chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 19172519 19172520 G C 45 GENIC possibly homozygous 930040808 12 19172520 19172521 G T 46 GENIC possibly homozygous 930040809 12 19172521 19172522 G T 46 GENIC possibly homozygous 930040810