News & Updates
In the course of this update we used a new tool for pairwise comparison of all 1251 population samples in order to identify possible data overlaps of high-resolution haplotypes. We identified a very small number of datasets (see release history) which were submitted twice under different names. We have erased or updated these submissions. For the US database a theta-corrected match probability calculation is now available when selecting the feature “National Database (with Subpopulations, 2014 SWGDAM-compliant)” (according to SWGDAM guidelines 2014).(posted 12 days ago)
Release 58: USYSTR database now live at YHRD
Based on the descision of the Lineage Marker Committee of SWGDAM the complete US YSTR database (release 4.2.1) is transferred from usystr.org and included in the YHRD. US colleagues can analyze Y-STR profiles according to the current SWGDAM guidelines of 2014 including theta correction und one-sided confidence interval. Please note that the new guidelines in Germany (2018) recommend the DL values to calculate match probabilities. These values are recalculated from release to release for all 33 metapopulations. Overall the YHRD database increases again drastically with now >250k haplotypes (1221 population samples from 135 countries).(posted 2 months ago)
We apologize for the downtime of the YHRD due to a severe server problem. The database went back to work at August 13, 2018, 10:30 am.(posted 3 months ago)
We are proud to announce the latest release of the YHRD: Release R57. More than 9000 YFiler were added to the database and thus summing up to 216,562 minimal and 165,261 YFiler haplotypes worldwide. Please see our Release History for further information on particular submissions.
Additionally an important update on the Discrete Laplace frequency estimation method is part of this release: We have re-calculated the best number of haplotype centers for each Metapopulation. This was not done since release R55, because it takes roughly 3 months on a 16-node cluster and therefore cannot be performed on a regular basis. Please see Discrete Laplace specification of appropriate Metapopulations at the Calculation Summary page.
11th Haploid Markers Workshop 2018
We thank the Institute of Molecular and Forensic Genetics, Collegium Medicum at the Nicolaus Copernicus University Bydgoszcz for organizing the 11th Workshop in Bydgoszcz titled “Inferring ancestry from DNA”. The excellent program with keynotes of Chris Phillips, Mark Jobling and Chris Tyler-Smith, 40 talks and 62 posters attracts 190 participants from 48 countries. The original workshop concept aimed to present the latest research on genome variation in concert with applications of DNA to forensic casework proves again successful. We look forward to 2020.(posted 6 months ago)