Annotate if a variant is private to a family.
Private=Family_ID is added to a variant's INFO field, if the variant is only found in one family.
A TFAM file (see PLINK's documentation) specifies a mapping from sample IDs to family IDs.
$ java -jar SnpSift.jar private pheotypes.tfam imp.ann.vcf > imp.ann.private.vcf
An annotated variant may look like this:
1 1005806 rs3934834 C T . PASS AF=0.091;..;Private=Family_47
This indicates that the variant is only found in members of
Family_47, according to the definitions in