chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 220744913 220744914 T C 44 GENIC homozygous 108542980 1 220745124 220745125 G C 28 GENIC homozygous 108542982 1 220745167 220745168 T A 28 GENIC homozygous 108542984 1 220745576 220745577 A C 28 GENIC homozygous 108542988