chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 178527037 178527038 C T 18 GENIC homozygous 962966043 1 178530738 178530739 C A 20 GENIC homozygous 962966044 1 178532044 178532045 G T 28 GENIC homozygous 962966045