Incorrect haplogroup assignment at FTDNA


Posts: 116
Joined: Tue Mar 20, 2012 3:38 am
PostPosted: Wed May 09, 2012 2:20 am
We just got a new FMS test results in the U5 project with an incorrect haplogroup assignment by FTDNA. The person is U5b1b2 but is labeled U5b1c. Looks like they have a problem with their algorithm to assign haplogroups. Has anyone else seen this problem?

Posts: 43
Joined: Fri Apr 20, 2012 10:24 pm

MtDNA:
H24
PostPosted: Thu May 10, 2012 2:58 am
How do the mutations match up with this table?

http://www.familytreedna.com/mtDNA-Hapl ... tions.aspx

Posts: 116
Joined: Tue Mar 20, 2012 3:38 am
PostPosted: Thu May 10, 2012 6:00 am
Ann Turner wrote:How do the mutations match up with this table?

http://www.familytreedna.com/mtDNA-Hapl ... tions.aspx


The HVR1 results are 16172C, 16189C, 16192T, 16270T, 16311C. The person does not have 15191C which defines U5b1c, and does have 12618A which defines U5b1b. The table incorrectly includes 7385G, 10927C, 12618A as mutations for U5b1b, but 7385G and 10927C are now defining mutations for U5b1b1. This person has 217C and is actually U5b1b2, but since the table is out of date, it looks like FTDNA ignored the coding region definitions for U5b1b and U5b1c and then incorrectly assigned the person to U5b1c, perhaps based on 16311C. We have 8 other people who are U5b1b2 and all were correctly assigned to U5b1b, but this is the first person in the group with 16311C and also the first one incorrectly assigned to U5b1c.

16311C is a very frequent mutation in U5, it occurs in more than 10% of the test results and is found in many different subclades of both U5a and U5b, so it is not a reliable marker for subclade definitions in U5 by itself.

I emailed FTDNA about this but no response yet.

thanks,
Gail

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