Allele frequency filter - keep missings

Hi,

when I filter my mt for AF like this:

mtf=mt.filter_rows(mt.info.gnomAD_NFE_AF < 0.01))

it would not include variants with missing annotation in gnomad.
How can I keep these variants ?

Thanks, John

mtf=mt.filter_rows(hl.is_missing(mt.info.gnomadAD_NFE_AF) | mt.info.gnomAD_NFE_AF < 0.01))

That was easy :wink:
Thanks !