chr start stop reference nuc variant nuc depth genic status zygosity variant ID 16 19939656 19939657 A G 37 GENIC homozygous 973965959 16 19939766 19939767 T C 33 GENIC homozygous 973965960 16 19941190 19941191 T G 4 GENIC homozygous 973965961