chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 219216663 219216664 T C 10 GENIC homozygous 108540435 1 219216664 219216665 T C 10 GENIC homozygous 108540437 1 219218091 219218092 T C 19 GENIC homozygous 108540441