chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 15748911 15748914 TTT --- 14 GENIC heterozygous 50074842 12 15748912 15748914 TT -- 14 GENIC possibly homozygous 50074844 12 15749294 15749295 T C 23 GENIC possibly homozygous 51039312