chr start stop reference nuc variant nuc depth genic status zygosity variant ID 18 17937161 17937162 A G 13 GENIC homozygous 995466888 18 17937200 17937201 A G 12 GENIC homozygous 995466889 18 17938144 17938145 A G 25 GENIC homozygous 995466890