chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 6652125 6652126 G GC 2 GENIC homozygous 45399898 20 6654922 6654925 AAA --- 18 GENIC heterozygous 45621372 20 6654923 6654925 AA -- 18 GENIC possibly homozygous 45399902