chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 6127456 6127457 A G 16 GENIC homozygous 63574944 20 6127889 6127890 T C 6 GENIC homozygous 63345525 20 6128655 6128656 A G 8 GENIC homozygous 63345537