chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 20621272 20621273 C T 23 GENIC homozygous 50105582 12 20622023 20622024 C - 24 GENIC heterozygous 50105584 12 20622026 20622027 C CT 28 GENIC possibly homozygous 50507607