Latest News

New Release 29!

June 12, 2009: We have updated the database and added 30 new or updated population samples with 2,687 haplotypes. Most of these new haplotypes have been typed in the 17 locus (YFiler) format. The YHRD has now 74,742 haplotypes in 565 populations, 23% (17,384) of these with the maximal extension. The new populations sets stem from 9 countries (Belarus, Brazil, Jordan, Maroc, Mexico, Russia, Sri Lanka, Taiwan, Uganda).

Update: Mutation rates and AMOVA

June 3, 2009: We have edited the Research page and included a comprehensive list of mutations and mutation rates per Y-STR locus as well as related information. Furthermore we improved the AMOVA calculation e.g. to allow the inclusion of population sets in your analysis. We switched from Kruskal's (Venables & Ripley 2002) to Sammon's formula (Sammon 1969) to calculate the MDS plot. The main difference between the two approaches is that Sammon's formula places more emphasis to small distances due to an additional normalization term.

De-bug release

March 23, 2009: Thanks to Mark Jobling, we were able to identify some duplicates of haplotypes with mutations at DYS385. There were 19 duplicates in the database:

Population	Removed duplicated haplotypes
Central Bohemia, Czech Republic [Czech]	1
Malaysia [Malay]	1
Bhutan [Bhutanese]	4
Malaysia [Han Chinese]	3
Taiwan [Han]	1
Minnan, China [Han]	1
Buenos Aires, Argentina [European]	1
London, United Kingdom [Indo-Pakistani]	1
Viet Nam [Vietnamese]	1
England-Wales, United Kingdom [Chinese]	1
Chengdu, China [Han]	2
Northern Portugal [Portuguese]	1
Berlin, Germany [German]	1
Sum	19

There were also 8 wrong assignements of samples with mutations. All populations were cross-checked with their original submissions and all invalid duplications were removed. For this we created a new release R28. This serious data error was caused by an unintentional import of two different versions of the old mutation table from YHRD 2.0 in July 2008. We apologize for that. Please contact us if you need more specific informations about affected haplotypes or populations.

New Release 27!

February 13, 2009: We have updated the database and added 19 new or updated population samples with 3,974 haplotypes. Most of these new haplotypes have been typed in the 17 locus (YFiler) format. The YHRD has now 72,082 haplotypes, 22% (15,956) of these with the maximal extension. The new populations sets stem from 6 countries (Greenland, Kuweit, Italy, Spain, Tunisia, United States of America). We thank all colleagues for their contributions: Carmen Tomas Mas, Charlotte Hallenberg and Niels Morling from Copenhagen, Denmark http://www.yhrd.org/YC000109, Arthur Eisenberg, Bruce Budowle, Lisa Calandro, Manohar Furtado from Quantico, Houston and Foster City, USA http://www.yhrd.org/YC000179, Achmed Rebai and Imen Ayadi from Sfax, Tunisia http://www.yhrd.org/YC000177 and Antonia Picornell Rigo from Palma de Mallorca, Spain http://www.yhrd.org/YC000178 All contributors have passed QC and received YHRD accession numbers for each contributed population sample (YA003475-YA003493).

New Release 26!

We have updated the database and added 16 new or updated population samples with 2,943 haplotypes. Most of these new haplotypes have been typed in the 17 locus (YFiler) format. The YHRD has now 68,108 haplotypes, 13,089 of these with the maximal extension. The new populations sets stem from 9 countries (Germany, Czech Republic, Greece, China, Poland, Brazil, Turkey, Italy and Argentina). We thank all colleagues for their contributions: Miguel Marino from Mendoza, Argentina, Jodi Irwin from AFDIL, Rockville, USA, Andrea Verzeletti from Brescia, Italy, Lu Di from Beijing, China, Nie Shengjie from Kunming, China, Daniel Vanek from Prague, Czech Republic, Paulina Wolańska-Nowak from Krakow, Poland, Omer Gokcumen from Ankara, Turkey, Jürgen and Lotte Henke from Cologne, Germany, Tadeusz Dobosz from Wroclaw, Poland, Rafal Ploski from Warsaw, Poland. All contributors have passed QC and received YHRD accession numbers for each contributed population sample (YA003461-YA003472).

Workshop History

Check out the chronicle of the Y User Workshops, a forum where analysts and renowned scientists gathered to discuss the theory, techniques and applications of Y-STR haplotyping from the very beginning. Y chromosome profiling is nowadays a well accepted method in forensics and anthropology with the YHRD database as a platform of many sampling projects, tools and documents. The 7th Forensic Y-User Workshop (in conjunction with the 4th EMPOP User meeting) will be held again in Berlin, Germany, 22-24 April 2010.

Website First Aid

Have you trouble using parts of the database? Do you observe unexpected results? Please follow these steps:

1. Check that all modern techniques needed to use this website are available: Tech Check. Please inform your local administrator about failing parts of this test.
2. Did you login before you started searching the database? Otherwise you'll be restricted to two searches, even if you got an account.
3. Please don't use the "Next" and "Back" buttons of your browser, it's likely to cause problems with integrated maps and AJAX requests.
4. Do you block ads? Please make sure that neither Google Analytics nor Google Maps are blocked.
5. Search in the Spam folder of your email account, when looking for missing activation/validation emails from the server.

If anything else, contact us.

Release 25 is out

We have updated and corrected the database and added 35 new population samples with 6,203 haplotypes. Most of these new haplotypes have been typed in the 17 locus (YFiler) format. The YHRD has now 65,165 haplotypes, 10,201 of these with the maximal extension. The new populations sets stem from 14 countries (Italy, Brazil, Morocco, China, South Korea, Iran, Azerbaijan, Costarica, Portugal, Namibia, Bangladesh, Algeria, Albania and Romania). We thank all colleagues for their contributions: Gianmarco Ferri from Modena, Luiz Fernando Jobim from Porto Alegre, Rachid Aboukalid from Rabat, Weiwei Wu from Hangzhou, Soon-Ja Kang from Seoul, Laurent Palet from Toulouse, Ivan Nasidze from Leipzig, Corné Hogerheijde from Amsterdam, Mónica Carvalho from Coimbra, Haruo Takeshita from Izumo, Sharif Akhteruzzaman from Dhaka, Carlo Robino from Torino and Florin Stanciu from Bucharest. All contributors have passed QC and received YHRD accession numbers for each contributed population sample (YA003437-YA003458).

Numbers

After being online for a month now, it's time summarize the use of the database with some numbers.

	Search Haplotypes	Calculate AMOVA
Overall	12.534	36
Registered users	2964	36
Number of unique users	183	13

• 42.061 site impressions
• 4.553 visits
• 2.010 unique visitors
• 355 registered users

• average CPU load 12% with a maximum of 77%
• average network load 1,03MB/s with a maximum of 41.46MB/s
• total bytes transfered 717.3MB

Third Rebirth

Please welcome our new baby! It was a lot of work, but finally the new system is here and is waiting for your Database Search or an AMOVA Calculation.