1
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Emery MV, Bolhofner K, Spake L, Ghafoor S, Versoza CJ, Rawls EM, Winingear S, Buikstra JE, Loreille O, Fulginiti LC, Stone AC. Targeted enrichment of whole-genome SNPs from highly burned skeletal remains. J Forensic Sci 2024; 69:1558-1577. [PMID: 38415845 DOI: 10.1111/1556-4029.15482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 01/13/2024] [Accepted: 01/19/2024] [Indexed: 02/29/2024]
Abstract
Genetic assessment of highly incinerated and/or degraded human skeletal material is a persistent challenge in forensic DNA analysis, including identifying victims of mass disasters. Few studies have investigated the impact of thermal degradation on whole-genome single-nucleotide polymorphism (SNP) quality and quantity using next-generation sequencing (NGS). We present whole-genome SNP data obtained from the bones and teeth of 27 fire victims using two DNA extraction techniques. Extracts were converted to double-stranded DNA libraries then enriched for whole-genome SNPs using unpublished biotinylated RNA baits and sequenced on an Illumina NextSeq 550 platform. Raw reads were processed using the EAGER (Efficient Ancient Genome Reconstruction) pipeline, and the SNPs filtered and called using FreeBayes and GATK (v. 3.8). Mixed-effects modeling of the data suggest that SNP variability and preservation is predominantly determined by skeletal element and burn category, and not by extraction type. Whole-genome SNP data suggest that selecting long bones, hand and foot bones, and teeth subjected to temperatures <350°C are the most likely sources for higher genomic DNA yields. Furthermore, we observed an inverse correlation between the number of captured SNPs and the extent to which samples were burned, as well as a significant decrease in the total number of SNPs measured for samples subjected to temperatures >350°C. Our data complement previous analyses of burned human remains that compare extraction methods for downstream forensic applications and support the idea of adopting a modified Dabney extraction technique when traditional forensic methods fail to produce DNA yields sufficient for genetic identification.
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Affiliation(s)
- Matthew V Emery
- Department of Anthropology, Binghamton University, Binghamton, New York, USA
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, USA
- Center for Evolution and Medicine, Arizona State University, Life Sciences C, Tempe, Arizona, USA
| | - Katelyn Bolhofner
- Center for Bioarchaeology, Arizona State University, Tempe, Arizona, USA
- School of Interdisciplinary Forensics, Arizona State University, Glendale, Arizona, USA
| | - Laure Spake
- Department of Anthropology, Binghamton University, Binghamton, New York, USA
| | - Suhail Ghafoor
- Center for Evolution and Medicine, Arizona State University, Life Sciences C, Tempe, Arizona, USA
| | - Cyril J Versoza
- Center for Evolution and Medicine, Arizona State University, Life Sciences C, Tempe, Arizona, USA
- School of Life Sciences, Arizona State University, Life Sciences C, Tempe, Arizona, USA
| | - Erin M Rawls
- School of Life Sciences, Arizona State University, Life Sciences C, Tempe, Arizona, USA
| | - Stevie Winingear
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, USA
| | - Jane E Buikstra
- Center for Evolution and Medicine, Arizona State University, Life Sciences C, Tempe, Arizona, USA
- Center for Bioarchaeology, Arizona State University, Tempe, Arizona, USA
| | - Odile Loreille
- FBI Laboratory, DNA Support Unit, Quantico, Virginia, USA
| | - Laura C Fulginiti
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, USA
- Maricopa County Office of the Medical Examiner, Phoenix, Arizona, USA
| | - Anne C Stone
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, USA
- Center for Evolution and Medicine, Arizona State University, Life Sciences C, Tempe, Arizona, USA
- Center for Bioarchaeology, Arizona State University, Tempe, Arizona, USA
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2
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Zhong Y, Zeng K, Adnan A, Li YZ, Hou XK, Pan Y, Li A, Zhu XM, Lv P, Du Z, Yang Y, Yao J. Discrimination of monozygotic twins using mtDNA heteroplasmy through probe capture enrichment and massively parallel sequencing. Int J Legal Med 2023; 137:1337-1345. [PMID: 37270462 DOI: 10.1007/s00414-023-03033-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/30/2023] [Indexed: 06/05/2023]
Abstract
Differentiating between monozygotic (MZ) twins remains difficult because they have the same genetic makeup. Applying the traditional STR genotyping approach cannot differentiate one from the other. Heteroplasmy refers to the presence of two or more different mtDNA copies within a single cell and this phenomenon is common in humans. The levels of heteroplasmy cannot change dramatically during transmission in the female germ line but increase or decrease during germ-line transmission and in somatic tissues during life. As massively parallel sequencing (MPS) technology has advanced, it has shown the extraordinary quantity of mtDNA heteroplasmy in humans. In this study, a probe hybridization technique was used to obtain mtDNA and then MPS was performed with an average sequencing depth of above 4000. The results showed us that all ten pairs of MZ twins were clearly differentiated with the minor heteroplasmy threshold at 1.0%, 0.5%, and 0.1%, respectively. Finally, we used a probe that targeted mtDNA to boost sequencing depth without interfering with nuclear DNA and this technique can be used in forensic genetics to differentiate the MZ twins.
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Affiliation(s)
- Yang Zhong
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Kuo Zeng
- Institute of Evidence Law and Forensic Science, China University of Political Science and Law, Beijing, China
| | - Atif Adnan
- Department of Forensic Sciences, College of Criminal Justice, Naif University of Security Sciences, Riyadh, 11452, Kingdom of Saudi Arabia
| | - Yu-Zhang Li
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Xi-Kai Hou
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Ying Pan
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Ang Li
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Xiu-Mei Zhu
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Peng Lv
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Zhe Du
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China
- China Medical University Center of Forensic Investigation, Chengdu, China
| | - Ying Yang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Jun Yao
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenbei New District, Shenyang, 110122, People's Republic of China.
- Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province, China.
- China Medical University Center of Forensic Investigation, Chengdu, China.
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3
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Shrestha M, Blay S, Liang S, Swanson D, Lerner-Ellis J, Dickson B, Wong A, Charames GS. Improving RNA fusion call confidence and reliability in molecular diagnostic testing. J Mol Diagn 2023; 25:320-330. [PMID: 36958423 DOI: 10.1016/j.jmoldx.2023.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/17/2023] [Accepted: 03/08/2023] [Indexed: 03/25/2023] Open
Abstract
Next-generation sequencing (NGS) is a superior method for detecting known and novel RNA fusions in formalin-fixed paraffin-embedded tissue over FISH and RT-PCR. However, confidence in fusion calling and true negatives may be compromised by poor RNA quality. Using a commercial panel of 507 genes and the recommended 3 million read threshold to accept results, two cases yielded false negatives while exceeding this recommendation during clinical validation. To develop a reliable quality control metric that better reflects internal sample quality and improve call confidence, gene expression across 361 patient tumor samples was evaluated to derive a set of 15 genes to serve as a proxy quality control (pQC). These 15 genes were assessed for their normalized expression using the sequencing data from each case and selected for robustness. A threshold of 11 pQC genes produced a 4.71% fail rate, selected for stringency as an acceptable level of repeat testing in the clinical setting, minimizing false negative calls. To increase the chance that low-quality samples pass pQC, a revision to the library preparation methodology was also tested, with 75% of previously failed samples passing pQC upon re-sequencing by increasing cDNA input. Taken together, an NGS analysis quality control tool is presented that serves as a surrogate for housekeeping genes and improves confidence in fusion calls.
