chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 220321198 220321199 G C 5 GENIC homozygous 563085621 1 220321200 220321201 C T 5 GENIC homozygous 563085622 1 220321405 220321406 C A 10 GENIC possibly homozygous 563085623