chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 163280316 163280317 A G 28 GENIC homozygous 74589999 1 163280347 163280348 T A 37 GENIC homozygous 74590000 1 163281395 163281396 T C 41 GENIC homozygous 74590002