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Affiliation(s)
- Mariusz Shrestha
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 600 University Avenue, Toronto, ON, M5G 1X5, Canada
| | - Sasha Blay
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 600 University Avenue, Toronto, ON, M5G 1X5, Canada; Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Sinai Health, Toronto, ON, Canada
| | - Sydney Liang
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Sinai Health, Toronto, ON, Canada
| | - David Swanson
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Sinai Health, Toronto, ON, Canada
| | - Jordan Lerner-Ellis
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 600 University Avenue, Toronto, ON, M5G 1X5, Canada; Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Sinai Health, Toronto, ON, Canada; Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
| | - Brendan Dickson
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 600 University Avenue, Toronto, ON, M5G 1X5, Canada; Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Sinai Health, Toronto, ON, Canada; Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
| | - Andrew Wong
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Sinai Health, Toronto, ON, Canada
| | - George S Charames
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 600 University Avenue, Toronto, ON, M5G 1X5, Canada; Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Sinai Health, Toronto, ON, Canada; Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada.
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4
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Liu Z, Simayijiang H, Wang Q, Yang J, Sun H, Wu R, Yan J. DNA and protein analyses of hair in forensic genetics. Int J Legal Med 2023; 137:613-633. [PMID: 36732435 DOI: 10.1007/s00414-023-02955-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 01/20/2023] [Indexed: 02/04/2023]
Abstract
Hair is one of the most common pieces of biological evidence found at a crime scene and plays an essential role in forensic investigation. Hairs, especially non-follicular hairs, are usually found at various crime scenes, either by natural shedding or by forcible shedding. However, the genetic material in hairs is usually highly degraded, which makes forensic analysis difficult. As a result, the value of hair has not been fully exploited in forensic investigations and trials. In recent years, with advances in molecular biology, forensic analysis of hair has achieved remarkable strides and provided crucial clues in numerous cases. This article reviews recent developments in DNA and protein analysis of hair and attempts to provide a comprehensive solution to improve forensic hair analysis.
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Affiliation(s)
- Zhiyong Liu
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Halimureti Simayijiang
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, Shanxi, 030600, People's Republic of China
| | - Qiangwei Wang
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Jingyi Yang
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Hongyu Sun
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People's Republic of China.,Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Riga Wu
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People's Republic of China. .,Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People's Republic of China.
| | - Jiangwei Yan
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, Shanxi, 030600, People's Republic of China.
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Canale LC, McElhoe JA, Dimick G, DeHeer KM, Beckert J, Holland MM. Routine Mitogenome MPS Analysis from 1 and 5 mm of Rootless Human Hair. Genes (Basel) 2022; 13:2144. [PMID: 36421819 PMCID: PMC9690917 DOI: 10.3390/genes13112144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 11/14/2022] [Indexed: 08/16/2023] Open
Abstract
While hair shafts are a common evidence type in forensic cases, they are often excluded from DNA analysis due to their limited DNA quantity and quality. Mitochondrial (mt) DNA sequencing is the method of choice when working with rootless hair shaft fragments due to the elevated copy number of mtDNA and the highly degraded nature of nuclear (n) DNA. Using massively parallel sequencing (MPS) of the mitochondrial (mito) genome, we studied the impact of hair age (time since collection) and physical characteristics (hair diameter, medullary structure, and length of hair tested) on mtDNA recovery and MPS data quality. Hair shaft cuttings of 1 and 5 mm from hairs less than five years to 46 years of age from 60 donors were characterized microscopically. Mitogenome sequences were generated using the Promega PowerSeqTM Whole Mito System prototype kit and the Illumina MiSeq instrument. Reportable mitogenome sequences were obtained from all hairs up to 27 years of age (37 donors), with at least 98% of the mitogenome reported for more than 94% of the 74 hair samples analyzed; the minimum reported sequence was 88%. Furthermore, data from the 1 and 5 mm replicates gave concordant haplotypes. As expected, mtDNA yield decreased, mtDNA degradation increased, and mitogenome MPS data quality declined as the age of the hair increased. Hair diameter and medullary structure had minimal impact on yield and data quality. Our findings support that MPS is a robust and reliable method for routinely generating mitogenome sequences from 1 and 5 mm hair shaft samples up to 27 years of age, which is of interest to the forensic community, biological anthropologists, and medical geneticists.
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Affiliation(s)
- Lauren C. Canale
- Forensic Science Program, Department of Biochemistry & Molecular Biology, Eberly College of Science, Pennsylvania State University, University Park, PA 16802, USA
| | - Jennifer A. McElhoe
- Forensic Science Program, Department of Biochemistry & Molecular Biology, Eberly College of Science, Pennsylvania State University, University Park, PA 16802, USA
| | - Gloria Dimick
- Mitotyping Technologies, 2565 Park Center Blvd., Suite 200, State College, PA 16801, USA
| | | | - Jason Beckert
- Microtrace 790 Fletcher Drive, Suite 106, Elgin, IL 60123, USA
| | - Mitchell M. Holland
- Forensic Science Program, Department of Biochemistry & Molecular Biology, Eberly College of Science, Pennsylvania State University, University Park, PA 16802, USA
- Mitotyping Technologies, 2565 Park Center Blvd., Suite 200, State College, PA 16801, USA
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6
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Xavier C, de la Puente M, Mosquera-Miguel A, Freire-Aradas A, Kalamara V, Ralf A, Revoir A, Gross T, Schneider P, Ames C, Hohoff C, Phillips C, Kayser M, Parson W. Development and inter-laboratory evaluation of the VISAGE Enhanced Tool for Appearance and Ancestry inference from DNA. Forensic Sci Int Genet 2022; 61:102779. [DOI: 10.1016/j.fsigen.2022.102779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/14/2022] [Accepted: 09/18/2022] [Indexed: 11/30/2022]
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7
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Munyuza C, Ji H, Lee ER. Probe Capture Enrichment Methods for HIV and HCV Genome Sequencing and Drug Resistance Genotyping. Pathogens 2022; 11:693. [PMID: 35745547 PMCID: PMC9228464 DOI: 10.3390/pathogens11060693] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 01/01/2023] Open
Abstract
Human immunodeficiency virus (HIV) infections remain a significant public health concern worldwide. Over the years, sophisticated sequencing technologies such as next-generation sequencing (NGS) have emerged and been utilized to monitor the spread of HIV drug resistance (HIVDR), identify HIV drug resistance mutations, and characterize transmission dynamics. Similar applications also apply to the Hepatitis C virus (HCV), another bloodborne viral pathogen with significant intra-host genetic diversity. Several advantages to using NGS over conventional Sanger sequencing include increased data throughput, scalability, cost-effectiveness when batched sample testing is performed, and sensitivity for quantitative detection of minority resistant variants. However, NGS alone may fail to detect genomes from pathogens present in low copy numbers. As with all sequencing platforms, the primary determinant in achieving quality sequencing data is the quality and quantity of the initial template input. Samples containing degraded RNA/DNA and/or low copy number have been a consistent sequencing challenge. To overcome this limitation probe capture enrichment is a method that has recently been employed to target, enrich, and sequence the genome of a pathogen present in low copies, and for compromised specimens that contain poor quality nucleic acids. It involves the hybridization of sequence-specific DNA or RNA probes to a target sequence, which is followed by an enrichment step via PCR to increase the number of copies of the targeted sequences after which the samples are subjected to NGS procedures. This method has been performed on pathogens such as bacteria, fungus, and viruses and allows for the sequencing of complete genomes, with high coverage. Post NGS, data analysis can be performed through various bioinformatics pipelines which can provide information on genetic diversity, genotype, virulence, and drug resistance. This article reviews how probe capture enrichment helps to increase the likelihood of sequencing HIV and HCV samples that contain low viral loads and/or are compromised.
