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Villa RD, Pentella MA, Benfer JL. A Laboratory-Developed Assay for Clade II Human Mpox Virus on the Panther Fusion Open Access System. J Infect Dis 2024; 229:S132-S136. [PMID: 37681583 DOI: 10.1093/infdis/jiad347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 09/09/2023] Open
Abstract
This paper describes the methods for developing and optimizing a laboratory-developed assay (LDA) for detecting clade II human mpox virus using the automated Panther Fusion platform and Open Access software. Various concentrations of reagents in a primer-probe mix were tested to optimize the LDA. The LDA was validated using 10 previously characterized positive and 10 negative human mpox samples, resulting in 95% accuracy and 100% precision. The LDA resulted in 100% specificity among previously tested HSV1-, HSV2-, and VZV-positive human samples. Several spiked media extensions were also validated and achieved 98% accuracy and 100% precision across all collection media types. The assay's limit of detection was calculated to be 1.475 copies/reaction, and the polymerase chain reaction efficiency resulted in 89.87% (slope, -3.5911; R2 = 0.9947). The methods described here can be applied to the rapid optimization and development of LDAs for many possible pathogens of public health importance.
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Harvey JJ, Chester S, Burke SA, Ansbro M, Aden T, Gose R, Sciulli R, Bai J, DesJardin L, Benfer JL, Hall J, Smole S, Doan K, Popowich MD, St George K, Quinlan T, Halse TA, Li Z, Pérez-Osorio AC, Glover WA, Russell D, Reisdorf E, Whyte T, Whitaker B, Hatcher C, Srinivasan V, Tatti K, Tondella ML, Wang X, Winchell JM, Mayer LW, Jernigan D, Mawle AC. Comparative analytical evaluation of the respiratory TaqMan Array Card with real-time PCR and commercial multi-pathogen assays. J Virol Methods 2015; 228:151-7. [PMID: 26640122 PMCID: PMC7113746 DOI: 10.1016/j.jviromet.2015.11.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 11/19/2015] [Accepted: 11/25/2015] [Indexed: 12/24/2022]
Abstract
Viral and bacterial real-time PCR oligonucleotides were spotted on TaqMan Array Cards. Analytical sensitivity was compared with standalone laboratory PCR assays. TaqMan Array Card sensitivity was generally one log lower. Reproducibility across six independent testing sites was within one log.
In this study, a multicenter evaluation of the Life Technologies TaqMan® Array Card (TAC) with 21 custom viral and bacterial respiratory assays was performed on the Applied Biosystems ViiA™ 7 Real-Time PCR System. The goal of the study was to demonstrate the analytical performance of this platform when compared to identical individual pathogen specific laboratory developed tests (LDTs) designed at the Centers for Disease Control and Prevention (CDC), equivalent LDTs provided by state public health laboratories, or to three different commercial multi-respiratory panels. CDC and Association of Public Health Laboratories (APHL) LDTs had similar analytical sensitivities for viral pathogens, while several of the bacterial pathogen APHL LDTs demonstrated sensitivities one log higher than the corresponding CDC LDT. When compared to CDC LDTs, TAC assays were generally one to two logs less sensitive depending on the site performing the analysis. Finally, TAC assays were generally more sensitive than their counterparts in three different commercial multi-respiratory panels. TAC technology allows users to spot customized assays and design TAC layout, simplify assay setup, conserve specimen, dramatically reduce contamination potential, and as demonstrated in this study, analyze multiple samples in parallel with good reproducibility between instruments and operators.
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Affiliation(s)
- John J Harvey
- Battelle Technical On-Site Professional Services, Atlanta, GA, 30329 USA; Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA.
| | - Stephanie Chester
- Association of Public Health Laboratories, Silver Spring, MD, 20904 USA
| | - Stephen A Burke
- Battelle Technical On-Site Professional Services, Atlanta, GA, 30329 USA; Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Marisela Ansbro
- Battelle Technical On-Site Professional Services, Atlanta, GA, 30329 USA; Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Tricia Aden
- Battelle Technical On-Site Professional Services, Atlanta, GA, 30329 USA; Association of Public Health Laboratories, Silver Spring, MD, 20904 USA
| | - Remedios Gose
- Hawaii Department of Health State Laboratories, Pearl City, HI, 96782 USA
| | - Rebecca Sciulli
- Hawaii Department of Health State Laboratories, Pearl City, HI, 96782 USA
| | - Jing Bai
- Iowa State Hygienic Laboratory, Coralville, IA, 52241 USA
| | - Lucy DesJardin
- Iowa State Hygienic Laboratory, Coralville, IA, 52241 USA
| | | | - Joshua Hall
- William A. Hinton State Laboratory Institute, Jamaica Plain, MA, 02130 USA
| | - Sandra Smole
- William A. Hinton State Laboratory Institute, Jamaica Plain, MA, 02130 USA
| | - Kimberly Doan
- William A. Hinton State Laboratory Institute, Jamaica Plain, MA, 02130 USA
| | - Michael D Popowich
- Wadsworth Center, New York State Department of Health, Albany, NY, 12201-0509 USA
| | - Kirsten St George
- Wadsworth Center, New York State Department of Health, Albany, NY, 12201-0509 USA
| | - Tammy Quinlan
- Wadsworth Center, New York State Department of Health, Albany, NY, 12201-0509 USA
| | - Tanya A Halse
- Wadsworth Center, New York State Department of Health, Albany, NY, 12201-0509 USA
| | - Zhen Li
- Washington State Public Health Laboratories, Shoreline, WA, 98155-7224 USA
| | | | - William A Glover
- Washington State Public Health Laboratories, Shoreline, WA, 98155-7224 USA
| | - Denny Russell
- Washington State Public Health Laboratories, Shoreline, WA, 98155-7224 USA
| | - Erik Reisdorf
- Wisconsin State Laboratory of Hygiene, Madison, WI, USA
| | - Thomas Whyte
- Wisconsin State Laboratory of Hygiene, Madison, WI, USA
| | - Brett Whitaker
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Cynthia Hatcher
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Velusamy Srinivasan
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Kathleen Tatti
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Maria Lucia Tondella
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Xin Wang
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Jonas M Winchell
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Leonard W Mayer
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Daniel Jernigan
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
| | - Alison C Mawle
- Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, Atlanta, GA, 30329-4027 USA
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