chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 257463039 257463040 T G 28 GENIC homozygous 111196830 2 257464195 257464196 C T 30 GENIC homozygous 111196832 2 257464376 257464377 T C 29 GENIC homozygous 111196834