chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 230277441 230277442 A C 4 GENIC homozygous 75892250 2 230277449 230277450 A T 3 GENIC homozygous 75892251 2 230277465 230277466 G T 3 GENIC homozygous 75892252