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Affiliation(s)
- Chantal Munyuza
- National HIV and Retrovirology Laboratories, National Microbiology Laboratory at JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, MB R3E 3R2, Canada; (C.M.); (H.J.)
| | - Hezhao Ji
- National HIV and Retrovirology Laboratories, National Microbiology Laboratory at JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, MB R3E 3R2, Canada; (C.M.); (H.J.)
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Emma R. Lee
- National HIV and Retrovirology Laboratories, National Microbiology Laboratory at JC Wilt Infectious Diseases Research Centre, Public Health Agency of Canada, Winnipeg, MB R3E 3R2, Canada; (C.M.); (H.J.)
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8
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Muñoz-Valle JF, Venancio-Landeros AA, Sánchez-Sánchez R, Reyes-Díaz K, Galindo-Ornelas B, Hérnandez-Monjaraz WS, García-Ríos A, García-Ortega LF, Hernández-Bello J, Peña-Rodríguez M, Vega-Magaña N, Delaye L, Díaz-Sánchez M, García-González OP. An Upgrade on the Surveillance System of SARS-CoV-2: Deployment of New Methods for Genetic Inspection. Int J Mol Sci 2022; 23:3143. [PMID: 35328562 PMCID: PMC8950365 DOI: 10.3390/ijms23063143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/04/2022] [Accepted: 02/24/2022] [Indexed: 11/24/2022] Open
Abstract
SARS-CoV-2 variants surveillance is a worldwide task that has been approached with techniques such as Next Generation Sequencing (NGS); however, this technology is not widely available in developing countries because of the lack of equipment and limited funding in science. An option is to deploy a RT-qPCR screening test which aids in the analysis of a higher number of samples, in a shorter time and at a lower cost. In this study, variants present in samples positive for SARS-CoV-2 were identified with a RT-qPCR mutation screening kit and were later confirmed by NGS. A sample with an abnormal result was found with the screening test, suggesting the simultaneous presence of two viral populations with different mutations. The DRAGEN Lineage analysis identified the Delta variant, but there was no information about the other three mutations previously detected. When the sequenced data was deeply analyzed, there were reads with differential mutation patterns, that could be identified and classified in terms of relative abundance, whereas only the dominant population was reported by DRAGEN software. Since most of the software developed to analyze SARS-CoV-2 sequences was aimed at obtaining the consensus sequence quickly, the information about viral populations within a sample is scarce. Here, we present a faster and deeper SARS-CoV-2 surveillance method, from RT-qPCR screening to NGS analysis.
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Affiliation(s)
- José Francisco Muñoz-Valle
- Institute for Research in Biomedical Sciences (IICB), University Center for Health Sciences, University of Guadalajara, Guadalajara 44340, Mexico; (J.F.M.-V.); (J.H.-B.); (N.V.-M.)
| | | | | | - Karen Reyes-Díaz
- Research and Development Department, Genes2Life (Grupo T), Irapuato 36615, Mexico; (K.R.-D.); (B.G.-O.); (W.S.H.-M.); (A.G.-R.); (M.D.-S.)
| | - Byron Galindo-Ornelas
- Research and Development Department, Genes2Life (Grupo T), Irapuato 36615, Mexico; (K.R.-D.); (B.G.-O.); (W.S.H.-M.); (A.G.-R.); (M.D.-S.)
| | - Wendy Susana Hérnandez-Monjaraz
- Research and Development Department, Genes2Life (Grupo T), Irapuato 36615, Mexico; (K.R.-D.); (B.G.-O.); (W.S.H.-M.); (A.G.-R.); (M.D.-S.)
| | - Alejandra García-Ríos
- Research and Development Department, Genes2Life (Grupo T), Irapuato 36615, Mexico; (K.R.-D.); (B.G.-O.); (W.S.H.-M.); (A.G.-R.); (M.D.-S.)
| | - Luis Fernando García-Ortega
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV), Irapuato 36824, Mexico; (L.F.G.-O.); (L.D.)
| | - Jorge Hernández-Bello
- Institute for Research in Biomedical Sciences (IICB), University Center for Health Sciences, University of Guadalajara, Guadalajara 44340, Mexico; (J.F.M.-V.); (J.H.-B.); (N.V.-M.)
| | - Marcela Peña-Rodríguez
- Laboratory for the Diagnosis of Emerging and Reemerging Diseases (LaDEER), University Center for Health Sciences, University of Guadalajara, Guadalajara 44340, Mexico;
| | - Natali Vega-Magaña
- Institute for Research in Biomedical Sciences (IICB), University Center for Health Sciences, University of Guadalajara, Guadalajara 44340, Mexico; (J.F.M.-V.); (J.H.-B.); (N.V.-M.)
- Laboratory for the Diagnosis of Emerging and Reemerging Diseases (LaDEER), University Center for Health Sciences, University of Guadalajara, Guadalajara 44340, Mexico;
| | - Luis Delaye
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV), Irapuato 36824, Mexico; (L.F.G.-O.); (L.D.)
| | - Mauricio Díaz-Sánchez
- Research and Development Department, Genes2Life (Grupo T), Irapuato 36615, Mexico; (K.R.-D.); (B.G.-O.); (W.S.H.-M.); (A.G.-R.); (M.D.-S.)
