chr start stop reference nuc variant nuc depth genic status zygosity variant ID 15 23245355 23245356 G GA 2 GENIC homozygous 49040392 15 23245362 23245365 GCA --- 1 GENIC homozygous 49040394 15 23245366 23245367 T TTC 1 GENIC homozygous 49083136