chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 220744913 220744914 T C 27 GENIC homozygous 108542980 1 220745358 220745359 T C 17 GENIC homozygous 108994454 1 220745576 220745577 A C 24 GENIC homozygous 108542988