News & Updates

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 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 almost 4 years ago)


YHRD downtime

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 almost 4 years ago)


Release 57

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.

A minor update on the Kinship Tool has been implemented. Please see the revised and corrected formula used at the YHRD.

(posted about 4 years ago)


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 about 4 years ago)



We would like to emphasize again that the YHRD does not contain any personal data linked to the haplotypes retrieved from population studies. It is therefore impossible to connect a Y-STR profile (haplotype) to a person or its relatives via the YHRD.

(posted about 4 years ago)

* See FAQ/Glossary ( for further explanations of abbreviated terms used here