1
|
Flores M, Ly C, Ho E, Ceberio N, Felix K, Thorner HM, Guardado M, Paunovich M, Godek C, Kalaydjian C, Rohlfs R. Decreased accuracy of forensic DNA mixture analysis for groups with lower genetic diversity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.25.554311. [PMID: 37745566 PMCID: PMC10515773 DOI: 10.1101/2023.08.25.554311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Forensic investigation of DNA samples from multiple contributors has become commonplace. These complex analyses use statistical frameworks accounting for multiple levels of uncertainty in allelic contributions from different individuals, particularly for samples containing few molecules of DNA. These methods have been thoroughly tested along some axes of variation, but less attention has been paid to accuracy across human genetic variation. Here, we quantify the accuracy of DNA mixture analysis over 244 human groups. We find higher false inclusion rates for mixtures with more contributors, and for groups with lower genetic diversity. Even for two-contributor mixtures where one contributor is known and the reference group is correctly specified, false inclusion rates are 1e-5 or higher for 56 out of 244 groups. This means that, depending on multiple testing, some false inclusions may be expected. These false positives could be lessened with more selective and conservative use of DNA mixture analysis.
Collapse
Affiliation(s)
- Maria Flores
- San Francisco State University; Department of Biology; San Francisco, CA, 94132, USA
- University of California, Los Angeles; Department of Molecular, Cell and Developmental Biology; Los Angeles, CA, 90095, USA
| | - Cara Ly
- San Francisco State University; Department of Biology; San Francisco, CA, 94132, USA
| | - Evan Ho
- San Francisco State University; Department of Biology; San Francisco, CA, 94132, USA
| | - Niquo Ceberio
- San Francisco State University; Department of Biology; San Francisco, CA, 94132, USA
| | - Kamillah Felix
- San Francisco State University; Department of Biology; San Francisco, CA, 94132, USA
| | - Hannah Mariko Thorner
- George Washington University; Department of Forensic Sciences - Forensic Molecular Biology; Washington, DC, 20007, USA
| | - Miguel Guardado
- University of California, San Francisco; Biological and Medical Informatics Graduate Program; San Francisco CA, 94143, USA
| | - Matt Paunovich
- San Francisco State University; Department of Biology; San Francisco, CA, 94132, USA
| | - Chris Godek
- San Francisco State University; Department of Mathematics; San Francisco, CA, 94132, USA
| | - Carina Kalaydjian
- San Francisco State University; Department of Mathematics; San Francisco, CA, 94132, USA
| | - Rori Rohlfs
- San Francisco State University; Department of Biology; San Francisco, CA, 94132, USA
- University of Oregon; Department of Data Science; Eugene, OR, 97403, USA
| |
Collapse
|
2
|
Adnan A, Anwar A, Simayijiang H, Farrukh N, Hadi S, Wang CC, Xuan JF. The Heart of Silk Road "Xinjiang," Its Genetic Portray, and Forensic Parameters Inferred From Autosomal STRs. Front Genet 2021; 12:760760. [PMID: 34976009 PMCID: PMC8719170 DOI: 10.3389/fgene.2021.760760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/27/2021] [Indexed: 11/13/2022] Open
Abstract
The Xinjiang Uyghur Autonomous Region of China (XUARC) harbors almost 50 ethnic groups including the Uyghur (UGR: 45.84%), Han (HAN: 40.48%), Kazakh (KZK: 6.50%), Hui (HUI: 4.51%), Kyrgyz (KGZ: 0.86%), Mongol (MGL: 0.81%), Manchu (MCH: 0.11%), and Uzbek (UZK: 0.066%), which make it one of the most colorful regions with abundant cultural and genetic diversities. In our previous study, we established allelic frequency databases for 14 autosomal short tandem repeats (STRs) for four minority populations from XUARC (MCH, KGZ, MGL, and UZK) using the AmpFlSTR® Identifiler PCR Amplification Kit. In this study, we genotyped 2,121 samples using the GoldenEye™ 20A Kit (Beijing PeopleSpot Inc., Beijing, China) amplifying 19 autosomal STR loci for four major ethnic groups (UGR, HAN, KZK, and HUI). These groups make up 97.33% of the total XUARC population. The total number of alleles for all the 19 STRs in these populations ranged from 232 (HAN) to 224 (KZK). We did not observe any departures from the Hardy-Weinberg equilibrium (HWE) in these populations after sequential Bonferroni correction. We did find minimal departure from linkage equilibrium (LE) for a small number of pairwise combinations of loci. The match probabilities for the different populations ranged from 1 in 1.66 × 1023 (HAN) to 6.05 × 1024 (HUI), the combined power of exclusion ranged from 0.999 999 988 (HUI) to 0.999 999 993 (UGR), and the combined power of discrimination ranged from 0.999 999 999 999 999 999 999 983 (HAN) to 0.999 999 999 999 999 999 999 997 (UGR). Genetic distances, principal component analysis (PCA), STRUCTURE analysis, and the phylogenetic tree showed that genetic affinity among studied populations is consistent with linguistic, ethnic, and geographical classifications.
