chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 18845903 18845904 T C 9 GENIC heterozygous 109124882 20 18845906 18845907 T G 8 GENIC homozygous 109124884 20 18923337 18923338 A T 4 GENIC homozygous 125196655 20 18926833 18926834 G T 4 GENIC homozygous 109394935