chr start stop reference nuc variant nuc depth genic status zygosity variant ID 18 28176180 28176181 G T 20 GENIC homozygous 63845691 18 28188603 28188604 T C 42 GENIC heterozygous 63845694 18 28196655 28196656 G A 58 GENIC heterozygous 64021948