I've encountered complex variant of FMR1. It consist of both 157 bp deletion and 7 bp insertion at the same site. What is the correct way to make its VCF notation? This is how I imagine possible notation (simplified):
|<del 5'>||C||CACGGAGT||SVTYPE=CNV;END=<del 3'>;SVLEN=-157;|
I know this variant is far too small for CNV, but just I can't put DEL or INS either. Do you have any ideas how to write it clearly?