Collapse
Affiliation(s)
- Atif Adnan
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University, Shenyang, China
- Department of Forensic Sciences, College of Criminal Justice, Naif Arab University of Security Sciences, Riyadh, Kingdom of Saudi Arabia
- Department of Anthropology and Ethnology, School of Sociology and Anthropology, Institute of Anthropology, Xiamen University, Xiamen, China
| | - Adeel Anwar
- Department of Orthopedic Surgery, The 3rd Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Halimureti Simayijiang
- Department of Forensic Medicine, School of Basic Medical Sciences, Binzhou Medical University, Yantai, China
| | - Noor Farrukh
- Department of Forensic Sciences, College of Criminal Justice, Naif Arab University of Security Sciences, Riyadh, Kingdom of Saudi Arabia
| | - Sibte Hadi
- Department of Forensic Sciences, College of Criminal Justice, Naif Arab University of Security Sciences, Riyadh, Kingdom of Saudi Arabia
| | - Chuan-Chao Wang
- Department of Anthropology and Ethnology, School of Sociology and Anthropology, Institute of Anthropology, Xiamen University, Xiamen, China
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, National Institute for Data Science in Health and Medicine, Xiamen University, Xiamen, China
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
| | - Jin-Feng Xuan
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University, Shenyang, China
| |
Collapse
|
3
|
Wang D, Zhang T, Xu R, Dong Z, Li C, Cui W. Genetic polymorphisms of 23 STR loci of Goldeneye™ 25A kit in Shandong Han population. Forensic Sci Int Genet 2019; 40:e256-e258. [PMID: 30826257 DOI: 10.1016/j.fsigen.2019.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 12/27/2018] [Accepted: 02/03/2019] [Indexed: 10/27/2022]
Affiliation(s)
- Dan Wang
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical School, PR China
| | - Ting Zhang
- Yanzhou Hospital of Traditional Chinese Medicine, PR China
| | - Ruoyang Xu
- Yanzhou Public Security Bureau, PR China
| | | | - Changzheng Li
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical School, PR China
| | - Wen Cui
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical School, PR China.
| |
Collapse
|
4
|
Zhan X, Adnan A, Zhou Y, Khan A, Kasim K, McNevin D. Forensic characterization of 15 autosomal STRs in four populations from Xinjiang, China, and genetic relationships with neighboring populations. Sci Rep 2018; 8:4673. [PMID: 29549272 PMCID: PMC5856808 DOI: 10.1038/s41598-018-22975-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/05/2018] [Indexed: 11/29/2022] Open
Abstract
The Xinjiang Uyghur Autonomous Region of China (XUARC) harbors 47 ethnic groups including the Manchu (MCH: 0.11%), Mongols (MGL: 0.81%), Kyrgyz (KGZ: 0.86%) and Uzbek (UZK: 0.066%). To establish DNA databases for these populations, allele frequency distributions for 15 autosomal short tandem repeat (STR) loci were determined using the AmpFlSTR Identifiler PCR amplification kit. There was no evidence of departures from Hardy-Weinberg equilibrium (HWE) in any of the four populations and minimal departure from linkage equilibrium (LE) for a very small number of pairwise combinations of loci. The probabilities of identity for the different populations ranged from 1 in 1.51 × 1017 (MCH) to 1 in 9.94 × 1018 (MGL), the combined powers of discrimination ranged from 0.99999999999999999824 (UZK) to 0.9999999999999999848 (MCH) and the combined probabilities of paternal exclusion ranged from 0.9999979323 (UZK) to 0.9999994839 (MCH). Genetic distances, a phylogenetic tree and principal component analysis (PCA) revealed that the MCH, KGZ and UZK are genetically closer to the Han population of Liaoning and the Mongol population of Mongolia while the MGL are closer to Han, Japanese, Korean, Malaysian, Hong Kong Han and Russians living in China.
Collapse
Affiliation(s)
- Xiaoni Zhan
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University, Shenyang, 110122, P.R. China
| | - Atif Adnan
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University, Shenyang, 110122, P.R. China.
| | - Yuzhang Zhou
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University, Shenyang, 110122, P.R. China
| | - Amjad Khan
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University, Shenyang, 110122, P.R. China
| | - Kadirya Kasim
- Department of Forensic Genetics, School of Forensic Medicine, China Medical University, Shenyang, 110122, P.R. China
| | - Dennis McNevin
- National Centre for Forensic Studies, Faculty of Science & Technology, University of Canberra, Canberra, Australia
| |
Collapse
|
5
|
Lei L, Xu J, Du Q, Fu L, Zhang X, Yu F, Ma C, Cong B, Li S. Genetic polymorphism of the 26 short tandem repeat loci in the Chinese Hebei Han population using two commercial forensic kits. Mol Biol Rep 2014; 42:217-25. [DOI: 10.1007/s11033-014-3761-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 09/19/2014] [Indexed: 10/24/2022]
|
6
|
Allele frequencies of 19 autosomal STR loci in Manchu population of China with phylogenetic structure among worldwide populations. Gene 2013; 529:282-7. [DOI: 10.1016/j.gene.2013.07.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 06/26/2013] [Accepted: 07/06/2013] [Indexed: 11/18/2022]
|