chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 3748078 3748079 G C 5 GENIC homozygous 109069674 20 3749548 3749549 A G 2 GENIC homozygous 109069680 20 3750322 3750323 A C 7 GENIC homozygous 109069682