chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 220744913 220744914 T C 17 GENIC homozygous 108542980 1 220744950 220744951 A T 19 GENIC homozygous 109367980 1 220745576 220745577 A C 19 GENIC homozygous 108542988