chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 252808371 252808372 G C 52 GENIC homozygous 108612662 1 252809699 252809700 T C 40 GENIC homozygous 109210926 1 252810366 252810367 G C 50 GENIC homozygous 109210928