chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 203675154 203675155 C A 30 GENIC homozygous 74284592 2 203675161 203675162 C A 30 GENIC homozygous 74284595 2 203696692 203696693 T C 3 GENIC homozygous 74284616