chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 18532826 18532827 G C 18 GENIC homozygous 878030949 12 18533428 18533429 T G 5 GENIC heterozygous 878030950 12 18533430 18533431 T G 6 GENIC heterozygous 878030951