chr start stop reference nuc variant nuc depth genic status zygosity variant ID 19 18748728 18748729 G A 25 GENIC homozygous 140418515 19 18768794 18768795 A C 54 GENIC homozygous 140418516 19 18787660 18787661 T A 19 GENIC homozygous 140418517