chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 19172517 19172518 G A 15 GENIC homozygous 991718587 12 19172519 19172520 G C 15 GENIC homozygous 991718588 12 19172520 19172521 G T 15 GENIC homozygous 991718589 12 19172521 19172522 G T 15 GENIC homozygous 991718590