chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 4852841 4852842 G T 15 GENIC homozygous 948658501 20 4853626 4853627 A G 17 GENIC homozygous 948658502 20 4853634 4853635 A C 20 GENIC homozygous 948658503