chr start stop reference nuc variant nuc depth genic status zygosity variant ID 15 55470017 55470018 G T 21 GENIC heterozygous 983486477 15 55471500 55471501 A G 12 GENIC homozygous 983486478 15 55471501 55471502 C T 12 GENIC homozygous 983486479