chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 220321198 220321199 G C 31 GENIC homozygous 664593000 1 220321200 220321201 C T 30 GENIC homozygous 664593001 1 220321405 220321406 C A 26 GENIC homozygous 664593002