chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 189828177 189828178 T G 12 GENIC homozygous 981573970 2 189832570 189832571 A C 18 GENIC homozygous 981573971 2 189833916 189833917 A C 7 GENIC homozygous 981573972