chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 227000218 227000219 A G 14 GENIC homozygous 60083459 2 227000271 227000272 A - 12 GENIC homozygous 60083460 2 227000341 227000342 G A 13 GENIC homozygous 60083461