chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 7450147 7450148 G A 42 GENIC homozygous 928771734 4 7450490 7450491 T G 40 GENIC homozygous 928771735 4 7451468 7451469 A C 44 GENIC homozygous 928771736