chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 256288581 256288582 G C 22 GENIC homozygous 109544791 1 256288595 256288596 C G 23 GENIC homozygous 108620576 1 256288597 256288598 T C 22 GENIC homozygous 109544793