chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 52450846 52450847 C T 16 GENIC homozygous 56893881 4 52451170 52451171 A G 17 GENIC homozygous 56893883 4 52451229 52451230 G C 22 GENIC homozygous 56893885