chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 197813937 197813938 G A 8 GENIC homozygous 110199843 2 197813945 197813946 A G 4 GENIC homozygous 110199844 2 197814035 197814036 G C 28 GENIC homozygous 120172513