chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 199354980 199354981 A G 19 GENIC homozygous 108500253 1 199355228 199355229 C T 22 GENIC homozygous 108500255 1 199355245 199355246 G C 18 GENIC homozygous 108500257