Counts and frequency of alleles in called genotypes (AC, AF, AN)
This annotation outputs the following:
This set of annotations, relating to a heterozygous call(0/1) means there is 1 alternate allele in the genotype. The corresponding allele frequency is 0.5 because there is 1 alternate allele and 1 reference allele in the genotype. The total number of alleles in the genotype should be equivalent to the ploidy of the sample.
GATK version 188.8.131.52 built at Wed, 30 Jan 2019 10:21:04 +0530.