chr start stop reference nuc variant nuc depth genic status zygosity variant ID 18 17937161 17937162 A G 18 GENIC homozygous 939635014 18 17937200 17937201 A G 10 GENIC homozygous 939635015 18 17938144 17938145 A G 17 GENIC homozygous 939635016