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Abstract
Our understanding of genetic disease(s) has increased exponentially since the completion of human genome sequencing and the development of numerous techniques to detect genetic variants. These techniques have not only allowed us to diagnose genetic disease, but in so doing, also provide increased understanding of the pathogenesis of these diseases to aid in developing appropriate therapeutic options. Additionally, the advent of next-generation or massively parallel sequencing (NGS/MPS) is increasingly being used in the clinical setting, as it can detect a number of abnormalities from point mutations to chromosomal rearrangements as well as aberrations within the transcriptome. In this article, we will discuss the use of multiple techniques that are used in genetic diagnosis. © 2020 by John Wiley & Sons, Inc.
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Affiliation(s)
- Rashmi S Goswami
- Department of Laboratory Medicine and Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.,Sunnybrook Research Institute, Biological Sciences, Odette Cancer Research Program, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Shuko Harada
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
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Rosas-Vara D, Molina-Contreras JR, Villalobos-Piña F, Zenteno JC, Buentello-Volante B, Chacon-Camacho OF, Ayala-Ramírez R, Frausto-Reyes C, Hernández-Martínez R, Ríos-Corripio MA. Point mutation in the TGFBI gene: surface-enhanced infrared absorption spectroscopy (SEIRAS) as an analytical method. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00948-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jiang J, Wang C, Yu X, Sheng D, Zuo C, Ren M, Wu Y, Shen J, Jin M, Xu S. PCR-sequencing is a complementary method to amplification refractory mutation system for EGFR gene mutation analysis in FFPE samples. Exp Mol Pathol 2015; 99:581-9. [PMID: 26477713 DOI: 10.1016/j.yexmp.2015.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 10/07/2015] [Accepted: 10/13/2015] [Indexed: 11/25/2022]
Abstract
Amplification Refractory Mutation System (ARMS) is the most popular technology for EGFR gene mutation analysis in China. Cutoff Ct or ΔCt values were used to differentiate low mutation abundance cases from no mutation cases. In this study, all of 359 NSCLC samples were tested by ARMS. Seventeen samples with larger Ct or ΔCt than cutoff values were retested by PCR-sequencing. TKI treatment responses were monitored on the cases with ARMS negative and PCR-sequencing positive results. One exon 18 G719X case, 67 exon 19 deletion cases, 2 exon 20 insertion cases, 1 exon 20 T790M case, 60 exon 21 L858R cases, 5 exon 21 L861Q cases and 201 wild type cases were identified by ARMS. Another 22 cases were evaluated as wild type but had later amplification fluorescent curves. Seventeen out of these 22 cases were retested by PCR-sequencing. It turns out that 3 out of 3 cases with exon 19 deletion later amplifications, 2 out of 2 cases with L858R later amplifications and 4 out of 12 cases with T790M later amplifications were identified as mutation positive. Two cases with exon 19 deletion and L858R respectively were treated by TKI and got responses. Our study indicated that PCR-sequencing might be a complementary way to confirm ARMS results with later amplifications.
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Affiliation(s)
- Junchang Jiang
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Chunhua Wang
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China; Department of Pathology, The Second Hospital of Jiaxing, Jiaxing, Zhejiang 314000, China
| | - Xiaoli Yu
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Danli Sheng
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Chen Zuo
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China; Key Laboratory of Diagnostic Medicine designated by the Ministry of Education, Chongqing Medical University, Chongqing 400016, China
| | - Minpu Ren
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Yaqin Wu
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Jie Shen
- Department of Ophthalmology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Mei Jin
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China
| | - Songxiao Xu
- Department of Pathology, Sir Run Run Shaw Hospital, Medical School, Zhejiang University, Hangzhou, Zhejiang 310016, China.
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