chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 20507458 20507459 T C 7 GENIC homozygous 51062025 12 20507794 20507795 G C 20 GENIC homozygous 51062027 12 20508895 20508896 A - 14 GENIC homozygous 50105468