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9
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Rauf S, Austin JJ, Higgins D, Khan MR. Unveiling forensically relevant biogeographic, phenotype and Y-chromosome SNP variation in Pakistani ethnic groups using a customized hybridisation enrichment forensic intelligence panel. PLoS One 2022; 17:e0264125. [PMID: 35176104 PMCID: PMC8853543 DOI: 10.1371/journal.pone.0264125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 02/03/2022] [Indexed: 11/19/2022] Open
Abstract
Massively parallel sequencing following hybridisation enrichment provides new opportunities to obtain genetic data for various types of forensic testing and has proven successful on modern as well as degraded and ancient DNA. A customisable forensic intelligence panel that targeted 124 SNP markers (67 ancestry informative markers, 23 phenotype markers from the HIrisplex panel, and 35 Y-chromosome SNPs) was used to examine biogeographic ancestry, phenotype and sex and Y-lineage in samples from different ethnic populations of Pakistan including Pothwari, Gilgit, Baloach, Pathan, Kashmiri and Siraiki. Targeted sequencing and computational data analysis pipeline allowed filtering of variants across the targeted loci. Study samples showed an admixture between East Asian and European ancestry. Eye colour was predicted accurately based on the highest p-value giving overall prediction accuracy of 92.8%. Predictions were consistent with reported hair colour for all samples, using the combined highest p-value approach and step-wise model incorporating probability thresholds for light or dark shade. Y-SNPs were successfully recovered only from male samples which indicates the ability of this method to identify biological sex and allow inference of Y-haplogroup. Our results demonstrate practicality of using hybridisation enrichment and MPS to aid in human intelligence gathering and will open many insights into forensic research in South Asia.
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Affiliation(s)
- Sobiah Rauf
- Genome Editing & Sequencing Lab, National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Jeremy J. Austin
- Australian Centre for Ancient DNA (ACAD), School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Denice Higgins
- Australian Centre for Ancient DNA (ACAD), School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
- School of Dentistry, Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Muhammad Ramzan Khan
- Genome Editing & Sequencing Lab, National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
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10
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Yu X, Yang H, Liu J, Qi Y, Sun L, Tian X. A strategy for a high enrichment of insect mitochondrial DNA for mitogenomic analysis. Gene 2022; 808:145986. [PMID: 34600050 DOI: 10.1016/j.gene.2021.145986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 11/04/2022]
Abstract
Next-generation sequencing has dramatically fostered insect mitogenomic research in recent years. However, studies on the insect mitochondrial genome (mitogenome) assembly mainly rely on the sequencing data from total DNA, which is not cost-effective as a huge data from nuclear DNA are wasted. Besides, many mitogenomic studies require genomic information from individual organisms, whereas the DNA yield from small individual insects is too low to meet the sequencing requirements. Here, we describe a strategy for a high enrichment of insect mitochondrial DNA (mtDNA) using rolling circle amplification (RCA) technique. This strategy consists of standard DNA extraction, RCA enrichment, next-generation sequencing and mitogenome assembly. We have evaluated the performance of this strategy on nine insect species representing eight families of insecta, three other invertebrates, and even two vertebrate specimens. Results show that our strategy is especially suitable for insects, which allows almost all tested insect mtDNA contents to reach 80% and above. A further examination of enrichment efficiency of our strategy among different taxa shows that it is also applicable to other invertebrates and even some vertebrates such as Rhacophorus and ptyas species, although its enrichment efficiency in these groups is lower than that of insects. After treatment with our strategy, small flux sequencing data can realize the assembly of mitogenome with deep coverage, providing a solid base for subsequent mitogenome-based studies.
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Affiliation(s)
- Xiaolei Yu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hongxia Yang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jie Liu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; GemPharmatech Co. Ltd, Jiangsu, China
| | - Yingju Qi
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Genetron Health (Beijing) Co. Ltd, Beijing, China
| | - Liran Sun
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Novogene Co, Ltd, Tianjin, China
| | - Xiaoxuan Tian
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
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11
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Erlich HA, López-Peña C, Carlberg KT, Shih S, Bali G, Yamaguchi KD, Salamon H, Das R, Lal A, Calloway CD. Non-Invasive Prenatal Test for β-Thalassemia and Sickle Cell Disease Using Probe Capture Enrichment and Next-Generation Sequencing of DNA in Maternal Plasma. J Appl Lab Med 2021; 7:515-531. [PMID: 34849992 DOI: 10.1093/jalm/jfab118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 08/30/2021] [Indexed: 11/14/2022]
Abstract
BACKGROUND Noninvasive prenatal testing (NIPT) of chromosomal aneuploidies based on next-generation sequencing (NGS) analysis of fetal DNA in maternal plasma is well established, but testing for autosomal recessive disorders remains challenging. NGS libraries prepared by probe capture facilitate the analysis of the short DNA fragments plasma. This system has been applied to the β-hemoglobinopathies to reduce the risk to the fetus. METHOD Our probe panel captures >4 kb of the HBB region and 435 single-nucleotide polymorphisms (SNPs) used to estimate fetal fraction. Contrived mixtures of DNA samples, plasma, and whole blood samples from 7 pregnant women with β-thalassemia or sickle cell anemia mutations and samples from the father, sibling, and baby or chorionic villus were analyzed. The fetal genotypes, including point mutations and deletions, were inferred by comparing the observed and expected plasma sequence read ratios, based on fetal fraction, at the mutation site and linked SNPs. Accuracy was increased by removing PCR duplicates and by in silico size selection of plasma sequence reads. A probability was assigned to each of the potential fetal genotypes using a statistical model for the experimental variation, and thresholds were established for assigning clinical status. RESULTS Using in silico size selection of plasma sequence files, the predicted clinical fetal genotype assignments were correct in 9 of 10 plasma libraries with maternal point mutations, with 1 inconclusive result. For 2 additional plasmas with deletions, the most probable fetal genotype was correct. The β-globin haplotype determined from linked SNPs, when available, was used to infer the fetal genotype at the mutation site. CONCLUSION This probe capture NGS assay demonstrates the potential of NIPT for β-hemoglobinopathies.
