chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 20291981 20291982 A G 25 GENIC homozygous 991719006 12 20292702 20292703 A G 17 GENIC homozygous 991719007 12 20293104 20293105 G A 28 GENIC homozygous 991719008