chr start stop reference nuc variant nuc depth genic status zygosity variant ID 15 31484313 31484314 A G 2 GENIC homozygous 676516748 15 31484316 31484317 G A 2 GENIC homozygous 676516749 15 31484321 31484322 G A 3 GENIC homozygous 676516750