chr start stop reference nuc variant nuc depth genic status zygosity variant ID 10 18917086 18917087 T C 50 GENIC homozygous 116504436 10 18918828 18918829 C T 54 GENIC homozygous 116504438 10 18922301 18922302 T C 56 GENIC homozygous 116504440