chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 19172519 19172520 G C 2 GENIC homozygous 1001332578 12 19172520 19172521 G T 2 GENIC homozygous 1001332579 12 19172521 19172522 G T 2 GENIC homozygous 1001332580