chr start stop reference nuc variant nuc depth genic status zygosity variant ID 3 170253527 170253528 C T 18 GENIC homozygous 888990302 3 170253602 170253603 G C 16 GENIC homozygous 888990303 3 170253890 170253891 T C 8 GENIC homozygous 888990304