chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 7450147 7450148 G A 21 GENIC homozygous 981883473 4 7450490 7450491 T G 8 GENIC homozygous 981883474 4 7451468 7451469 A C 16 GENIC homozygous 981883475