Hello, I was looking at VEP annotated gnomad AF (gnomad V2, exomic, since I am analyzing exomes) and noticed that there was a class that was gnomAD AF = 0 and another set taht was gnomAD AF = NA.
Looking at these variants on gnomad, I noticed that the gnomAD AF = 0 variants had an entry in gnomAD that did indeed say the AF is zero. However for the gnomAD AF = NA variants, there is exome sequencing coverage for the area and there are even nearby variants but the page just said "variant not found"
https://gnomad.broadinstitute.org/variant/1-11769334-C-T?dataset=gnomad_r2_1 ^example of a AF = 0
https://gnomad.broadinstitute.org/variant/1-1293856-C-T?dataset=gnomad_r2_1 ^example of AF = NA
What does "variant not found" mean? whats the difference between this as AF =0.
Thanks so much ahead of time!