R-Z198 incl. R-SRY2627

R-Z198 and subclades R-ZS312 (incl. R-SRY2627), R-CTS4188 and R-L165
  • 1648 members

About us

2024 Jan 08: Denis Beauregard joined the R-Z198 administrative team. Denis administers the French Heritage Project, which includes many R-Z198 lines.

2023 Dec 31
: We close 2023 with a total of 1,622 members and 1,076 branches under R-Z198.  

2023 Aug 18: A new milestone! The branch count under R-Z198 surpassed 1,000 branches! Eight new branches were added overnight for a total of 1,002: A12-FGC11232, B23-BY92746, H20-FTA55663, L33-Y85206, L33-FTA91930, L35-BY132682, M31-BY56685, M31-BY120245. One branch in L33, BY43586 at position 18573058 (under FT79531), was removed.

2023 Jun 23: SNP CTS4015 at position 13223752 (under Z200) was removed from the tree due to being recurrent. A record 17 new branches were added overnight.

2023 Apr 18
: After 15 years of being named the R SRY2627/Z198/L176 Project, today the project received an updated name to reflect that Z198 is the lead SNP. We are now the R-Z198 incl. R-SRY2627 Project!

2023 Apr 01: Major restructuring of the branches under R-Z198; of the previous 9 subbranches L165, ZS312, BY50344, Y29886, FGC35857, Y131814, CTS4188, FTC605 and FTD87054, only 2 remain after new SNP Z46513 was added immediately below Z198. In addition, a second new branch FT40720 was placed directly under R-Z198 for which new subgroup N00 was created. Z198's subbranches are now CTS4188, FTC605, Z46513 (new) and FT40720 (new). The other 7 branches mentioned above were moved under Z46513. All K subgroups were renamed to M due to this change.
About Z46513 from administrator Gareth Henson:

Z46513 is not a SNP in the strict meaning of the term, it is a deletion of three bases in a very short (and stable) STR. The analyst at FTDNA has confirmed that it behaves consistently within R-Z198 and only recurs in two very small branches elsewhere in the tree. Although it is in the X Trans Region (so the surrounding segments have homologs on the X chromosome) it doesn't seem to have been affected by X-Y recombination. Credit for spotting the mutation goes to Alex Williamson, creator of the 'Big Tree'.

2023 Mar 10: New SNP FTD87054 placed directly under R-Z198; it replaced and became the parent of ZS4817, the previous SNP directly under Z198.

2023 Feb 25: 900 branches under Z198!

2023 Feb 14: FTDNA released the Group Time Tree for Big Y testers in group projects.

2022 Sep 17: 800 branches under Z198!

2022 Jul 22: New SNP Y131814 placed directly under R-Z198; it replaced and became the parent of Y131828, the previous SNP directly under Z198.

2022 Jun 30: FTDNA released the Discover Haplogroup Report for all Y-DNA testers.

2021 Fall: New branch FTC605 directly under Z198 added from analysis of ancient samples from the La Almoloya archaeological site in Spain (Villalba-Mouco et al. 2021).

2021 Aug 11: Lucy Nelson joined the R-Z198 administrative team. 

Data as of April 2023

Archived News:

April 2008
The project was started on 7th March 2008.
As at 20th April 2008 we have 11 members with positive results for SRY2627 and one more who is waiting for SNP test results.
Two members have tested positive for the new SNP known as P312 or rs34276300 which appears to be shared by a majority of R1b1b individuals. It suggests that there is a "western" variety of R1b1b of which R-SRY2627 is one of several subgroups.
NB now that we have two confirmed positive results for P312 we can be confident that anyone who is SRY2627+ is also P312+. Members of the R-SRY2627 Project are therefore advised not to test for this SNP. If you are interested in further testing please consider ordering from the Advanced Orders Y-STR panels.

