chr start stop reference nuc variant nuc depth genic status zygosity variant ID 8 20177488 20177489 T C 21 GENIC possibly homozygous 403619293 8 20177488 20177489 T 21 GENIC heterozygous 403619294 8 20231226 20231227 C A 2 GENIC homozygous 141017486