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Development of a 40 linked autosomal STRs panel using massively parallel sequencing. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Novroski NMM, Wendt FR, Woerner AE, Bus MM, Coble M, Budowle B. Expanding beyond the current core STR loci: An exploration of 73 STR markers with increased diversity for enhanced DNA mixture deconvolution. Forensic Sci Int Genet 2018; 38:121-129. [PMID: 30396008 DOI: 10.1016/j.fsigen.2018.10.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/29/2018] [Accepted: 10/21/2018] [Indexed: 12/13/2022]
Abstract
Current approaches to mixture deconvolution of complex biological samples at times do not have the capability to resolve component contributors in DNA evidence. Additional short tandem repeat (STR) loci were sought that may improve the forensic genetic analysis of mixtures. This study presents exploratory data of a multiplex comprised of 73 highly polymorphic STRs (referred herein as the 73Plex) that were selected because of their high diversity due to sequence variation. These STRs (or a subset of them) may be considered as candidates that may augment current core markers capabilities for DNA mixture deconvolution. Population genetics analyses were performed for each locus using DNA samples from 451 individuals comprising three U.S. populations. Sequence-based heterozygosities ranged from 72% to 98%, where only two loci (D10A97 and D6A7) fell below 80%. Mixture deconvolution capabilities for two-person mixtures were assessed based on complete allele resolution per locus (i.e., four alleles observed) of pairwise mixtures using in silico methods. A subset of 20 highly informative loci (referred herein as the 20Plex) from the 73Plex was compared to the 20 CODIS core loci on all population samples with full DNA profiles for both panels (i.e., no locus dropout; n = 443). Based on proportion of loci displaying four alleles, the 20Plex outperformed the CODIS core loci with increases of 82.6% and 89.3% using length-based and sequence-based alleles, respectively. A combination of 17 STR from the 20Plex and 3 CODIS loci gave the highest capacity for resolving allelic components per locus. These data illustrate the increased value of utilizing sequenced-based alleles of additional STR loci. Furthermore, there are a number of candidate STR loci that could notably augment the current core STR loci and enhance mixture interpretation capabilities.
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Affiliation(s)
- Nicole M M Novroski
- Center for Human Identification, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA.
| | - Frank R Wendt
- Center for Human Identification, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - August E Woerner
- Center for Human Identification, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Magdalena M Bus
- Center for Human Identification, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Michael Coble
- Center for Human Identification, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Bruce Budowle
- Center for Human Identification, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
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Phillips C. A genomic audit of newly-adopted autosomal STRs for forensic identification. Forensic Sci Int Genet 2017; 29:193-204. [DOI: 10.1016/j.fsigen.2017.04.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 04/03/2017] [Accepted: 04/14/2017] [Indexed: 10/19/2022]
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Liu QL, Xue L, Wu WW, He X, liu KY, Zhao H, Lu DJ. Potential of 13 linked autosomal short tandem repeat loci in pairwise kinship analysis. Electrophoresis 2016; 37:2800-2806. [DOI: 10.1002/elps.201600238] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 08/02/2016] [Accepted: 08/23/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Qiu-Ling Liu
- Faculty of Forensic Medicine, Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou P. R. China
| | - Li Xue
- Faculty of Forensic Medicine, Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou P. R. China
| | - Wei-Wei Wu
- Department of Criminal Investigation of Zhejiang Provincial Public Security Bureau; Hangzhou P. R. China
| | - Xin He
- Faculty of Forensic Medicine, Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou P. R. China
| | - Kai-Yan liu
- Faculty of Forensic Medicine, Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou P. R. China
| | - Hu Zhao
- Faculty of Forensic Medicine, Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou P. R. China
| | - De-Jian Lu
- Faculty of Forensic Medicine, Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou P. R. China
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Population data of 13 nonCODIS STR markers located inside the 6 nonsyndromic oculocutaneous albinism genes. Int J Legal Med 2016; 130:1485-1486. [DOI: 10.1007/s00414-016-1342-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 02/16/2016] [Indexed: 11/26/2022]
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