chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 180160658 180160659 C T 34 GENIC homozygous 57020245 4 180160692 180160693 A G 27 GENIC homozygous 57020246 4 180160810 180160811 C CT 20 GENIC possibly homozygous 57020247