chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 21852385 21852386 T C 20 GENIC homozygous 108695480 1 21854337 21854338 G C 28 GENIC homozygous 109040009 1 21854360 21854361 C T 23 GENIC homozygous 109040010