Force build conversion?
Hello!
I have received a 23andme formatted file that is in GRCh38 but detects as GRCh37. Is there any way to force the conversion or possibly use more positions to detect the build?
Thanks!
Hello and thanks for the issue! Yes, if you could provide an RSID or two from the file, the detection could add those.
The root cause was that the file was created from a GRCh38 CRAM with WGSExtract and the 23andme header still has mentions of build 37.
Hmm, maybe there could be an option to detect the build using only RSID positions, instead of using them only when the build isn’t in the header.
I think WGSExtract needs to be fixed to create a compatible header depending on the build.
In terms of snps, build detection could be made more robust to just use the data (RSID positions) first, and then fall back to the headers.
To be honest that would be the best solution.