chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 274656146 274656147 T A 4 GENIC homozygous 810801633 1 274656149 274656150 T A 4 GENIC homozygous 810801634 1 274659005 274659006 C A 33 GENIC homozygous 810801635