sci Rep 2022; 12:2843. [PMID: 35181680 PMCID: PMC8857239 DOI: 10.1038/s41598-022-04826-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 12/22/2021] [Indexed: 12/27/2022] Open
Abstract
In the context of social events reopening and economic relaunch, sanitary surveillance of SARS-CoV-2 infection is still required. Here, we evaluated the diagnostic performances of a rapid, extraction-free and connected reverse-transcription loop-mediated isothermal amplification (RT-LAMP) assay on saliva. Nasopharyngeal (NP) swabs and saliva from 443 outpatients were collected simultaneously and tested by reverse-transcription quantitative PCR (RT-qPCR) as reference standard test. Seventy-one individuals (16.0%) were positive by NP and/or salivary RT-qPCR. Sensitivity and specificity of salivary RT-LAMP were 85.9% (95%CI 77.8–94.0%) and 99.5% (98.7–100%), respectively. Performances were similar for symptomatic and asymptomatic participants. Moreover, SARS-CoV-2 genetic variants were analyzed and no dominant mutation in RT-LAMP primer region was observed during the period of the study. We demonstrated that this RT-LAMP test on self-collected saliva is reliable for SARS-CoV-2 detection. This simple connected test with optional automatic results transfer to health authorities is unique and opens the way to secure professional and social events in actual context of economics restart.
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Affiliation(s)
- Francisco Santos Schneider
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Laurence Molina
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Marie-Christine Picot
- Clinical Research and Epidemiology Unit, Department of Medical Information, Montpellier University Hospital, University of Montpellier, Montpellier, France.,INSERM Centre Investigation Clinique 1411, University Hospital, Montpellier, France
| | - Nicolas L'Helgoualch
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Julien Espeut
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Pierre Champigneux
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Mellis Alali
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Julie Baptiste
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Lise Cardeur
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | | | - Martin Davy
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | | | - Benjamin Dubuc
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Hugo Fenech
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Vincent Foulongne
- PCCEI, Univ Montpellier, INSERM, EFS, Univ Antilles, Montpellier, France
| | - Carole Fruchart Gaillard
- CEA, INRAE, Department of Medicines and Healthcare Technologies (DMTS), University of Paris-Saclay, SIMoS, Gif-sur-Yvette, France
| | - Florence Galtier
- INSERM Centre Investigation Clinique 1411, University Hospital, Montpellier, France
| | - Alain Makinson
- Infectious Diseases Department, Montpellier University Hospital, Montpellier, France.,TransVIHMI, IRD, INSERM, University of Montpellier, Montpellier, France
| | - Grégory Marin
- Clinical Research and Epidemiology Unit, Department of Medical Information, Montpellier University Hospital, University of Montpellier, Montpellier, France
| | - Raissa Medina Santos
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - David Morquin
- Infectious Diseases Department, Montpellier University Hospital, Montpellier, France.,TransVIHMI, IRD, INSERM, University of Montpellier, Montpellier, France
| | - Alimata Ouedraogo
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Alexandra Prieux Lejeune
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,SkillCell, Montpellier, France
| | - Marine Quenot
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | | | - Francisco Checa Robles
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Carolina Rodrigues Rego
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.,Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Nicolas Salvetat
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Charline Trento
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Diana Vetter
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France
| | - Franck Molina
- Sys2Diag UMR9005 CNRS ALCEN, Cap Gamma, Parc Euromédecine, 1682 rue de la Valsière, CS 40182, 34184, Montpellier, CEDEX 4, France.
| | - Jacques Reynes
- Infectious Diseases Department, Montpellier University Hospital, Montpellier, France.,TransVIHMI, IRD, INSERM, University of Montpellier, Montpellier, France
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