chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 47899333 47899334 G C 20 GENIC homozygous 109212470 20 47899334 47899335 A T 20 GENIC homozygous 109212472 20 47903607 47903608 T G 20 GENIC homozygous 109212476 20 47903608 47903609 G T 20 GENIC homozygous 109212478