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Affiliation(s)
- Henry A Erlich
- Department of Genetics and Genomics, Children's Hospital Oakland Research Institute, Oakland, CA, USA
| | - Christian López-Peña
- Department of Genetics and Genomics, Children's Hospital Oakland Research Institute, Oakland, CA, USA
| | - Katie T Carlberg
- Department of Hematology/Oncology, UCSF Benioff Children's Hospital Oakland, Oakland, CA, USA
| | - Shelly Shih
- Department of Genetics and Genomics, Children's Hospital Oakland Research Institute, Oakland, CA, USA
| | - Gunmeet Bali
- Department of Genetics and Genomics, Children's Hospital Oakland Research Institute, Oakland, CA, USA
| | | | | | - Reena Das
- Post Graduate Institute of Medical and Educational Research, Chandigarh, India
| | - Ashutosh Lal
- Department of Hematology/Oncology, UCSF Benioff Children's Hospital Oakland, Oakland, CA, USA
| | - Cassandra D Calloway
- Department of Genetics and Genomics, Children's Hospital Oakland Research Institute, Oakland, CA, USA
- Department of Hematology/Oncology, UCSF Benioff Children's Hospital Oakland, Oakland, CA, USA
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12
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Gorden EM, Greytak EM, Sturk-Andreaggi K, Cady J, McMahon TP, Armentrout S, Marshall C. Extended kinship analysis of historical remains using SNP capture. Forensic Sci Int Genet 2021; 57:102636. [PMID: 34896972 DOI: 10.1016/j.fsigen.2021.102636] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 11/03/2021] [Accepted: 11/16/2021] [Indexed: 11/18/2022]
Abstract
DNA-assisted identification of historical remains requires the genetic analysis of highly degraded DNA, along with a comparison to DNA from known relatives. This can be achieved by targeting single nucleotide polymorphisms (SNPs) using a hybridization capture and next-generation sequencing approach suitable for degraded skeletal samples. In the present study, two SNP capture panels were designed to target ~ 25,000 (25 K) and ~ 95,000 (95 K) nuclear SNPs, respectively, to enable distant kinship estimation (up to 4th degree relatives). Low-coverage SNP data were successfully recovered from 14 skeletal elements 75 years postmortem using an Illumina MiSeq benchtop sequencer. All samples contained degraded DNA but were of varying quality with mean fragment lengths ranging from 32 bp to 170 bp across the 14 samples. SNP comparison with DNA from known family references was performed in the Parabon Fx Forensic Analysis Platform, which utilizes a likelihood approach for kinship prediction that was optimized for low-coverage sequencing data with cytosine deamination. The 25 K panel produced 15,000 SNPs on average, which allowed for accurate kinship prediction with strong statistical support in 16 of the 21 pairwise comparisons. The 95 K panel increased the average SNPs to 42,000 and resulted in an additional accurate kinship prediction with strong statistical support (17 of 21 pairwise comparisons). This study demonstrates that SNP capture combined with massively parallel sequencing on a benchtop platform can yield sufficient SNP recovery from compromised samples, enabling accurate, extended kinship predictions.
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Affiliation(s)
- Erin M Gorden
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, DE, USA; SNA International LLC, Alexandria, VA, USA
| | | | - Kimberly Sturk-Andreaggi
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, DE, USA; SNA International LLC, Alexandria, VA, USA; Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | | | - Timothy P McMahon
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, DE, USA
| | | | - Charla Marshall
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, DE, USA; SNA International LLC, Alexandria, VA, USA; Forensic Science Program, The Pennsylvania State University, State College, PA, USA.
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13
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Burrill J, Daniel B, Frascione N. Technical Note: Lysis and purification methods for increased recovery of degraded DNA from touch deposit swabs. Forensic Sci Int 2021; 330:111102. [PMID: 34814081 DOI: 10.1016/j.forsciint.2021.111102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/15/2021] [Accepted: 11/07/2021] [Indexed: 11/04/2022]
Abstract
Touch deposits are a routine yet challenging sample type in forensic casework and research. Recent work investigating their contents has indicated corneocytes to be the major cellular constituent while cell-free DNA is present at significant levels. Prolonged incubation including a reducing agent such as DTT has been shown to lyse corneocytes; a plasma cfDNA recovery kit which targets shorter DNA fragments has been demonstrated to improve cfDNA recovery from hand rinses. Herein these methods are combined and tested on mock casework touch deposit swabs from communal surface areas. Both fluorescence- and qPCR-based quantification methods are used and their results compared to query DNA degradation levels. Both proposed lysis and purification methods demonstrate increased recovery of DNA detectable with fluorescence quantification and some additional alleles at short loci, indicating high levels of fragmented DNA in these samples.
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Affiliation(s)
- Julia Burrill
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, Institute of Pharmaceutical Sciences, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom.
| | - Barbara Daniel
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, Institute of Pharmaceutical Sciences, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom.
| | - Nunzianda Frascione
- King's Forensics, Department of Analytical, Environmental & Forensic Sciences, Institute of Pharmaceutical Sciences, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom.
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14
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Developments in forensic DNA analysis. Emerg Top Life Sci 2021; 5:381-393. [PMID: 33792660 PMCID: PMC8457771 DOI: 10.1042/etls20200304] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/12/2021] [Accepted: 03/16/2021] [Indexed: 12/20/2022]
Abstract
The analysis of DNA from biological evidence recovered in the course of criminal investigations can provide very powerful evidence when a recovered profile matches one found on a DNA database or generated from a suspect. However, when no profile match is found, when the amount of DNA in a sample is too low, or the DNA too degraded to be analysed, traditional STR profiling may be of limited value. The rapidly expanding field of forensic genetics has introduced various novel methodologies that enable the analysis of challenging forensic samples, and that can generate intelligence about the donor of a biological sample. This article reviews some of the most important recent advances in the field, including the application of massively parallel sequencing to the analysis of STRs and other marker types, advancements in DNA mixture interpretation, particularly the use of probabilistic genotyping methods, the profiling of different RNA types for the identification of body fluids, the interrogation of SNP markers for predicting forensically relevant phenotypes, epigenetics and the analysis of DNA methylation to determine tissue type and estimate age, and the emerging field of forensic genetic genealogy. A key challenge will be for researchers to consider carefully how these innovations can be implemented into forensic practice to ensure their potential benefits are maximised.
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15
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Hofreiter M, Sneberger J, Pospisek M, Vanek D. Progress in forensic bone DNA analysis: Lessons learned from ancient DNA. Forensic Sci Int Genet 2021; 54:102538. [PMID: 34265517 DOI: 10.1016/j.fsigen.2021.102538] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 03/07/2021] [Accepted: 05/25/2021] [Indexed: 01/18/2023]
Abstract
Research on ancient and forensic DNA is related in many ways, and the two fields must deal with similar obstacles. Therefore, communication between these two communities has the potential to improve results in both research fields. Here, we present the insights gained in the ancient DNA community with regard to analyzing DNA from aged skeletal material and the potential use of the developed protocols in forensic work. We discuss the various steps, from choosing samples for DNA extraction to deciding between classical PCR amplification and massively parallel sequencing approaches. Based on the progress made in ancient DNA analyses combined with the requirements of forensic work, we suggest that there is substantial potential for incorporating ancient DNA approaches into forensic protocols, a process that has already begun to a considerable extent. However, taking full advantage of the experiences gained from ancient DNA work will require comparative studies by the forensic DNA community to tailor the methods developed for ancient samples to the specific needs of forensic studies and case work. If successful, in our view, the benefits for both communities would be considerable.
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Affiliation(s)
- Michael Hofreiter
- Institute for Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany.
| | - Jiri Sneberger
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Vinicna 5, Prague 2 12843, Czech Republic; Department of the History of the Middle Ages of Museum of West Bohemia, Kopeckeho sady 2, Pilsen 30100, Czech Republic; Nuclear Physics Institute of the CAS, Na Truhlarce 39/64, Prague 18086, Czech Republic
| | - Martin Pospisek
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Vinicna 5, Prague 2 12843, Czech Republic; Biologicals s.r.o., Sramkova 315, Ricany 25101, Czech Republic
| | - Daniel Vanek
- Forensic DNA Service, Janovskeho 18, Prague 7 17000, Czech Republic; Institute of Legal Medicine, Bulovka Hospital, Prague, Czech Republic; Charles University in Prague, 2nd Faculty of Medicine, Prague, Czech Republic.
