chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 174743082 174743083 A T 23 GENIC homozygous 74907728 2 174744958 174744959 C G 27 GENIC homozygous 74907729 2 174745505 174745506 C T 26 GENIC homozygous 74132731 2 174745621 174745622 G C 20 GENIC homozygous 74132733