News & Updates

NO GENEALOGICAL DATA AT YHRD

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 24 days ago)

 

Release 56

YHRD has now more than 207.000 Y-STR haplotypes. Remember, in December 2011 we crossed the 100k (release 39). The current release 56 provides more than 10.000 new haplotypes, among these >1000 with SNP information from Belgium, Netherlands, UK, Argentina and Macedonia (see release history).

(posted about 1 month ago)

 

New Y-STR interpretation guidelines for Germany

Two articles (in German) describe how the YHRD is used to interprete Y-STR results in forensic practice, see

Willuweit, S., Anslinger, K., Bäßler, G. et al. ‘Joint recommendations of the project group “Statistical analysis of DNA” and the German Stain Commission on the statistical analysis of Y‑chromosomal DNA typing results’ Rechtsmedizin (2018)

Roewer, L. & Willuweit, S. ‘Y‑chromosomal STR analysis in forensic practice’ Rechtsmedizin (2018)

(posted 2 months ago)

 

11th Haploid Markers Conference “Inferring Ancestry from DNA”

Registration open

To attend the Haploid Markers 2018 workshop at 17-19th May 2018 in Bydgoszcz and to present a talk and/or poster, please register on-line at HM2018

(posted 6 months ago)

 

Release 55

Yet another huge update of the YHRD. More than 9000 Yfiler, 5000 PPY23 and almost 4000 YfilerPlus haplotypes have been added (see release history).

As a major change, we’ve updated the Discrete Laplace haplotype frequency estimation method as follows:

• DL is calculated for minimal and Yfiler haplotype resolution only.
• The static cut-off of 1.0e-08 was replaced by a metapopulation-specific cut-off described in a publication soon to be published. To give a quick glimpse: We apply a certain distribution to the histogram of DL estimates of all singleton haplotypes found in a particular metapopulation and take the 50% quantile as the estimation limit (cut-off).
• Please see the updated list of feasible metapopulations for an overview on the availability of DL.

Additionally, we implemented a neighbor search (+/- one allelic mutation step per locus) accessible for everybody as a new ancestry information feature.

(posted 7 months ago)