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16
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Marshall C, Parson W. Interpreting NUMTs in forensic genetics: Seeing the forest for the trees. Forensic Sci Int Genet 2021; 53:102497. [PMID: 33740708 DOI: 10.1016/j.fsigen.2021.102497] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 01/29/2023]
Abstract
Nuclear mitochondrial DNA (mtDNA) segments (NUMTs) were discovered shortly after sequencing the first human mitochondrial genome. They have earlier been considered to represent archaic elements of ancient insertion events, but modern sequencing technologies and growing databases of mtDNA and NUMT sequences confirm that they are abundant and some of them phylogenetically young. Here, we build upon mtDNA/NUMT review articles published in the mid 2010 s and focus on the distinction of NUMTs and other artefacts that can be observed in aligned sequence reads, such as mixtures (contamination), point heteroplasmy, sequencing error and cytosine deamination. We show practical examples of the effect of the mtDNA enrichment method on the representation of NUMTs in the mapped sequence data and discuss methods to bioinformatically filter NUMTs from mtDNA reads.
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Affiliation(s)
- Charla Marshall
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, DE 19902, USA; SNA International, Contractor Supporting the AFMES-AFDIL, Alexandria, VA 22314, USA; Forensic Science Program, The Pennsylvania State University, University Park, PA 16802, USA
| | - Walther Parson
- Forensic Science Program, The Pennsylvania State University, University Park, PA 16802, USA; Institute of Legal Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria.
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17
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Gorden EM, Sturk-Andreaggi K, Marshall C. Capture enrichment and massively parallel sequencing for human identification. Forensic Sci Int Genet 2021; 53:102496. [PMID: 33770700 DOI: 10.1016/j.fsigen.2021.102496] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 03/05/2021] [Accepted: 03/09/2021] [Indexed: 01/07/2023]
Abstract
In the past decade, hybridization capture has gained attention within the forensic field for its possible use in human identification. One of the primary benefits to capture enrichment is its applicability to degraded DNA fragments that, due to their reduced size, are not amenable to traditional PCR enrichment techniques. Hybridization capture is typically introduced after genomic library preparation of extracted DNA templates for the subsequent enrichment of mitochondrial DNA or single nucleotide polymorphisms within the nuclear genome. The enriched molecules are then subjected to massively parallel sequencing (MPS) for sensitive and high-throughput DNA sequence generation. Bioinformatic analysis of capture product removes PCR duplicates that were introduced during the laboratory workflow in order to characterize the original DNA template molecules. In the case of aged and degraded skeletal remains, the fraction of endogenous human DNA may be very low; therefore low-coverage sequence analysis may be required. This review contains an overview of current capture methodologies and the primary literature on hybridization capture as evaluated for forensic applications.
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Affiliation(s)
- Erin M Gorden
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, Dover, DE, USA; SNA International LLC, Alexandria, VA, USA
| | - Kimberly Sturk-Andreaggi
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, Dover, DE, USA; SNA International LLC, Alexandria, VA, USA; Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Charla Marshall
- Armed Forces Medical Examiner System's Armed Forces DNA Identification Laboratory (AFMES-AFDIL), Dover Air Force Base, Dover, DE, USA; SNA International LLC, Alexandria, VA, USA; Forensic Science Program, The Pennsylvania State University, State College, PA, USA.
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18
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Kling D, Phillips C, Kennett D, Tillmar A. Investigative genetic genealogy: Current methods, knowledge and practice. Forensic Sci Int Genet 2021; 52:102474. [PMID: 33592389 DOI: 10.1016/j.fsigen.2021.102474] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/12/2021] [Accepted: 01/27/2021] [Indexed: 12/15/2022]
Abstract
Investigative genetic genealogy (IGG) has emerged as a new, rapidly growing field of forensic science. We describe the process whereby dense SNP data, commonly comprising more than half a million markers, are employed to infer distant relationships. By distant we refer to degrees of relatedness exceeding that of first cousins. We review how methods of relationship matching and SNP analysis on an enlarged scale are used in a forensic setting to identify a suspect in a criminal investigation or a missing person. There is currently a strong need in forensic genetics not only to understand the underlying models to infer relatedness but also to fully explore the DNA technologies and data used in IGG. This review brings together many of the topics and examines their effectiveness and operational limits, while suggesting future directions for their forensic validation. We further investigated the methods used by the major direct-to-consumer (DTC) genetic ancestry testing companies as well as submitting a questionnaire where providers of forensic genetic genealogy summarized their operation/services. Although most of the DTC market, and genetic genealogy in general, has undisclosed, proprietary algorithms we review the current knowledge where information has been discussed and published more openly.
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Affiliation(s)
- Daniel Kling
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden; Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway.
| | - Christopher Phillips
- Forensic Genetics Unit, Institute of Forensic Sciences, University of Santiago de Compostela, Santiago de Compostela, Spain.
| | - Debbie Kennett
- Research Department of Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Andreas Tillmar
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden; Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
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19
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Schubert AD, Channah Broner E, Agrawal N, London N, Pearson A, Gupta A, Wali N, Seiwert TY, Wheelan S, Lingen M, Macleod K, Allen H, Chatterjee A, Vassiliki S, Gaykalova D, Hoque MO, Sidransky D, Suresh K, Izumchenko E. Somatic mitochondrial mutation discovery using ultra-deep sequencing of the mitochondrial genome reveals spatial tumor heterogeneity in head and neck squamous cell carcinoma. Cancer Lett 2020; 471:49-60. [PMID: 31830557 PMCID: PMC6980748 DOI: 10.1016/j.canlet.2019.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/02/2019] [Accepted: 12/04/2019] [Indexed: 12/17/2022]
Abstract
Mutations in mitochondrial DNA (mtDNA) have been linked to risk, progression, and treatment response of head and neck squamous cell carcinoma (HNSCC). Due to their clonal nature and high copy number, mitochondrial mutations could serve as powerful molecular markers for detection of cancer cells in bodily fluids, surgical margins, biopsies and lymph node (LN) metastasis, especially at sites where tumor involvement is not histologically apparent. Despite a pressing need for high-throughput, cost-effective mtDNA mutation profiling system, current methods for library preparation are still imperfect for detection of low prevalence heteroplasmic mutations. To this end, we have designed an ultra-deep amplicon-based sequencing library preparation approach that covers the entire mitochondrial genome. We sequenced mtDNA in 28 HNSCCs, matched LNs, surgical margins and bodily fluids, and applied multiregional sequencing approach on 14 primary tumors. Our results demonstrate that this quick, sensitive and cost-efficient method allows obtaining a snapshot on the mitochondrial heterogeneity, and can be used for detection of low frequency tumor-associated mtDNA mutations in LNs, sputum and serum specimens. These findings provide the foundation for using mitochondrial sequencing for risk assessment, early detection, and tumor surveillance.