January 2010
FTDNA have discovered a new mutation through the "Walk on the Y" Project and have named it L176.2 (it is so named because it is identical with a mutation which occurred independently in another branch of Haplogroup R - the mutation in that branch is called L176.1). This mutation was found to exist in one R-SRY2627+ individual and one other R-P312 sample who is SRY2627-. The test for L176.2 can now be purchased from the Advanced Orders Menu for $29 plus a sample transfer fee of $9.50. So far ALL members of R-SRY2627 who have ordered this test have tested positive, we do not yet have a second positive sample from outside of R-SRY2627. It is hoped this mutation in conjunction with SRY2627 will shed more light on the history of haplogroup R in western Europe.

July 2010
More SRY2627- L176.2+ individuals have been found and some of these have L165+ so this mutation is also of interest to this project.

March 2011
FTDNA have updated their Haplogroup tree and have relaunched their Deep Clade Test product which now includes L176.2, SRY2627 and L165. The test promises to allocate each customer to a terminal branch of the tree - hopefully as a result more L176.2+, SRY2627+ and L165+ lines will be discovered. These SNPs can also all be ordered individually from the Advanced Tests Menu.

April 2015
For "work-in-progress" tree diagrams for R-Z198 please see the following links:
The Big Tree (Alex Williamson) 
(with DYS490 overlay) 

(Project Background July 2015)
SRY2627 (also known as M167) was one of the first Single Nucleotide Polymorphisms (SNPs) discovered in the human Y chromosome, back in 1997.
It is now known to denote a subgroup of haplogroup R1b1 - the most common haplogroup in Western Europe. The subgroup was formerly known as R1b1c6. See http://www.isogg.org/tree/ISOGG_HapgrpR.html for its current designation on the ISOGG tree. It is not a large subgroup of R1b, but it is found particularly in places where R1b1 is very common - Iberia (especially the north and west i.e. the Basque Country and Catalunya), southwestern France and up the Atlantic coast to England, Wales, Ireland and Scotland.
Academic research papers and other published information about R-SRY2627 are being referenced on a Wikipedia page here:


The Genographic "Geno 2.0" test has validated a number of SNPs which define subgroups of R-SRY2627.
The most significant subgroups are:


FTDNA customers who are R-SRY2627 are advised to contact the Project Administrators if they are unsure which tests to take to place them in the correct subgroup.

Other SNPs being investigated:

L176.2 is a mutation discovered in FTDNA's own research lab.
The 2011 FTDNA and ISOGG haplogroup trees recognised L176.2 as being "upstream" of SRY2627 (i.e. the SRY2627 mutation occurred in an individual whose paternal line already had theL176.2 mutation).
Very little is known about its geographical distribution and anyone who has a L176.2+ result (whether also SRY2627+ or not)is encouraged to join this Project to help investigate its origins, history and relevance to genetic genealogy.

Z198 is a mutation discovered in 2011/2 by a group of "citizen scientists" investigating data published by the 1000 Genomes Project. Along with several other SNPs discovered in R-SRY2627 samples, it has been included in the chip for the Geno2.0 Project. It appears to be upstream of SRY2627 and equivalent to L176.2.Anyone with Z198+ amongst their Geno 2.0 results is very welcome to join this Project.

L165 (aka S68) is downstream of L176.2 and Z198, and is parallel to SRY2627. It has been found mainly in lines of Scottish and Scandinavian ancestry. We are investigating the connection between this "northern" group with the "southern" SRY2627+ branches.
L165 also has its own FTDNA Project. FTDNA/Geno2.0 customers with L165+ are welcome to join both projects.

CTS4188 is downstream of L176.2 and Z198, parallel to SRY2627 and L165. It was included in the Geno 2.0 test and is being investigated. FTDNA have included it in their 2014 tree - anyone who is R-CTS4188 is eligible to join this Project.

ZS312 (aka M7953) is downstream of L176.2 and Z198, and upstream of SRY2627 (it has also occurred independently in haplogroup J).
To date 4 subgroups have been found:
R-Z262 - comprises all of R-SRY2627 and a small number of lines which are Z262+ SRY2627-
R-A477 - discovered via the Big Y test
R-CTS9993 - seen in an anonymous research sample and to date 2 project members who have tested Big Y
R-M3920 - found in 2 project members who are also positive for L147 (a highly recurrent SNP)