chr start stop reference nuc variant nuc depth genic status zygosity variant ID 18 62745969 62745970 T C 60 GENIC heterozygous 46741454 18 62746381 62746382 A T 20 GENIC heterozygous 46489952 18 62746707 62746708 T C 60 GENIC heterozygous 46489954