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Thread: Percent HTZ out of range - Gedmatch

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  1. #1
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    Percent HTZ out of range - Gedmatch

    What does that mean? I've got it when converting Ancestry data to 23andMe v5 and uploading to Gedmatch .
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     johnny wilson (11-19-2019)

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    I'm also getting this error.

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     aaronbee2010 (11-14-2019)

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    This is a new security feature GEDmatch has implemented to prevent database attacks using artificially created files that could reveal the base pair information about any user in the database. It means that GEDmatch looked at your file and decided that the percent of heterozygous alleles is not consistent with what's expected from a human genome.

    Do you also include the no-calls when converting from Ancestry to 23&Me? It might be reading no-calls a certain way that's tripping the security feature.

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     johnny wilson (11-19-2019)

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    Quote Originally Posted by KDGen View Post
    This is a new security feature GEDmatch has implemented to prevent database attacks using artificially created files that could reveal the base pair information about any user in the database. It means that GEDmatch looked at your file and decided that the percent of heterozygous alleles is not consistent with what's expected from a human genome.

    Do you also include the no-calls when converting from Ancestry to 23&Me? It might be reading no-calls a certain way that's tripping the security feature.
    Yes I include the no-calls, because I don't know how to exclude them .
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    Quote Originally Posted by johnny wilson View Post
    Where is official info about it?
    There has been no official information about this. Perhaps because it is security-related, GEDmatch is choosing not to make a public announcement. I have also noticed that GEDmatch is a small operation with just a few folks behind it. Their PR response is frequently delayed or non-existent when issues come up.

    A way to exclude no-calls depends on what program you are using to do the conversion. I don't think it would take many lines of Python code to strip them out of a text file, but I don't know of any ready-made solution.

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    Is there any way to eliminate the no-calls? This is annoying...
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    Quote Originally Posted by firemonkey View Post
    converting Ancestry data to 23andMe v5 and uploading to Gedmatch .
    Why do you need such convertion? Just upload your Ancestry data to GEDmatch, you don't need any such conversion. You will definitely not get more information by this conversion rather loose some that was in the Ancestry file....

  12. #8
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    This affects ancient DNA samples too, unfortunately.

    Oh, and excluding no calls does not help apparently.

  13. #9
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    Quote Originally Posted by Tomenable View Post
    This affects ancient DNA samples too, unfortunately.

    Oh, and excluding no calls does not help apparently.
    I noticed the same. I have been working with Ítzi and could not get his kit to Gedmatch.

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