GATK version 18.104.22.168
HaplotypeCaller and a couple of other programs (e.g. GenotypeGVCFs) have the option --dbsnp but I can not find any explanation what it does in the tool documentation. My guess is, that it annotates known variants with its variant ID in the ID field of the vcf file. So my question is: Is this assumption correct, and where is this documented?
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