Table 13.

"Undetected" gene mutation sites in preoperative feces

Gene	Location	Amino acid mutation	Mutation start position	Mutation end position	Number of cases	Undetected sites/total mutation sites
TP53	Exon 4	A84G	7579436	7579436	1
	Exon 5	S166P	7578434	7578434	1
	Exon 7	N247D	7577542	7577542	3
	Exon 8	L289P	7577072	7577072	1	6/27
CDKN2A	Exon 2	V51A	21971206	21971206	2
		L63P	21971170	21971170	1	3/4
HRAS	Exon 2	G12R	534289	534289	1	1/10
EGFR	Exon 20	I821T	55249164	55249164	1	1/2
IDH1	Exon 4	R119Q	209113151	209113151	1	1/2
PDGFRA	Exon 13	G594fs	55141059	55141059	1	1/8

fs: Frameshift mutation.