I noticed that get_vcf_metadata doesn’t appear to be pulling the descriptions of FILTER lines. For example, I ran:
metadata = hl.get_vcf_metadata(
'gs://gnomad-public/release/2.1.1/liftover_grch38/vcf/exomes/gnomad.exomes.r2.1.1.sites.liftover_grch38.vcf.bgz')
The VCF has the following descriptions in the header:
##FILTER=<ID=AC0,Description="Allele count is zero after filtering out low-confidence genotypes (GQ < 20; DP < 10; and AB < 0.2 for het calls)">
##FILTER=<ID=InbreedingCoeff,Description="InbreedingCoeff < -0.3">
##FILTER=<ID=PASS,Description="Passed all variant filters">
##FILTER=<ID=RF,Description="Failed random forest filtering thresholds of 0.055272738028512555, 0.20641025579497013 (probabilities of being a true positive variant) for SNPs, indels">
but the descriptions from get_vcf_metadata are empty:
{'AC0': {'Description': ''},
'InbreedingCoeff': {'Description': ''},
'PASS': {'Description': ''},
'RF': {'Description': ''}}