Background: The use of new high-resolution and forensic identification capabilities for population studies offered by new multiplex methods (such as Yfiler Plus) is crucial in forensic genetics cases. The development of haplotype frequency databases is essential to take full advantage of the new Y chromosome determination capabilities.
Purpose: Development of the haplotype database of the Yfiler Plus kit for a population-based sample of 534 males from northeastern Poland and calculation of suitability parameters for forensic genetics studies.
Materials And Methods: The study was conducted on a population sample of 534 unrelated males from the area of northeastern Poland using the Yfiler Plus panel of 27 markers located on the Y chromosome.
Results: Four haplotypes appeared twice. The Discrimination Capacity (DC) of the entire set was 0.9925. The highest Gene Diversity (GD) value was calculated for DYS518 (0.86) belonging to the fast-mutation markers, while the lowest GD was calculated for DYS392 (0.42).
Conclusion: The results indicate the need for further research and observation of changes, both in different regions of Poland and across Europe.
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http://dx.doi.org/10.4467/16891716AMSIK.22.022.17622 | DOI Listing |
Forensic Sci Res
March 2023
Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Sciences, Ministry of Justice, China, Shanghai, China.
Unlabelled: Y-chromosome short tandem repeats (Y-STRs) have a unique role in forensic investigation. However, low-medium mutating Y-STRs cannot meet the requirements for male lineage differentiation in inbred populations, whereas rapidly mutating (RM) high-resolution Y-STRs might cause unexpected exclusion of paternal lineages. Thus, combining Y-STRs with low and high mutation rates helps to distinguish male individuals and lineages in family screening and analysis of genetic relationships.
View Article and Find Full Text PDFElectrophoresis
October 2022
Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen, P. R. China.
In an attempt to increase the discrimination capacity (DC) and reduce the adventitious match probability, a 6-dye multiplex Y-chromosomal short tandem repeat (Y-STR) panel named Y34plex was constructed that combined 25 Y-chromosomal markers (DYS456, DYS627, DYS390, DYS570, DYS635, DYS385a/b, DYS448, DYS437, DYS533, DYS449, DYS481, DYS392, DYS391, DYS389I, DYS460, YGATAH4, DYS438, DYS389II, DYS19, DYS458, DYF387S1a/b, DYS439, DYS393, DYS576, and DYS518) in widely used commercial kits, with nine highly polymorphic Y-STR loci (DYS557, DYS527a/b, DYS593, DYS444, DYS596, DYS643, DYS447, DYS549, and DYS645). The Y34plex is a promising type system to distinguish both unrelated and related male individuals due to the incorporation of rapidly mutated Y-STR loci. A validation study of the Y34plex was performed and followed the guidelines of the Scientific Working Group on DNA analysis methods.
View Article and Find Full Text PDFFront Genet
January 2022
School of Forensic Medicine, Southern Medical University, Guangzhou, China.
The Y-chromosomal short tandem repeat (Y-STR) is an effective forensic tool in familial searches and patrilineal relationship evaluation. However, currently available Y-STR panels often lack sufficient discriminatory power to resolve genetic relationships between distant relatives or within patrilocal populations. This study aims to establish a novel Y-STR amplification system for forensic casework analysis and database construction, which contains 44 slowly and moderately mutating and one rapidly mutating Y-STR.
View Article and Find Full Text PDFForensic Sci Int Genet
March 2022
State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China. Electronic address:
Improving the resolution of the current widely used Y-chromosomal short tandem repeat (Y-STR) dataset is of great importance for forensic investigators, and the current approach is limited, except for the addition of more Y-STR loci. In this research, a regional Y-DNA database was investigated to improve the Y-STR haplotype resolution utilizing a Y-SNP Pedigree Tagging System that includes 24 Y-chromosomal single nucleotide polymorphism (Y-SNP) loci. This pilot study was conducted in the Chinese Yunnan Zhaoyang Han population, and 3473 unrelated male individuals were enrolled.
View Article and Find Full Text PDFArch Med Sadowej Kryminol
January 2022
Medical University of Białystok, Poland.
Background: The use of new high-resolution and forensic identification capabilities for population studies offered by new multiplex methods (such as Yfiler Plus) is crucial in forensic genetics cases. The development of haplotype frequency databases is essential to take full advantage of the new Y chromosome determination capabilities.
Purpose: Development of the haplotype database of the Yfiler Plus kit for a population-based sample of 534 males from northeastern Poland and calculation of suitability parameters for forensic genetics studies.
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