False positive mutation in TET2
Version 2020.06.1 of GMAP has introduced a false positive mutation in TET2. This mutation was absent in earlier versions of GMAP, and has also not been found when sequencing this sample using DNA sequencing.
It appears to be caused by mapping the ends of reads to a mismatch.
Version 2020.06.01 is shown in the top of this IGV screenshot.