Strange AD Value due to Select Variants
I've used the Unified Genotyper for variant calling with GATK version 2.5.2. This was the info for a private variant.
However, after select variants to exclude non variant and variants not passing Filter, the AD changed and eliminated the alternative reads though the DP remained unchanged.
I think I recall another post having a similar issue due to multithreaded use of select variants
APologies for not commenting on this post instead as I had already posted this prior to seeing the other post!