chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 189828177 189828178 T G 21 GENIC homozygous 987387838 2 189832570 189832571 A C 20 GENIC homozygous 987387839 2 189833916 189833917 A C 8 GENIC homozygous 987387840