chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 39552695 39552696 A T 18 GENIC homozygous 50199982 12 39552703 39552704 A G 20 GENIC homozygous 50199984 12 39552724 39552725 A G 22 GENIC homozygous 50199986