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Tao R, Wang S, Zhang J, Zhang J, Yang Z, Sheng X, Hou Y, Zhang S, Li C. Separation/extraction, detection, and interpretation of DNA mixtures in forensic science (review). Int J Legal Med 2018; 132:1247-1261. [PMID: 29802461 DOI: 10.1007/s00414-018-1862-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 05/11/2018] [Indexed: 02/08/2023]
Abstract
Interpreting mixed DNA samples containing material from multiple contributors has long been considered a major challenge in forensic casework, especially when encountering low-template DNA (LT-DNA) or high-order mixtures that may involve missing alleles (dropout) and unrelated alleles (drop-in), among others. In the last decades, extraordinary progress has been made in the analysis of mixed DNA samples, which has led to increasing attention to this research field. The advent of new methods for the separation and extraction of DNA from mixtures, novel or jointly applied genetic markers for detection and reliable interpretation approaches for estimating the weight of evidence, as well as the powerful massively parallel sequencing (MPS) technology, has greatly extended the range of mixed samples that can be correctly analyzed. Here, we summarized the investigative approaches and progress in the field of forensic DNA mixture analysis, hoping to provide some assistance to forensic practitioners and to promote further development involving this issue.
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Affiliation(s)
- Ruiyang Tao
- Institute of Forensic Medicine, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, People's Republic of China.,Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Ministry of Justice, Academy of Forensic Sciences, Shanghai, 200063, People's Republic of China
| | - Shouyu Wang
- Institute of Forensic Medicine, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Jiashuo Zhang
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Ministry of Justice, Academy of Forensic Sciences, Shanghai, 200063, People's Republic of China.,Department of Forensic Science, Medical School of Soochow University, Suzhou, 215123, People's Republic of China
| | - Jingyi Zhang
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Ministry of Justice, Academy of Forensic Sciences, Shanghai, 200063, People's Republic of China.,Department of Forensic Science, Medical School of Soochow University, Suzhou, 215123, People's Republic of China
| | - Zihao Yang
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Ministry of Justice, Academy of Forensic Sciences, Shanghai, 200063, People's Republic of China.,Department of Forensic Medicine, School of Basic Medical Science, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China
| | - Xiang Sheng
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Ministry of Justice, Academy of Forensic Sciences, Shanghai, 200063, People's Republic of China.,Department of Forensic Science, Medical School of Soochow University, Suzhou, 215123, People's Republic of China
| | - Yiping Hou
- Institute of Forensic Medicine, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Suhua Zhang
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Ministry of Justice, Academy of Forensic Sciences, Shanghai, 200063, People's Republic of China.
| | - Chengtao Li
- Institute of Forensic Medicine, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, People's Republic of China. .,Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Ministry of Justice, Academy of Forensic Sciences, Shanghai, 200063, People's Republic of China.
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Bright JA, Buckleton JS, Taylor D, Fernando MACSS, Curran JM. Modeling forward stutter: Toward increased objectivity in forensic DNA interpretation. Electrophoresis 2014; 35:3152-7. [DOI: 10.1002/elps.201400044] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 08/13/2014] [Accepted: 08/14/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Jo-Anne Bright
- ESR Ltd.; Auckland New Zealand
- Department of Statistics; University of Auckland; Auckland New Zealand
| | | | | | - M. A. C. S. S. Fernando
- Department of Statistics; University of Auckland; Auckland New Zealand
- Department of Economics and Statistics; Sabaragamuwa University of Sri Lanka; Belihuloya Sri Lanka
| | - James M. Curran
- Department of Statistics; University of Auckland; Auckland New Zealand
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