chr start stop reference nuc variant nuc depth genic status zygosity variant ID 8 4728153 4728154 T A 21 GENIC homozygous 138279047 8 4728154 4728155 T C 21 GENIC homozygous 138279048 8 4729552 4729553 C T 13 GENIC homozygous 138279049