chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 18522998 18522999 G A 16 GENIC homozygous 115276900 12 18525801 18525802 C T 5 GENIC homozygous 115276906 12 18526764 18526765 T C 24 GENIC homozygous 115276908