chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 178527037 178527038 C T 20 GENIC homozygous 974637339 1 178530738 178530739 C A 8 GENIC homozygous 974637340 1 178532044 178532045 G T 25 GENIC homozygous 974637341