chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 17917471 17917472 T A 18 GENIC homozygous 126004243 4 17919310 17919311 T C 9 GENIC homozygous 113252539 4 17920333 17920334 T G 5 GENIC homozygous 112530539