chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 20294026 20294027 A G 6 GENIC homozygous 881089442 12 20295873 20295874 T C 4 GENIC homozygous 881089443 12 20295891 20295892 C T 4 GENIC homozygous 881089444