chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 136597825 136597826 G A 28 GENIC homozygous 56941302 4 136598200 136598201 A C 23 GENIC homozygous 56941303 4 136598448 136598449 A G 23 GENIC homozygous 56941304