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Affiliation(s)
- Adrian D Schubert
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Esther Channah Broner
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Nishant Agrawal
- Department of Surgery, University of Chicago, Chicago, IL, USA
| | - Nyall London
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Alexander Pearson
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | - Anuj Gupta
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Neha Wali
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Tanguy Y Seiwert
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | - Sarah Wheelan
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Mark Lingen
- Department of Pathology, University of Chicago, Chicago, IL, USA
| | - Kay Macleod
- The Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Hailey Allen
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Aditi Chatterjee
- Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka, India
| | - Saloura Vassiliki
- Thoracic and GI Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Daria Gaykalova
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Mohammad O Hoque
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - David Sidransky
- Department of Otolaryngology and Head & Neck Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Karthik Suresh
- Division of Pulmonary Critical Care Medicine, Johns Hopkins University School of Medicine. Baltimore, MD, USA
| | - Evgeny Izumchenko
- Department of Medicine, Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA.
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20
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Butler JM, Willis S. Interpol review of forensic biology and forensic DNA typing 2016-2019. Forensic Sci Int Synerg 2020; 2:352-367. [PMID: 33385135 PMCID: PMC7770417 DOI: 10.1016/j.fsisyn.2019.12.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 12/10/2019] [Indexed: 12/23/2022]
Abstract
This review paper covers the forensic-relevant literature in biological sciences from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20Review%20Papers%202019.pdf.
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21
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Mohamed Nasir N, Hiji J, Jayapalan JJ, Hashim OH. Potential use of human hair shaft keratin peptide signatures to distinguish gender and ethnicity. PeerJ 2020; 8:e8248. [PMID: 32030317 PMCID: PMC6995659 DOI: 10.7717/peerj.8248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/20/2019] [Indexed: 12/13/2022] Open
Abstract
Background Most human hairs collected at old crime scenes do not contain nuclear DNA and are therefore of less value for forensic investigations. In the present study, hair shaft proteins were extracted from 40 healthy subjects between the ages of 21 to 40 years and profiled using gel electrophoresis-based proteomics to determine if they can be used to distinguish gender and ethnicity. Methods Extraction of the human hair shaft proteins was performed using a newly developed alkaline solubilisation method. The extracts were profiled by 2-dimensional electrophoresis and resolved protein spots were identified by mass spectrometry and queried against the human hair database. The study was then followed-up by immunoblotting of the identified hair shaft keratin of interest using commercially available antibodies. Results Separation of the human hair shaft proteins by 2-dimensional electrophoresis generated improved and highly resolved profiles. Comparing the hair shaft protein profiles of 10 female with 10 male subjects and their identification by mass spectrometry and query of the human hair database showed significant altered abundance of truncated/processed type-II keratin peptides K81 (two spots), K83 (one spot) and K86 (three spots). The 2-dimensional electrophoresis profiling of 30 hair shaft samples taken from women of similar age range but from three distinctive ethnic subpopulations in Malaysia further showed significant altered abundance of one type-I and four type-II truncated/processed keratin peptides including K33b, K81, K83 and K86 (2 spots) between at least two of the ethnic groups. When a followed-up immunoblotting experiment was performed to detect the relative expression of the K86 peptides using commercialised antibodies, similar trends of expression were obtained. The present data, when taken together, demonstrated the potential use of keratin peptide signatures of the human hair shaft to distinguish gender and ethnicity although this needs to be further substantiated in a larger scale study.
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Affiliation(s)
- Nurdiena Mohamed Nasir
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Wilayah Persekutuan, Malaysia
| | - Jumriah Hiji
- University of Malaya Center for Proteomics Research, Faculty of Medicine, University of Malaya, Kuala Lumpur, Wilayah Persekutuan, Malaysia
| | - Jaime Jacqueline Jayapalan
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Wilayah Persekutuan, Malaysia.,University of Malaya Center for Proteomics Research, Faculty of Medicine, University of Malaya, Kuala Lumpur, Wilayah Persekutuan, Malaysia
| | - Onn Haji Hashim
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Wilayah Persekutuan, Malaysia.,University of Malaya Center for Proteomics Research, Faculty of Medicine, University of Malaya, Kuala Lumpur, Wilayah Persekutuan, Malaysia
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22
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Resolution of mtDNA mixtures using a probe capture next generation sequencing system and custom analysis software. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.10.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Young JM, Higgins D, Austin JJ. Hybridization Enrichment to Improve Forensic Mitochondrial DNA Analysis of Highly Degraded Human Remains. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00450] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Resolving mitochondrial haplogroups B2 and B4 with next-generation mitogenome sequencing to distinguish Native American from Asian haplotypes. Forensic Sci Int Genet 2019; 43:102143. [DOI: 10.1016/j.fsigen.2019.102143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/31/2019] [Accepted: 08/12/2019] [Indexed: 12/18/2022]
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Avila E, Graebin P, Chemale G, Freitas J, Kahmann A, Alho CS. Full mtDNA genome sequencing of Brazilian admixed populations: A forensic-focused evaluation of a MPS application as an alternative to Sanger sequencing methods. Forensic Sci Int Genet 2019; 42:154-164. [PMID: 31325893 DOI: 10.1016/j.fsigen.2019.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 07/03/2019] [Accepted: 07/08/2019] [Indexed: 12/13/2022]
Abstract
The use of Massive Parallel Sequencing (MPS) techniques have been proposed by the forensic community as an alternative to Sanger sequencing methods in routine forensic casework analysis regarding mitochondrial DNA (mtDNA). Interesting features of MPS include high throughput, ability to simultaneously genotype a significant number of samples by barcoding techniques, processing automation, reduced time and costs, among others. Advantages include the capability of generating full mtDNA genome sequences versus usual techniques, usually limited to hypervariable or control regions exclusively. In this work, 96 reference single-source samples from three different Brazilian cities were subjected to full mtDNA genome sequencing by MPS techniques using an early-access version of Precision ID mtDNA Whole Genome Panel on an Ion Torrent PGM platform (Thermo Fisher Scientific, Waltham, MA, USA). Complete, high-quality sequences were obtained and sequencing performance was evaluated via four different metrics. As a subset of evaluated samples have been previously submitted for Sanger sequencing of the control region, a comparative analysis of both methods' results was conducted in order to compare technique adequacy within a forensic context. Even though this study is one of the first to report full mtDNA genome sequences for Brazilian admixed populations, the observed haplotypes exhibit a predominance of Native American and African maternal lineages in the studied sample set, reproducing results described in the literature for control regions only. Interpopulation analysis among Brazilian and 26 worldwide populations was also carried out. The results indicate that MPS-generated full mtDNA genome sequences may have great utility in forensic real casework applications, with a pronounced gain of genetic information and discrimination power provided by coding region evaluation and the enhanced capacity of heteroplasmies determination. Database construction and other relevant factors concerning implementation of such techniques in Brazilian forensic laboratories are also discussed.
