chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 223865521 223865522 C A 26 GENIC homozygous 59412274 2 223865541 223865542 A G 21 GENIC homozygous 62337877 2 223865853 223865854 G C 30 GENIC homozygous 59412275