chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 252556916 252556917 T C 13 GENIC homozygous 108612237 1 252557729 252557730 C T 26 GENIC homozygous 109210162 1 252557794 252557795 A G 24 GENIC homozygous 108612241