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Affiliation(s)
- E Avila
- Setor Técnico-Científico, Superintendência Regional do Rio Grande do Sul, Polícia Federal, Porto Alegre, Brazil; Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil; Instituto Nacional de Ciência e Tecnologia INCT Ciências Forenses, Porto Alegre, Brazil.
| | - P Graebin
- Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - G Chemale
- Setor Técnico-Científico, Superintendência Regional do Rio Grande do Sul, Polícia Federal, Porto Alegre, Brazil
| | - J Freitas
- Instituto Nacional de Criminalística, Polícia Federal, Brasília, DF, Brazil
| | - A Kahmann
- Instituto de Matemática, Estatística e Física, Universidade Federal de Rio Grande, Rio Grande, Brazil
| | - C S Alho
- Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil; Instituto Nacional de Ciência e Tecnologia INCT Ciências Forenses, Porto Alegre, Brazil
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Comparison of protein expression levels and proteomically-inferred genotypes using human hair from different body sites. Forensic Sci Int Genet 2019; 41:19-23. [DOI: 10.1016/j.fsigen.2019.03.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 02/14/2019] [Accepted: 03/10/2019] [Indexed: 11/18/2022]
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27
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Liu F, Zhong K, Jing X, Uitterlinden AG, Hendriks AEJ, Drop SLS, Kayser M. Update on the predictability of tall stature from DNA markers in Europeans. Forensic Sci Int Genet 2019; 42:8-13. [PMID: 31207428 DOI: 10.1016/j.fsigen.2019.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 05/08/2019] [Accepted: 05/27/2019] [Indexed: 10/26/2022]
Abstract
Predicting adult height from DNA has important implications in forensic DNA phenotyping. In 2014, we introduced a prediction model consisting of 180 height-associated SNPs based on data from 10,361 Northwestern Europeans enriched with tall individuals (770 > 1.88 standard deviation), which yielded a mid-ranged accuracy (AUC = 0.75 for binary prediction of tall stature and R2 = 0.12 for quantitative prediction of adult height). Here, we provide an update on DNA-based height predictability considering an enlarged list of subsequently-published height-associated SNPs using data from the same set of 10,361 Europeans. A prediction model based on the full set of 689 SNPs showed an improved accuracy relative to previous models for both tall stature (AUC = 0.79) and quantitative height (R2 = 0.21). A feature selection analysis revealed a subset of 412 most informative SNPs while the corresponding prediction model retained most of the accuracy (AUC = 0.76 and R2 = 0.19) achieved with the full model. Over all, our study empirically exemplifies that the accuracy for predicting human appearance phenotypes with very complex underlying genetic architectures, such as adult height, can be improved by increasing the number of phenotype-associated DNA variants. Our work also demonstrates that a careful sub-selection allows for a considerable reduction of the number of DNA predictors that achieve similar prediction accuracy as provided by the full set. This is forensically relevant due to restrictions in the number of SNPs simultaneously analyzable with forensically suitable DNA technologies in the current days of targeted massively parallel sequencing in forensic genetics.
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Affiliation(s)
- Fan Liu
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China; Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - Kaiyin Zhong
- Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - Xiaoxi Jing
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China.
| | - André G Uitterlinden
- Department of Internal Medicine, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - A Emile J Hendriks
- Department of Pediatrics, Pediatric Endocrinology and Diabetes, University of Cambridge, United Kingdom.
| | - Stenvert L S Drop
- Department of Pediatrics, Division of Endocrinology, Sophia Children's Hospital, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - Manfred Kayser
- Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands.
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28
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Brandhagen MD, Loreille O, Irwin JA. Fragmented Nuclear DNA is the Predominant Genetic Material in Human Hair Shafts. Genes (Basel) 2018; 9:genes9120640. [PMID: 30567392 PMCID: PMC6316335 DOI: 10.3390/genes9120640] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/03/2018] [Accepted: 12/10/2018] [Indexed: 01/18/2023] Open
Abstract
While shed hairs are one of the most commonly encountered evidence types, they are among the most limited in terms of DNA quantity and quality. As a result, nuclear DNA short tandem repeat (STR) profiling is generally unsuccessful and DNA testing of shed hair is instead performed by targeting the mitochondrial DNA control region. Although the high copy number of mitochondrial DNA relative to nuclear DNA routinely permits the recovery of mitochondrial DNA (mtDNA) data in these cases, mtDNA profiles do not offer the discriminatory power of nuclear DNA profiles. In order to better understand the total content and degradation state of DNA in single shed hairs and assess the feasibility of recovering highly discriminatory nuclear DNA data from this common evidence type, high throughput shotgun sequencing was performed on both recently collected and aged (approximately 50-year-old) hair samples. The data reflect trends that have been demonstrated previously with other technologies, namely that mtDNA quantity and quality decrease along the length of the hair shaft. In addition, the shotgun data reveal that nuclear DNA is present in shed hair and surprisingly abundant relative to mitochondrial DNA, even in the most distal fragments. Nuclear DNA comprised, at minimum, 88% of the total human reads in any given sample, and generally more than 95%. Here, we characterize both the nuclear and mitochondrial DNA content of shed hairs and discuss the implications of these data for forensic investigations.
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Affiliation(s)
- Michael D Brandhagen
- DNA Support Unit, FBI Laboratory, 2501 Investigation Parkway, Quantico, VA 22135, USA.
| | - Odile Loreille
- DNA Support Unit, FBI Laboratory, 2501 Investigation Parkway, Quantico, VA 22135, USA.
| | - Jodi A Irwin
- DNA Support Unit, FBI Laboratory, 2501 Investigation Parkway, Quantico, VA 22135, USA.
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Bose N, Carlberg K, Sensabaugh G, Erlich H, Calloway C. Target capture enrichment of nuclear SNP markers for massively parallel sequencing of degraded and mixed samples. Forensic Sci Int Genet 2018. [DOI: 10.1016/j.fsigen.2018.01.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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30
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Shih SY, Bose N, Gonçalves ABR, Erlich HA, Calloway CD. Correction: Shelly Y. Shih; et al.; Applications of Probe Capture Enrichment Next Generation Sequencing for Whole Mitochondrial Genome and 426 Nuclear SNPs for Forensically Challenging Samples. Genes 2018, 9, 49. Genes (Basel) 2018; 9:genes9020090. [PMID: 29443895 PMCID: PMC5852586 DOI: 10.3390/genes9020090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 11/16/2022] Open
Abstract
The authors wish to make the following change to their paper [1][...].
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Affiliation(s)
- Shelly Y Shih
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA.
| | - Nikhil Bose
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA.
- Forensic Science Graduate Program, University of California, Davis, 1909 Galileo Ct. Ste. B, Davis, CA 95618, USA.
| | - Anna Beatriz R Gonçalves
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA.
- Laboratório de Diagnósticos por DNA (LDD), Universidade do Estado do Rio de Janeiro (UERJ), Instituto de Biologia Roberto Alcantara Gomes (IBRAG), Rua São Francisco Xavier, number 524, Pavilhão Haroldo Lisboa da Cunha, Rio de Janeiro 20550-900, RJ, Brazil.
| | - Henry A Erlich
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA.
| | - Cassandra D Calloway
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA.
- Forensic Science Graduate Program, University of California, Davis, 1909 Galileo Ct. Ste. B, Davis, CA 95618, USA.
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